Ecological Informatics最新文献

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Camouflage detection: Optimization-based computer vision for Alligator sinensis with low detectability in complex wild environments 伪装检测:基于优化的计算机视觉技术,用于在复杂野外环境中可探测性低的扬子鳄
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-28 DOI: 10.1016/j.ecoinf.2024.102802
Yantong Liu , Sai Che , Liwei Ai , Chuanxiang Song , Zheyu Zhang , Yongkang Zhou , Xiao Yang , Chen Xian
{"title":"Camouflage detection: Optimization-based computer vision for Alligator sinensis with low detectability in complex wild environments","authors":"Yantong Liu ,&nbsp;Sai Che ,&nbsp;Liwei Ai ,&nbsp;Chuanxiang Song ,&nbsp;Zheyu Zhang ,&nbsp;Yongkang Zhou ,&nbsp;Xiao Yang ,&nbsp;Chen Xian","doi":"10.1016/j.ecoinf.2024.102802","DOIUrl":"10.1016/j.ecoinf.2024.102802","url":null,"abstract":"<div><p><em>Alligator sinensis</em> is an extremely rare species that possesses excellent camouflage, allowing it to fit perfectly into its natural environment. The use of camouflage makes detection difficult for both humans and automated systems, highlighting the importance of modern technologies for animal monitoring. To address this issue, we present YOLO v8-SIM, an innovative detection technique specifically developed to significantly enhance the identification precision. YOLO v8-SIM utilizes a sophisticated dual-layer attention mechanism, an optimized loss function called inner intersection-over-union (IoU), and a technique called slim-neck cross-layer hopping. The results of our study demonstrate that the model achieves an accuracy rate of 91 %, a recall rate of 89.9 %, and a mean average precision (mAP) of 92.3 % and an IoU threshold of 0.5. In addition, the model operates at a frame rate of 72.21 frames per second (FPS) and excels at accurately recognizing objects that are partially visible or smaller in size. To further improve our initiatives, we suggest creating an open-source collection of data that showcases <em>A. sinensis</em> in its native environment while using camouflage techniques. These developments collectively enhance the ability to detect disguised animals, thereby promoting the monitoring and protection of biodiversity, and supporting ecosystem sustainability.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102802"},"PeriodicalIF":5.8,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003443/pdfft?md5=b051ad19e91be804a592cc7522e3fc43&pid=1-s2.0-S1574954124003443-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142128809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Declining planetary health as a driver of camera-trap studies: Insights from the web of science database 地球健康状况恶化是相机捕捉研究的驱动力:科学网数据库的启示
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-28 DOI: 10.1016/j.ecoinf.2024.102801
Thakur Dhakal , Tae-Su Kim , Seong-Hyeon Kim , Shraddha Tiwari , Seung-Hyun Woo , Do-Hun Lee , Gab-Sue Jang
{"title":"Declining planetary health as a driver of camera-trap studies: Insights from the web of science database","authors":"Thakur Dhakal ,&nbsp;Tae-Su Kim ,&nbsp;Seong-Hyeon Kim ,&nbsp;Shraddha Tiwari ,&nbsp;Seung-Hyun Woo ,&nbsp;Do-Hun Lee ,&nbsp;Gab-Sue Jang","doi":"10.1016/j.ecoinf.2024.102801","DOIUrl":"10.1016/j.ecoinf.2024.102801","url":null,"abstract":"<div><p>Planetary health is crucial to human well-being, ecosystem sustainability, and biodiversity preservation. In this context, camera traps are an effective remote sensing tool for monitoring biodiversity. Given the rising importance of understanding biodiversity patterns and trends, this study examines possible factors influencing camera-trap studies and provides bibliometric insights from 2377 publications indexed in the Web of Science (WoS). To explore the potential drivers of camera-trap research growth, we used a logistic model based on specific variables, including global gross domestic product, temperature growth, a planetary health measure the declining living planet index, and human population growth. The living planet index was identified as a statistically significant driver of camera-trap research growth (<em>p</em>-value &lt;0.01), suggesting that curiosity regarding other living beings influences studies. Through the bibliometric analysis, we observed that camera-trap studies are predominantly conducted in the United States, followed by England and Australia, with a notable upward trend over recent years. These studies align with sustainable development goal 15 (Life on Land) and are primarily classified under the ecology category in WoS. Further, we have visualized the network of co-occurrence of authors and authors' affilation regions, keywords, and keywords plus documents. Overall, this study assesses ecological and conservation informatics and provides a reference to scholars, policymakers, and decision-makers.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102801"},"PeriodicalIF":5.8,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003431/pdfft?md5=1b75bbdb65094dbf6e4d475c596af5e8&pid=1-s2.0-S1574954124003431-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A joint time and spatial attention-based transformer approach for recognizing the behaviors of wild giant pandas 识别野生大熊猫行为的基于时间和空间注意力的联合变换器方法
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-26 DOI: 10.1016/j.ecoinf.2024.102797
Jing Liu , Jin Hou , Dan Liu , Qijun Zhao , Rui Chen , Xiaoyuan Chen , Vanessa Hull , Jindong Zhang , Jifeng Ning
{"title":"A joint time and spatial attention-based transformer approach for recognizing the behaviors of wild giant pandas","authors":"Jing Liu ,&nbsp;Jin Hou ,&nbsp;Dan Liu ,&nbsp;Qijun Zhao ,&nbsp;Rui Chen ,&nbsp;Xiaoyuan Chen ,&nbsp;Vanessa Hull ,&nbsp;Jindong Zhang ,&nbsp;Jifeng Ning","doi":"10.1016/j.ecoinf.2024.102797","DOIUrl":"10.1016/j.ecoinf.2024.102797","url":null,"abstract":"<div><p>Wild giant pandas, an endangered species exclusive to China, are a focus of conservation efforts. The behavior of giant pandas reflects their health conditions and activity capabilities, which play an important role in formulating and implementing conservation measures. Researching and developing efficient behavior recognition methods based on deep learning can significantly advance the study of wild giant panda behavior. This study introduces, for the first time, a transformer-based behavior recognition method termed PandaFormer, which employs time-spatial attention to analyze behavioral temporal patterns and estimate activity spaces. The method integrates advanced techniques such as cross-fusion recurrent time encoding and transformer modules, which handle both temporal dynamics and spatial relationships within panda behavior videos. First, we design cross-fusion recurrent time encoding to represent the occurrence time of behaviors effectively. By leveraging the multimodal processing capability of the transformer, we input time and video tokens into the transformer module to explore the relation between behavior and occurrence time. Second, we introduce relative temporal weights between video frames to enable the model to learn sequential relationships. Finally, considering the fixed position of the camera during recording, we propose a spatial attention mechanism based on the estimation of the panda's activity area. To validate the effectiveness of the model, a video dataset of wild giant pandas, encompassing five typical behaviors, was constructed. The proposed method is evaluated on this video-level annotated dataset. It achieves a Top-1 accuracy of 92.25 % and a mean class precision of 91.19 %, surpassing state-of-the-art behavior recognition algorithms by a large margin. Furthermore, the ablation experiments validate the effectiveness of the proposed temporal and spatial attention mechanisms. In conclusion, the proposed method offers an effective way of studying panda behavior and holds potential for application to other wildlife species.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102797"},"PeriodicalIF":5.8,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S157495412400339X/pdfft?md5=789f7bb46c25667b7b6903e3a1edf5d4&pid=1-s2.0-S157495412400339X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aboveground biomass inversion of forestland in a Jinsha River dry-hot valley by integrating high and medium spatial resolution optical images: A case study on Yuanmou County of Southwest China 通过整合中高分辨率光学图像反演金沙江干热河谷林地地上生物量:中国西南元谋县案例研究
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-25 DOI: 10.1016/j.ecoinf.2024.102796
Zihao Liu , Tianbao Huang , Yong Wu , Xiaoli Zhang , Chunxiao Liu , Zhibo Yu , Can Xu , Guanglong Ou
{"title":"Aboveground biomass inversion of forestland in a Jinsha River dry-hot valley by integrating high and medium spatial resolution optical images: A case study on Yuanmou County of Southwest China","authors":"Zihao Liu ,&nbsp;Tianbao Huang ,&nbsp;Yong Wu ,&nbsp;Xiaoli Zhang ,&nbsp;Chunxiao Liu ,&nbsp;Zhibo Yu ,&nbsp;Can Xu ,&nbsp;Guanglong Ou","doi":"10.1016/j.ecoinf.2024.102796","DOIUrl":"10.1016/j.ecoinf.2024.102796","url":null,"abstract":"<div><p>It is crucial to develop a comprehensive method for estimating the aboveground biomass (AGB) of trees, shrubs, grasslands, and sparse tree areas in ecologically fragile dry, hot valley regions with vertical zonation. Multi-source remote-sensing data can fulfill this requirement, providing help in monitoring the health of ecosystems and providing a basis for regional biodiversity conservation and restoration. Sentinel-2A satellite imagery was used to classify the forests, shrubs, and grasslands in Yuanmou County, Chuxiong Yi Autonomous Prefecture, Yunnan Province, China. The Gaofen-2 satellite (GF-2) was used to extract the canopy width and calculate tree biomass in the valley-type savanna region. These data were combined with remote-sensing factors and measured survey data, and random forest (RF) and extreme gradient boosting (XGBoost) models were used to estimate the biomass. Using GF-2 images to segment sparse tree areas effectively reduced the overestimation of low-resolution remote-sensing images, enabling the AGB of sparse trees to be accurately estimated. The biomass estimations based on the Sentinel-2A images attained coefficient of determination (<em>R</em><sup>2</sup>) values of 0.45 and 0.47 for the forest, 0.55 and 0.61 for the shrubs, and 0.32 and 0.37 for the grasslands using RF and XGBoost models, respectively, demonstrating variable effectiveness across vegetation types. In addition, the XGBoost model was more robust than the RF model for all three vegetation types. Our methodology provides scientific support for the sustainable development of ecologically fragile dry, hot valleys and savanna areas.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102796"},"PeriodicalIF":5.8,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003388/pdfft?md5=f506a70c66cbd6e3955a7dc2b7fe8e55&pid=1-s2.0-S1574954124003388-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The impact of land-use change on the ecological environment quality from the perspective of production-living-ecological space: A case study of the northern slope of Tianshan Mountains 从生产-生活-生态空间角度看土地利用变化对生态环境质量的影响:天山北坡案例研究
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-25 DOI: 10.1016/j.ecoinf.2024.102795
Yu Cao , Mingyu Zhang , Zhengyong Zhang , Lin Liu , Yu Gao , Xueying Zhang , Hongjin Chen , Ziwei Kang , Xinyi Liu , Yu Zhang
{"title":"The impact of land-use change on the ecological environment quality from the perspective of production-living-ecological space: A case study of the northern slope of Tianshan Mountains","authors":"Yu Cao ,&nbsp;Mingyu Zhang ,&nbsp;Zhengyong Zhang ,&nbsp;Lin Liu ,&nbsp;Yu Gao ,&nbsp;Xueying Zhang ,&nbsp;Hongjin Chen ,&nbsp;Ziwei Kang ,&nbsp;Xinyi Liu ,&nbsp;Yu Zhang","doi":"10.1016/j.ecoinf.2024.102795","DOIUrl":"10.1016/j.ecoinf.2024.102795","url":null,"abstract":"<div><p>Elucidating the relationships between production-living-ecological space (PLES) and ecological environments can help identify new strategies to promote sustainable development. The northern slope of the Tianshan Mountains represents a typical complex ecosystem characterized by mountain-oasis-desert interactions in arid regions with prominent human-land conflicts and intricate ecological environments. Here, we analyzed the spatiotemporal variations in land use in the study area from the perspective of PLES. Based on moderate resolution imaging spectroradiometer (MODIS) data, an improved remote sensing ecological index (IRSEI) suitable for arid areas was established to evaluate the eco-environment quality (EEQ) by introducing salinity and cleanliness indexes. A stepwise regression model was then used to identify and quantify the impact of the PLES transfer modes on EEQ. The results showed that: (1) The oasis area was dominated by agricultural production land, whereas the desert and alpine areas were dominated by other and pasture ecological lands, respectively. The oasis area primarily involved the conversion of pasture ecological land to agricultural production land, whereas the desert and alpine areas showed mutual transformation of ecological space. (2) The size relationship of the EEQ in each sub-region was alpine region (0.555) &gt; oasis region (0.509) &gt; desert region (0.424). The EEQ in the study area showed an overall upward trend but decreased in the alpine region. (3) Changes in the PLES and IRSEI primarily occurred in the oasis region. Among the 21 PLES transfer modes that affect EEQ, an increase in agricultural production land was the primary mode that enhanced IRSEI, whereas an increase in impervious surfaces significantly decreased IRSEI. The degree of influence was as follows: industrial and mining production (−0.594) &gt; urban living (−0.462) &gt; rural living land (−0.316). In addition, EEQ is also affected by the combined effects of climate, topography, and other factors. By proposing IRSEI, we highlight the impact of land-use transfer mode on ecological environment quality from the perspective of PLES, which can provide a reference for ecological environment evaluation in arid areas and is of great significance for land-use planning and ecological environment protection.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102795"},"PeriodicalIF":5.8,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003376/pdfft?md5=cf36b8be4c19dbed11c0acd1bf9d669a&pid=1-s2.0-S1574954124003376-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142086853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hyperspectral metal concentration inversion method using attention mechanism and graph neural network 利用注意力机制和图神经网络的高光谱金属浓度反演方法
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-24 DOI: 10.1016/j.ecoinf.2024.102792
Lei Zhang
{"title":"A hyperspectral metal concentration inversion method using attention mechanism and graph neural network","authors":"Lei Zhang","doi":"10.1016/j.ecoinf.2024.102792","DOIUrl":"10.1016/j.ecoinf.2024.102792","url":null,"abstract":"<div><p>Soil heavy metal contamination has emerged as a global environmental concern, posing significant risks to human health and ecosystem integrity. Hyperspectral technology, with its non-invasive, non-destructive, large-scale, and high spectral resolution capabilities, shows promising applications in monitoring soil heavy metal pollution. Traditional monitoring methods are often time-consuming, labor-intensive, and expensive, limiting their effectiveness for rapid, large-scale assessments. This study introduces a novel deep learning method, SpecMet, for estimating heavy metal concentrations in naturally contaminated agricultural soils using hyperspectral data. The SpecMet model extracts features from hyperspectral data using convolutional neural networks (CNNs) and achieves end-to-end prediction of soil heavy metal concentrations by integrating attention mechanisms and graph neural networks. Results demonstrate that the OR-SpecMet model, which utilizes raw spectral data, achieves optimal prediction performance, significantly surpassing traditional machine learning methods such as multiple linear regression, partial least squares regression, and support vector machine regression in estimating concentrations of lead (Pb), copper (Cu), cadmium (Cd), and mercury (Hg). Moreover, training specialized OR-SpecMet models for individual heavy metals better accommodates their unique spectral-concentration relationships, enhancing overall estimation accuracy while achieving a 20.3 % improvement in predicting low-concentration mercury. The OR-SpecMet method showcases the superior performance and extensive application potential of deep learning techniques in precise soil heavy metal pollution monitoring, offering new insights and reliable technical support for soil pollution prevention and agricultural ecosystem protection. The code and datasets used in this study are publicly available at: <span><span>https://github.com/zhang2lei/metal.git</span><svg><path></path></svg></span>.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102792"},"PeriodicalIF":5.8,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003340/pdfft?md5=408d86a5a8c2f813bf658873fbbc0a9d&pid=1-s2.0-S1574954124003340-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lightweight and accurate aphid detection model based on an improved deep-learning network 基于改进型深度学习网络的轻量级精确蚜虫检测模型
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-24 DOI: 10.1016/j.ecoinf.2024.102794
Weihai Sun , Yane Li , Hailin Feng , Xiang Weng , Yaoping Ruan , Kai Fang , Leijun Huang
{"title":"Lightweight and accurate aphid detection model based on an improved deep-learning network","authors":"Weihai Sun ,&nbsp;Yane Li ,&nbsp;Hailin Feng ,&nbsp;Xiang Weng ,&nbsp;Yaoping Ruan ,&nbsp;Kai Fang ,&nbsp;Leijun Huang","doi":"10.1016/j.ecoinf.2024.102794","DOIUrl":"10.1016/j.ecoinf.2024.102794","url":null,"abstract":"<div><p>Rapid and accurate detection of bamboo aphids can help prevent large-scale aphid infestations from occurring, which is of great significance for increasing bamboo shoot production and economic benefits. Herein, a lightweight and accurate model, SCA-YOLOv5s, was established by integrating ShuffleNetv2 and Coordinate Attention with the YOLOv5s model to detect <em>Takecallis taiwanus</em> on the yellow sticky traps. Specifically, we first replaced the backbone network of YOLOv5s with ShuffleNetv2 to reduce the number of parameters and computational complexity of the model. Second, an anchor optimization method was proposed by combining linear scaling and <em>k</em>-means algorithm to generate appropriate anchor boxes for detecting small-sized alate aphids. Third, the coordinate attention mechanism was added to the neck network to improve the feature extraction ability. To verify the performance of the proposed SCA-YOLOv5s model, eight detection models were constructed with existing deep learning methods, including SSD300, YOLOv3, Faster R-CNN, YOLOv4, YOLOv4-Tiny, YOLOX-Tiny, YOLOv7-Tiny, and YOLOv5s. Results reveal that the SCA-YOLOv5s model achieved higher detection accuracy than the other eight models. Its mean average precision reached 92.2 %. The proposed model has a size of only 6.7 MB, its floating-point operations (FLOPs) is 7.4 × 10<sup>9</sup>, its inference time is 6.6 ms, and compared with YOLOv5s, it is 53.47 % smaller in model size, 55.15 % lower in FLOPs, and 0.8 ms faster in inference time. The results indicate that the proposed model can maintain high detection accuracy while minimizing computation and inference time, which is crucial for deployment in remote areas with low information technology. This study provides valuable technical support for the control of aphids in bamboo forests.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102794"},"PeriodicalIF":5.8,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003364/pdfft?md5=7405cde5930c97d6d4719ddf73d64b30&pid=1-s2.0-S1574954124003364-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Attributing spatially stratified heterogeneity in biodiversity of urban–rural interlaced zones based on the OPGD model 基于 OPGD 模型的城乡交错带生物多样性空间分层异质性归因
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-23 DOI: 10.1016/j.ecoinf.2024.102789
Di Wang , Lang Zhang , Haoran Yu , Qicheng Zhong , Guilian Zhang , Xuanying Chen , Qingping Zhang
{"title":"Attributing spatially stratified heterogeneity in biodiversity of urban–rural interlaced zones based on the OPGD model","authors":"Di Wang ,&nbsp;Lang Zhang ,&nbsp;Haoran Yu ,&nbsp;Qicheng Zhong ,&nbsp;Guilian Zhang ,&nbsp;Xuanying Chen ,&nbsp;Qingping Zhang","doi":"10.1016/j.ecoinf.2024.102789","DOIUrl":"10.1016/j.ecoinf.2024.102789","url":null,"abstract":"<div><p>Urban–rural interlaced zones are characterized by the interpenetration of urban and rural elements, drastic changes in construction, relatively weak planning and management, and anthropogenic activities that constantly impact the ecological background. However, the ecological barriers and hinterland spaces of the city center provide important ecological functions. In this study, we selected forest birds as indicator species of the urban ecological environment and explored the spatial stratification and heterogeneity effects of environmental substrates and anthropogenic activities on bird diversity (species richness, abundance, Shannon–Wiener index, and Simpson index) in urban–rural interlaced zones using the optimal parameter geographic detector model to characterize the changes in ecological functions in these zones. The results of this study are as follows:</p><p>(1) The bird diversity index in Minhang District, Shanghai, showed an obvious urban-rural gradient divergence with the transition of urban zone- rural-urban interface - rural zone.</p><p>An agglomerative spatial differentiation pattern was observed more in the southeast but less in the northwest, with a high degree of spatial distribution concentrations and evident imbalance characteristics.</p><p>(2) The spatially stratified heterogeneity in bird diversity in urban–rural interlaced zones was because of the combined action of multiple driving factors under the three dimensions of habitat environment, degree of urbanization, and anthropogenic interference. Most of the interactions between any two factors showed non-linear or bifactorial enhancement effects. Furthermore, the one-factor explanatory power of urbanization and anthropogenic interference factors on bird diversity was significantly higher than that of the habitat environment factor.</p><p>(3) Population heat distribution (PD), distance to the center of Shanghai (DC), and nighttime lighting index(NTL) were the main drivers of spatially stratified heterogeneity in bird diversity and the key indicators of urban–rural gradient changes. The interaction between PD and DC had the strongest explanatory power for the spatial differentiation of bird diversity.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102789"},"PeriodicalIF":5.8,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003315/pdfft?md5=aa2a3267933efe8c74a138e4c8987bd5&pid=1-s2.0-S1574954124003315-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
YOLO-SAG: An improved wildlife object detection algorithm based on YOLOv8n YOLO-SAG:基于 YOLOv8n 的改进型野生动物物体检测算法
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-22 DOI: 10.1016/j.ecoinf.2024.102791
Lingli Chen , Gang Li , Shunkai Zhang , Wenjie Mao , Mei Zhang
{"title":"YOLO-SAG: An improved wildlife object detection algorithm based on YOLOv8n","authors":"Lingli Chen ,&nbsp;Gang Li ,&nbsp;Shunkai Zhang ,&nbsp;Wenjie Mao ,&nbsp;Mei Zhang","doi":"10.1016/j.ecoinf.2024.102791","DOIUrl":"10.1016/j.ecoinf.2024.102791","url":null,"abstract":"<div><p>Wildlife conservation is crucial for maintaining biodiversity, ensuring ecosystem balance and stability, and fostering sustainable development. Currently, the use of infrared camera traps to monitor and capture photos of wildlife is a vital methodology in protecting and researching wildlife, and automatic detection and identification of animals within captured photographs are paramount. However, factors such as the complexity of the field environment and the varying sizes of animal targets lead to low detection accuracy, while high-precision detection models are hindered by high computational complexity and sluggish training speeds. This paper proposes a wildlife target detection algorithm based on improved YOLOv8n - YOLO-SAG, which aims to balance accuracy and speed. Training stability is enhanced by introducing the Softplus activation function, which increases detection accuracy; incorporating the AIFI enhances intra-scale feature interaction, reducing missed and false detections. Integrating the GSConv and VoV-GSCSP module lightens neck convolutions, reducing computational redundancy and balancing the computational and parametric quantities brought by the AIFI. Experimental results on a self-made wildlife dataset indicate that the YOLO-SAG achieves 94.9%, 90.9%, 96.8%, and 79.9% in Precision, Recall, [email protected], and [email protected]–0.95, respectively, which are 3.4%, 3.3%, 3.2%, and 4.9% higher than the original YOLOv8n. Inference and post-processing times reach 1.2 ms and 0.5 ms, a speedup of 25% and 54.5%, respectively, and the computation volume is only 7.2 GFLOPs, an 11.1% decrease.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102791"},"PeriodicalIF":5.8,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003339/pdfft?md5=fabe82c2fff9fc5f7d0c7fd3b9cca85a&pid=1-s2.0-S1574954124003339-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142086858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of driving effects of carbon storage change in the source of the Yellow River: A perspective with CMIP6 future development scenarios 黄河源头碳储量变化的驱动效应评估:以 CMIP6 未来发展情景为视角
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-08-22 DOI: 10.1016/j.ecoinf.2024.102790
Ming Ling , Zihao Feng , Zizhen Chen , Yanping Lan , Xinhong Li , Haotian You , Xiaowen Han , Jianjun Chen
{"title":"Evaluation of driving effects of carbon storage change in the source of the Yellow River: A perspective with CMIP6 future development scenarios","authors":"Ming Ling ,&nbsp;Zihao Feng ,&nbsp;Zizhen Chen ,&nbsp;Yanping Lan ,&nbsp;Xinhong Li ,&nbsp;Haotian You ,&nbsp;Xiaowen Han ,&nbsp;Jianjun Chen","doi":"10.1016/j.ecoinf.2024.102790","DOIUrl":"10.1016/j.ecoinf.2024.102790","url":null,"abstract":"<div><p>Understanding how future climate scenarios impact land use/cover (LUC) and carbon storage (CS) is crucial for achieving carbon neutrality. However, research often overlooks the spatiotemporal impacts of future climate and socioeconomic changes on CS. This study integrates system dynamic (SD), patch-generating land use simulation (PLUS), the integrated valuation of ecosystem services and tradeoffs (InVEST) model, and the geographical detector to assess the LUC and CS evolution in the source of the Yellow River (SYR) from 2020 to 2060. Utilizing carbon density and LUC data, we explored the influence of natural and socioeconomic factors on CS under five shared socioeconomic pathways and representative concentration pathways (SSP-RCPs) scenarios. Our findings demonstrate that: (1) Ecological land, including woodland, grassland, and wetland, expanded more under SSP126 compared to SSP245, with SSP345, SSP460, and SSP585 showing a trend of degradation tied to deeper economic contribution. (2) By 2060, CS in terrestrial ecosystem under SSP126, SSP245, SSP345, SSP460, and SSP585 were 702.33 × 10<sup>6</sup> t, 700.33 × 10<sup>6</sup> t, 697.22 × 10<sup>6</sup> t, 696.03 × 10<sup>6</sup> t, and 691.21 × 10<sup>6</sup> t, respectively. This represents changes of 3.69 × 10<sup>6</sup> t, 1.69 × 10<sup>6</sup> t, −1.49 × 10<sup>6</sup> t, −2.68 × 10<sup>6</sup> t, and −7.43 × 10<sup>6</sup> t compared to 2020. (3) Soil type predominantly influenced the spatial differentiation of CS, with significant interactions with precipitation. This research provides new insights into land redistribution, economic strategies, and achieving carbon neutrality.</p></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":"83 ","pages":"Article 102790"},"PeriodicalIF":5.8,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1574954124003327/pdfft?md5=3f165f4f1af317e0955cb37488225858&pid=1-s2.0-S1574954124003327-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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