Ecological Indicators最新文献

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Long-term variations in hydraulic residence time of floodplain lakes and their response to water conservancy projects 洪泛区湖泊水力停留时间的长期变化及其对水利工程的响应
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-15 DOI: 10.1016/j.ecolind.2024.112778
Aiping Huang , Xiaobo Liu , Fei Dong , Wenqi Peng , Bing Ma , Zhen Han , Xiaochen Yang
{"title":"Long-term variations in hydraulic residence time of floodplain lakes and their response to water conservancy projects","authors":"Aiping Huang ,&nbsp;Xiaobo Liu ,&nbsp;Fei Dong ,&nbsp;Wenqi Peng ,&nbsp;Bing Ma ,&nbsp;Zhen Han ,&nbsp;Xiaochen Yang","doi":"10.1016/j.ecolind.2024.112778","DOIUrl":"10.1016/j.ecolind.2024.112778","url":null,"abstract":"<div><div>Hydraulic residence time, a key indicator to evaluate the hydrodynamic processes of a lake, especially a floodplain lake, critically affects environmental processes such as water self-purification and algal transport. The hydraulic residence time of Poyang Lake in the east of China, a typical floodplain lake, exhibits significant and complicated variations. Focusing on Poyang Lake, this study adopted the hydraulic data from 1979–2018 to calculate the hydraulic residence time of the lake. Different methods, such as the Mann–Kendall method and hydrodynamic modeling, were used to reveal the long-term variations in the hydraulic residence time and explore the reasons for these variations. Subsequently, this study predicted the possible effects of the planned water conservancy project on the hydraulic residence time of the floodplain lake. The main results can be summarized as follows: (1) In the past 40 years, the annual average hydraulic residence time of Poyang Lake varied between 8.6 and 20.1 d, with a significant reduction noted. Furthermore, the monthly average hydraulic residence time decreased considerably, with the decline in July–September being the most significant. (2) The annual average outflow rate of Poyang Lake increased insignificantly, while the annual average lake volume decreased significantly, which were possibly the main reasons for variations in the annual average hydraulic residence time. (3) In the future, with the planned Poyang Lake water conservancy project (PLWCP), the low water level of the lake is expected to be compensated for by increasing the water level during the regulation period; thus, the hydraulic residence time of the lake would be extended. The findings of this study could deepen the understanding of the hydrodynamic characteristics of floodplain lakes and their responses to water conservancy projects; they could also provide technical foundations for water resource management and environmental protection of floodplain lakes.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112778"},"PeriodicalIF":7.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662231","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
Dispersal limitations prompt early vegetation aggregation in counter-seasonal reservoir riparian zones: A case study of Longkaikou Reservoir, China 传播限制促使反季节水库河岸带植被早期聚集:中国龙开口水库案例研究
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-15 DOI: 10.1016/j.ecolind.2024.112837
Weiwei Jiang , Wentao Jia , Henglin Xiao
{"title":"Dispersal limitations prompt early vegetation aggregation in counter-seasonal reservoir riparian zones: A case study of Longkaikou Reservoir, China","authors":"Weiwei Jiang ,&nbsp;Wentao Jia ,&nbsp;Henglin Xiao","doi":"10.1016/j.ecolind.2024.112837","DOIUrl":"10.1016/j.ecolind.2024.112837","url":null,"abstract":"<div><div>In global water management, the winter-storage, summer-drainage reservoir mechanism effectively mitigates summer floods and winter droughts. However, this counter-seasonal operation poses complex challenges to riparian ecosystems. To explore Nature-based Solutions (NbS), a deep understanding of the spatial development mechanisms of dominant species is crucial. Taking the Longkaikou Reservoir on China’s Jinsha River as an example, we employed drone photogrammetry, quadrat surveys, and null model simulations to intuitively and quantitatively analyze the spatial patterns of dominant riparian species and the underlying ecological processes. Our results showed that a 40 m × 40 m area is the minimum sampling size for determining riparian plant communities. Habitat heterogeneity and dispersal limitation jointly influence population spatial patterns, modulated by spatial scale and species biology. At smaller scales, population aggregation is driven by reproduction and dispersal, while at larger scales, habitat filtering significantly impacts population distribution, leading to random or uniform patterns. Based on these findings, we propose an innovative NbS approach for riparian zones. Using the minimum sampling area as a unit, we suggest employing remote sensing and GIS for grid-based fine management. Within grids (at the community level), enhance habitat connectivity and prioritize native pioneer species with efficient dispersal mechanisms. Between grids (at the metapopulation and ecosystem levels), implement differentiated ecological strategies based on habitat heterogeneity. Additionally, fostering cross-regional and interdisciplinary collaboration will form an integrated research and application framework, supporting riparian ecosystem conservation.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112837"},"PeriodicalIF":7.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661869","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
Radial growth and climate responses of healthy versus decayed subalpine conifer trees in the southeastern Qinghai-Tibetan Plateau 青藏高原东南部健康亚高山针叶树与衰败亚高山针叶树的径向生长和气候反应
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-15 DOI: 10.1016/j.ecolind.2024.112845
Lingzhuo Luo , Wenzhi Wang , Zhehong Wu , Yong Su
{"title":"Radial growth and climate responses of healthy versus decayed subalpine conifer trees in the southeastern Qinghai-Tibetan Plateau","authors":"Lingzhuo Luo ,&nbsp;Wenzhi Wang ,&nbsp;Zhehong Wu ,&nbsp;Yong Su","doi":"10.1016/j.ecolind.2024.112845","DOIUrl":"10.1016/j.ecolind.2024.112845","url":null,"abstract":"<div><div>The forest loss and degradation caused by tree heart rot presents an increasingly challenging issue for the protection and utilization of forest resources. Yet, it is questionable whether heartwood-decayed trees can still function on par with healthy trees. Here, using tree ring data, we established basal area increment (BAI) series of healthy and heartwood-decayed fir trees at four sites (<em>Abies spectabilis</em> in Bomi; <em>A. georgei</em> Orr in Deqin as well as the Sygera Mountain; <em>A. fabri</em> Craib in Yajiageng) in the southeastern Qinghai-Tibetan Plateau (QTP). We conducted a comparative analysis of the difference in the BAI, response to climate factors and elasticity under environmental stress between the healthy and decayed fir. The results show that, in QTP, fir susceptibility to decay is uncorrelated with growth rates. However, after decaying occurs in fir trees, their radial growth is restricted in warm and humid areas (i.e., at Bomi and Yajiageng). The average BAI of healthy fir is 70.32 % and 86.32 % higher than that of decayed fir in Bomi and Yajiageng respectively (p &lt; 0.01), but no significant difference in Deqin and Sygera (p &gt; 0.05). Moreover, healthy fir exhibits a more pronounced response to climatic conditions. Almost all BAI series of healthy and decayed fir in the southeastern QTP is positively correlated with the temperature and vapor pressure deficit. Under temperature stress, decayed fir trees are less resistant at three sites. This empirical study supports that there is no correlation between conifer trees’ radial growth rate and their likelihood of heartwood decay, and provides a compelling explanation for the constrained growth of decayed fir trees. Our findings can bolster the accurate assessment of carbon sinks and the conservation of forest resources in regions prone to high-decaying risks.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112845"},"PeriodicalIF":7.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661870","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
Region-county characteristics of spatiotemporal dynamic evolution and influencing factors on agricultural net carbon sink in Hexi region of Gansu Province 甘肃省河西地区农业净碳汇的区县时空动态演化特征及影响因素
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-15 DOI: 10.1016/j.ecolind.2024.112817
Lirong Wang , Peiji Shi , Jun Luo , Junfeng Yin , Fanyuan Cheng , Jing Shi , Ziyang Wang
{"title":"Region-county characteristics of spatiotemporal dynamic evolution and influencing factors on agricultural net carbon sink in Hexi region of Gansu Province","authors":"Lirong Wang ,&nbsp;Peiji Shi ,&nbsp;Jun Luo ,&nbsp;Junfeng Yin ,&nbsp;Fanyuan Cheng ,&nbsp;Jing Shi ,&nbsp;Ziyang Wang","doi":"10.1016/j.ecolind.2024.112817","DOIUrl":"10.1016/j.ecolind.2024.112817","url":null,"abstract":"<div><div>Reducing emissions and enhancing carbon sinks are<!--> <!-->essential for promoting regional agriculture in a green, low-carbon manner. However, most studies have overlooked spatial dependence and heterogeneity while incomprehensively exploring the influencing factors. Taking the counties in the Hexi region as<!--> <!-->our primary focus, the<!--> <!-->net carbon sequestration<!--> <!-->and its spatial–temporal dynamic evolution<!--> <!-->process from 2000 to 2020<!--> <!-->were calculated<!--> <!-->and<!--> <!-->explored, and the factors<!--> <!-->influencing<!--> <!-->and their<!--> <!-->spatial effect decomposition were investigated.We observed that<!--> <!-->although each county has been in a state of carbon surplus<!--> <!-->during the research term, there is a spatial imbalance among them. The overall tendency of the net farming carbon sinks in<!--> <!-->the Hexi area showed fluctuations<!--> <!-->and an upward<!--> <!-->trend, with higher values observed in the eastern region than in the northwest. Ganzhou District and Shandan County play pivotal roles<!--> <!-->regarding the movement of the center of gravity concerning agricultural net carbon<!--> <!-->sequestrations. Cultivated land area per capita contributes to county-level agricultural net carbon sequestration within the Hexi region. Per capita agricultural GDP, agricultural industrial structure, and<!--> <!-->financial support for agriculture<!--> <!-->demonstrate remarkable active spillover effects. Conversely, urbanization exhibits a notable opposite spillover effect. Our results can provide a scientific basement for formulating differentiated policies for low-carbon<!--> <!-->agricultural development<!--> <!-->in the Hexi region.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112817"},"PeriodicalIF":7.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662229","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
Hyperspectral remote sensing of chlorophyll a and pheophorbide a pigments for macrobenthos mapping on an estuarine tidal flat 利用高光谱遥感叶绿素 a 和嗜磷酸盐 a 色素绘制河口滩涂大型底栖生物分布图
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-15 DOI: 10.1016/j.ecolind.2024.112850
Ting Zhang , Dunia Rios-Yunes , Bo Tian , Dongyan Liu , Qi Liu , Karline Soetaert , Yunxuan Zhou , Daphne van der Wal
{"title":"Hyperspectral remote sensing of chlorophyll a and pheophorbide a pigments for macrobenthos mapping on an estuarine tidal flat","authors":"Ting Zhang ,&nbsp;Dunia Rios-Yunes ,&nbsp;Bo Tian ,&nbsp;Dongyan Liu ,&nbsp;Qi Liu ,&nbsp;Karline Soetaert ,&nbsp;Yunxuan Zhou ,&nbsp;Daphne van der Wal","doi":"10.1016/j.ecolind.2024.112850","DOIUrl":"10.1016/j.ecolind.2024.112850","url":null,"abstract":"<div><div>Macrobenthos play critical roles in estuarine tidal flats through bioturbation, biodeposition, and bioirrigation and serve as key elements in the food web, depending largely on microphytobenthos (MPB) and serving as prey for birds. As traditional field-based methods for determining the spatial distribution of macrobenthos are costly and time-consuming, in this study we investigated the potential of inferring macrobenthos from degradation products of chlorophyll-a, a proxy for MPB biomass. First, we identified the macrobenthic groups most closely related to the pheophorbide-a and chlorophyll-a (Pheob-a/Chl-a) ratios via in situ data, although relationships were typically not significant. We then characterized the spectral characteristics of this ratio through controlled indoor experiments, integrated them into a hyperspectral algorithm, and mapped the spatial distribution of macrobenthos in the Western Scheldt estuary with this algorithm via PRecursore IperSpettrale della Missione Applicativa (PRISMA) hyperspectral satellite data. Specifically, the ratio was significantly (but weakly) related to the macrobenthic group of carnivorous/omnivorous/scavenger-feeding Malacostraca and bivalves and subsurface deposit-feeding Gastropoda, as verified by independent data, without showing significant relationships with many other groups. The blue spectrum was sensitive to Pheob-a/Chl-a, and a stacking model leveraging this spectrum was used to estimate the ratio. The results indicated substantial spatial heterogeneity in the estimated Pheob-a/Chl-a from the PRISMA images. The spatiotemporal relationships between these macrobenthic groups and MPB varied. Thus, while the method is not suited for macrobenthos mapping, our proposed approach paves the way for further research using hyperspectral imagery for ecological assessment, with its potential and limitations discussed.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112850"},"PeriodicalIF":7.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662233","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
Robustness assessment of urban cold island network based on green infrastructure–A case study of Bengbu, China 基于绿色基础设施的城市冷岛网络鲁棒性评估--中国蚌埠案例研究
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-15 DOI: 10.1016/j.ecolind.2024.112842
Nana Guo, Xinbin Liang
{"title":"Robustness assessment of urban cold island network based on green infrastructure–A case study of Bengbu, China","authors":"Nana Guo,&nbsp;Xinbin Liang","doi":"10.1016/j.ecolind.2024.112842","DOIUrl":"10.1016/j.ecolind.2024.112842","url":null,"abstract":"<div><div>Green infrastructure(GI) is important vehicle for mitigating urban heat islands(UHIs), and cold island areas can have real cooling effect on urban surface heat. Research on structural cooling strategies using GI network landscape connectivity as an entry point has gradually become a research hotspot; however, research lacks on enhancing GI cooling efficiency (cold island patch cooling effectiveness utilization or potential development) and dynamic construction adaptability. Tthe stability of a UCI network (UCIN) structure based on GI in different contexts can effectively enhance the efficiency and resilience of urban thermal environment regulations. This study considered the typical city of Bengbu and proposes an urban thermal environment research framework based on the robustness of UCINs, and land use and land surface temperature (LST) data, We extracted the core patches of GI by morphological spatial pattern analysis and screened UCI attributes to determine the UCIN source, constructed the resistance surface of thermal environment with the help of LST characteristics of land use, extracted UCIN corridors by the minimum cumulative resistance, and constructed the UCIN based on GI (GI-UCIN) in the mode of “source-corridor”. On this basis, the robustness characteristics of the UCIN were simulated with the help of multi-scenario network destruction experiments, the space to maintain the robustness of the UCIN structure was clarified, and the development and protection strategy of urban land classification to maintain the efficient and stable cooling effect of the GI-UCIN was proposed. The study shows that: (1) GI in Bengbu is the primary component of the UCI space, which can effectively break the spatial continuity of UHI patches; (2) GI-UCIN has the characteristics of a hollow outer dense circular structure and (3) the top 20% of GI-UCIN source nodes in the centrality ranking are key nodes in maintaining the effectiveness of the GI-UCIN. The results can provides a quantitative basis for determining the policy application point of GI development and protection oriented toward improvement of UHI; simultaneously, the research method can provides a new idea for urban cooling strategies, and further connect with urban planning and management.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112842"},"PeriodicalIF":7.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661868","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
Relationships between the spectral characteristics of dissolved organic matter and river ecological health indicators: A case study in the Shichuan River basin on a typical semi-arid and semi-humid region of China 溶解有机物光谱特征与河流生态健康指标之间的关系:中国典型半干旱半湿润地区石川河流域的案例研究
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-14 DOI: 10.1016/j.ecolind.2024.112836
Daoping Xi , En Hu , Ming Li , Jian Gao
{"title":"Relationships between the spectral characteristics of dissolved organic matter and river ecological health indicators: A case study in the Shichuan River basin on a typical semi-arid and semi-humid region of China","authors":"Daoping Xi ,&nbsp;En Hu ,&nbsp;Ming Li ,&nbsp;Jian Gao","doi":"10.1016/j.ecolind.2024.112836","DOIUrl":"10.1016/j.ecolind.2024.112836","url":null,"abstract":"<div><div>The spectral characteristics of dissolved organic matter (DOM) in rivers are considered as potential indicators of river health status. In this study, relationships between DOM spectral properties and river ecological health indicators in Shichuan River, such as total nitrogen (TN), total phosphorus (TP), chlorophyll-a (Chl-a) content, diversity of macrobenthic invertebrates, water quality index (WQI), and trophic level index (TLI), etc., were investigated. According to the WQI values, the water quality of the Ju River and Taoqupo Reservoir was generally better than that of other river sections, while the Qinghe and the mainstream sections performed the worst. The fluorescence index (FI) and WQI reflects that the mainstream of the Shichuan River bears a significant amount of sewage input. Besides, FI showed a significant positive correlation with nitrate nitrogen (NO<sub>3</sub><sup>−</sup>-N), TN, TP, Chl-a, and TLI, while a significant negative correlation with WQI. The specific ultraviolet absorbance of 254 nm (SUVA<sub>254</sub>) had a positive correlation with TLI. Indeed, the UVC humic-like component (C1) showed a significant positive correlation with the macroinvertebrates diversity. The humification index (HIX) was significantly negatively correlated with sediment pollution index. Our results suggested that DOM fluorescence characteristics had the potential to be developed as a convenient method for assessing aquatic ecological health.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112836"},"PeriodicalIF":7.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662293","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
Impacts of climate change and land Use/Cover change on ecological security networks in Changbai Mountains, Northeast China 气候变化和土地利用/覆盖变化对中国东北长白山生态安全网络的影响
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-14 DOI: 10.1016/j.ecolind.2024.112849
Jinyuan Ren , Wen J. Wang , Long Fei , Lei Wang , Shanfeng Xing , Yu Cong
{"title":"Impacts of climate change and land Use/Cover change on ecological security networks in Changbai Mountains, Northeast China","authors":"Jinyuan Ren ,&nbsp;Wen J. Wang ,&nbsp;Long Fei ,&nbsp;Lei Wang ,&nbsp;Shanfeng Xing ,&nbsp;Yu Cong","doi":"10.1016/j.ecolind.2024.112849","DOIUrl":"10.1016/j.ecolind.2024.112849","url":null,"abstract":"<div><div>A robust Ecological Security Network (ESN) is essential for protecting ecological security and promoting sustainable development within mountainous regions. These regions were highly sensitive to climate change and Land Use/Cover Change (LUCC), which could result in a degradation or even loss of ecosystem services and affect the structure and connectivity of ESN. Previous studies have paid relatively little attention to the construction and change of ESNs in these regions, particularly in distinguishing the individual (climate change or LUCC) effects and their interactive effects on ESN. In this study, we investigated the changes in the structure and connectivity of ESN in observed and projected periods and explored the impacts of climate change and LUCC on these changes through factor control experiments within the Changbai Mountain region. Our results showed an increase of 19.11% in the area of ecological sources and a 29.44% decrease in the length of corridors, accompanied by a decline in the connectivity of ESN over the past 30 years. The area of ecological sources was projected to decrease by 43.18%, while the length of corridors was expected to increase by 88.5%, with an overall increase in ESN connectivity in the next 30 years. We further found that the climate change and LUCC exhibited negative impacts on the structure and connectivity of ESN. Moreover, the changes in ESN structure were primarily attributed to LUCC effects, followed by climate change effects and their interactive effects. While the changes in ESN connectivity were significantly affected by climate change effects, followed by LUCC effects and their interactive effects. Notably, the interactive effects showed positive impacts on the ESN structure and connectivity. Our study offers important references for land management and policy formulation, aiming to preserve ecological security and ensure sustainable human development.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112849"},"PeriodicalIF":7.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662298","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
Landscape ecological risk assessment and driving factors analysis based on optimal spatial scales in Luan River Basin, China 基于最佳空间尺度的中国滦河流域景观生态风险评估及驱动因素分析
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-14 DOI: 10.1016/j.ecolind.2024.112821
Nijuan Yang , Ting Zhang , Jianzhu Li , Ping Feng , Nina Yang
{"title":"Landscape ecological risk assessment and driving factors analysis based on optimal spatial scales in Luan River Basin, China","authors":"Nijuan Yang ,&nbsp;Ting Zhang ,&nbsp;Jianzhu Li ,&nbsp;Ping Feng ,&nbsp;Nina Yang","doi":"10.1016/j.ecolind.2024.112821","DOIUrl":"10.1016/j.ecolind.2024.112821","url":null,"abstract":"<div><div>Rapid urbanization and human activities have significantly influenced landscape ecological pattern and increased ecological risk. Landscape ecological risk (LER) assessment serves as an effective tool to capture the effects of natural evolution and human activities on ecosystems comprehensively, but the assessment result is subject to spatial scales. This paper figured out the optimal spatial scales of the Luan River Basin integrating response curves, area accuracy loss model, and semi-variation function under the appropriate resampling method. The improved landscape ecological risk index (ILERI) model was established to assess LER based on optimal spatial scales, employing spatial autocorrelation theory and Geodetector to reveal the spatio-temporal traits and influencing factors of LER. The results showed: (1) Nearest is the appropriate raster resampling method in landscape pattern analysis of Luan River Basin, and the optimal spatial granularity and amplitude are 30 m and 3200 m, respectively; (2) In 2000, 2008, 2016 and 2022, ILERI was 0.242, 0.249, 0.250 and 0.234, respectively, and LER levels were medium–low and medium predominantly, which accounted for 64.87 %, 52.28 %, 68.76 % and 70.55 %; (3) Recent data showed a decline in LER levels, with higher risks concentrated in the northwest and lower risks in the southeast. Precipitation, population density, and primary industry were the primary factors and the interaction of multiple factors played a more significant role. This study will provide reference for planning land use and managing ecological environment in the Luan River Basin.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"169 ","pages":"Article 112821"},"PeriodicalIF":7.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662295","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
Analyzing the structural elements, ecological characteristics, and impact assessment of local green infrastructure in the coastal zone of Estonia 分析爱沙尼亚沿海地区地方绿色基础设施的结构要素、生态特征和影响评估
IF 7 2区 环境科学与生态学
Ecological Indicators Pub Date : 2024-11-14 DOI: 10.1016/j.ecolind.2024.112824
V. Kaskevich , M. Villoslada , R.D. Ward , K. Sepp
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