Ecological Informatics最新文献

筛选
英文 中文
Urban expansion in highly populous East Asian megacities during 1990–2020: Tokyo, Seoul, Beijing, and Shanghai 1990-2020 年间人口众多的东亚特大城市的城市扩张:东京、首尔、北京和上海
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-10-02 DOI: 10.1016/j.ecoinf.2024.102843
Rui Xiao , Yuji Murayama , Kun Qin , Jingling Su , Zhi Gao , Liu Liu , Gang Xu , Limin Jiao
{"title":"Urban expansion in highly populous East Asian megacities during 1990–2020: Tokyo, Seoul, Beijing, and Shanghai","authors":"Rui Xiao ,&nbsp;Yuji Murayama ,&nbsp;Kun Qin ,&nbsp;Jingling Su ,&nbsp;Zhi Gao ,&nbsp;Liu Liu ,&nbsp;Gang Xu ,&nbsp;Limin Jiao","doi":"10.1016/j.ecoinf.2024.102843","DOIUrl":"10.1016/j.ecoinf.2024.102843","url":null,"abstract":"<div><div>The world is experiencing unprecedented urbanization, particularly through the continuous growth of megacities, leading to significant urban land expansion. The spatial layout and growth patterns of urban areas play a critical role in determining cities' sustainable development. However, the optimal path for cities undergoing rapid urbanization remains uncertain. This study examines four megacities—Tokyo, Seoul, Beijing, and Shanghai—and, from the perspective of urban land density, compares their patterns and processes of land expansion in 1990, 2000, 2010, and 2020. Findings reveal that the urban land area of China's megacities has expanded nearly fourfold over the past three decades. Meanwhile, Tokyo and Seoul have adopted a polycentric urban structure, becoming increasingly compact. In contrast, Beijing and Shanghai are only beginning to show signs of polycentric development. The study concludes that cities experiencing rapid growth should not impose excessive limitations on urban expansion. Polycentric and compact development has become a critical strategy for megacities. These insights offer valuable guidance for urban planning and sustainable development in both established and emerging megacities across East Asia.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419501","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
Corrigendum to “The bioacoustic soundscape of a pandemic: Continuous annual monitoring using a deep learning system in Agmon Hula Lake Park” 大流行病的生物声学声景:利用深度学习系统对阿格蒙呼拉湖公园进行年度连续监测"
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-28 DOI: 10.1016/j.ecoinf.2024.102834
Yizhar Lavner , Ronen Melamed , Moshe Bashan , Yoni Vortman
{"title":"Corrigendum to “The bioacoustic soundscape of a pandemic: Continuous annual monitoring using a deep learning system in Agmon Hula Lake Park”","authors":"Yizhar Lavner ,&nbsp;Ronen Melamed ,&nbsp;Moshe Bashan ,&nbsp;Yoni Vortman","doi":"10.1016/j.ecoinf.2024.102834","DOIUrl":"10.1016/j.ecoinf.2024.102834","url":null,"abstract":"","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538109","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
Estimating the dynamics and driving factors of gross primary productivity over the Chinese Loess Plateau by the modified vegetation photosynthesis model 利用改进的植被光合作用模型估算中国黄土高原总初级生产力的动态和驱动因素
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-27 DOI: 10.1016/j.ecoinf.2024.102838
Enjun Gong , Jing Zhang , Zhihui Wang , Jun Wang
{"title":"Estimating the dynamics and driving factors of gross primary productivity over the Chinese Loess Plateau by the modified vegetation photosynthesis model","authors":"Enjun Gong ,&nbsp;Jing Zhang ,&nbsp;Zhihui Wang ,&nbsp;Jun Wang","doi":"10.1016/j.ecoinf.2024.102838","DOIUrl":"10.1016/j.ecoinf.2024.102838","url":null,"abstract":"<div><div>Gross primary productivity (GPP) is a key parameter in research on the global carbon cycle and changes. Understanding the spatiotemporal dynamics and influencing factors of GPP on the Loess Plateau (LP) helps identify the health status of ecosystems, thereby enabling the implementation of effective conservation and restoration measures. In this study, we used a modified vegetation photosynthesis model (VPM) to simulate a long-term series of GPP in the LP from 2001 to 2022, and the impacts of different land-use patterns and meteorological factors on GPP were investigated using a transition matrix, linear regression, and partial correlation analyses. The findings suggested that the modified simulation yielded a more reliable performance (coefficient of determination (<em>R</em><sup>2</sup>) = 0.89, root mean square error (RMSE) = 143.47 gC·m<sup>−2</sup>·yr<sup>−1</sup>) and was suitable for further research endeavors. (1) The GPP on the LP significantly increased by 232.65 TgC from 2001 to 2022. The southeastern region contributed more than the northwestern region, and the GPP exhibited higher multi-year averages and growth rates below 1000 m elevation. (2) Forests in the southeastern region of the LP, characterized by a heightened growth rate, will influence future spatial variations in GPP increases across the LP. Despite the decline in grassland and cultivated land areas, substantial land coverage has significantly contributed to the overall GPP growth. Urbanization encroaching on cultivated land has emerged as a key contributor to the decline in GPP in low-altitude regions. (3) Air temperature was the main physical driving force for GPP change in the LP. Additionally, the GPP in forested regions exhibited a negative correlation with rainfall, whereas the GPP in areas undergoing the return of cropland to forest–grassland and cropland reclamation correlated negatively with solar radiation. (4) The attribution analysis indicated that the surge in vegetation GPP on the LP was collectively driven by human activities and meteorological changes, with human activities dominating these changes by 61.41 %. This study deepens the understanding of terrestrial ecology in semi-humid regions and provides scientific insights for implementing ecological governance strategies in the LP.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419649","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
Probabilistic crop type mapping for ex-ante modelling and spatial disaggregation 用于事前建模和空间分解的概率作物类型绘图
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-27 DOI: 10.1016/j.ecoinf.2024.102836
Josef Baumert, Thomas Heckelei, Hugo Storm
{"title":"Probabilistic crop type mapping for ex-ante modelling and spatial disaggregation","authors":"Josef Baumert,&nbsp;Thomas Heckelei,&nbsp;Hugo Storm","doi":"10.1016/j.ecoinf.2024.102836","DOIUrl":"10.1016/j.ecoinf.2024.102836","url":null,"abstract":"<div><div>Agricultural land use and management fundamentally impacts the condition of natural resources like waterbodies, soils, and biodiversity. Modelling the anthropogenic effects on those resources over time requires detailed knowledge of the temporal and spatial distribution of crops. However, currently available crop type maps for Europe either lack the required spatial resolution or the temporal and spatial coverage. We develop and apply a probabilistic, spatially explicit crop type mapping approach that is suitable for ex-post and ex-ante modelling. The approach allows to quantify epistemic and aleatoric uncertainty related to estimated crop shares by providing an ensemble of maps. We implement the method for the EU-28 for the years 2010 – 2020, distinguishing between 28 different crop types at 1 km resolution. Based on a model of the data generating process that conceptually links field-, grid cell- and region-level crop acreages, our approach considers soil, climate, and topography information, as well as administrative data. The validation with ground-truthing data for France indicates that the generated crop type maps are plausible. The provided uncertainty intervals capture differences in uncertainty across space and time and correctly identify grid cells and crops where estimations are less precise. The generated maps constitute a unique data product of high practical value, e.g., for agri-environmental modelling applications. We see additional potential in using the approach to disaggregate the regional or national predictions of socio-economic ex-ante prediction models.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419593","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
Assessment of nomadic pastoralists' livelihood vulnerability to the changing climate in the Third Pole region: Case study in the Altai Mountains of western Mongolia 第三极地区游牧民生计易受气候变化影响的评估:蒙古西部阿尔泰山案例研究
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-27 DOI: 10.1016/j.ecoinf.2024.102835
Altansukh Ochir , Woo-Kyun Lee , Sonam Wangyel Wang , Otgonbayar Demberel , Undarmaa Enkhsaikhan , Byambadash Turbat , Munkhnasan Lamchin , Bayarmaa Munkhbat , Oyunchimeg Namsrai
{"title":"Assessment of nomadic pastoralists' livelihood vulnerability to the changing climate in the Third Pole region: Case study in the Altai Mountains of western Mongolia","authors":"Altansukh Ochir ,&nbsp;Woo-Kyun Lee ,&nbsp;Sonam Wangyel Wang ,&nbsp;Otgonbayar Demberel ,&nbsp;Undarmaa Enkhsaikhan ,&nbsp;Byambadash Turbat ,&nbsp;Munkhnasan Lamchin ,&nbsp;Bayarmaa Munkhbat ,&nbsp;Oyunchimeg Namsrai","doi":"10.1016/j.ecoinf.2024.102835","DOIUrl":"10.1016/j.ecoinf.2024.102835","url":null,"abstract":"<div><div>The High Mountains of Asia, often called the “Third Pole” because they constitute the third largest reserve of water after the North and South Poles, are an important landscape worldwide. Western Mongolia forms part of the northeastern extent of the Third Pole, characterized by high mountain ranges and river catchment areas. The ecosystems in these high mountains, including the nomads that inhabit them, are fragile and vulnerable to environmental changes. In this study, we conducted household interviews with nomads in the Tsambagarav (TsGM) and the Munkhkhairkhan (MKhM) Mountains and, used a sustainable livelihood approach to assess the livelihood vulnerability index (LVI) of the nomads. The results showed that the overall LVI was 0.41 for TsGM and 0.44 for MKhM, with corresponding Intergovernmental Panel on Climate Change-LVI of 0.01 for TsGM and − 0.02 for MKhM. Based on the findings, we recommend that decision-makers should focus on several key areas: effectively managing pasture land; implementing policies for sustainable yields; establishing an insurance-based compensation system, post-disaster communication system; and a mobile-economy informative early warning system; and lowering the loan interest rate. Among recommendations, developing a mobile-economy informative early warning system is an innovative idea to mitigate climate change disasters. These actions can contribute to a long-term sustainable livelihood in the fast-changing climate.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419594","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
Simulating multi-scale optimization and variable selection in species distribution modeling 模拟物种分布模型中的多尺度优化和变量选择
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-25 DOI: 10.1016/j.ecoinf.2024.102832
Samuel A. Cushman , Zaneta M. Kaszta , Patrick Burns , Christopher R. Hakkenberg , Patrick Jantz , David W. Macdonald , Jedediah F. Brodie , Mairin C.M. Deith , Scott Goetz
{"title":"Simulating multi-scale optimization and variable selection in species distribution modeling","authors":"Samuel A. Cushman ,&nbsp;Zaneta M. Kaszta ,&nbsp;Patrick Burns ,&nbsp;Christopher R. Hakkenberg ,&nbsp;Patrick Jantz ,&nbsp;David W. Macdonald ,&nbsp;Jedediah F. Brodie ,&nbsp;Mairin C.M. Deith ,&nbsp;Scott Goetz","doi":"10.1016/j.ecoinf.2024.102832","DOIUrl":"10.1016/j.ecoinf.2024.102832","url":null,"abstract":"<div><div>Species distribution modeling (SDM) is a fundamental tool in theoretical and applied ecology. However, relatively little is known about the performance of different approaches for scale optimization, model selection, and algorithmic prediction in the context of nonlinear, multiscale and interactive relationships between environmental variables and species occurrence. Modelers often struggle to optimize a tradeoff between ecological relevance, model robustness, complexity, and overfitting. In this paper, we investigated several methods designed to optimize spatial scale and variable selection in SDMs, in each case evaluating model fitness, parsimony and predictive performance. We used a simulation approach to produce a large pool of alternative underlying habitat relationships that reflect a broad range of realistic habitat associations. We also compared several different modeling algorithms, including logistic regression with a generalized linear model (GLM), Lasso and Elastic-Net Regularized GLMs (GLMNet), and random forest (RF), as well as alternative variable and scale selection methods. We found that GLM methods employing all-subsets dredge routines for variable selection were consistently the best predictors based on all criteria of our model performance assessment and across all attributes of the simulated underlying relationship, including nonlinearity and interaction. We had expected machine learning approaches, such as random forest, to perform better in these more complex forms of species-environment relationships. GLM using dredge variable selection was also the method that included the fewest spurious covariates and included the most correct predictors as a proportion of all predictors. We found that univariate scaling was the most robust method of variable and scale selection, along with Minimal Redundancy Maximal Relevancy (MRMR) which performed equivalently. The simulation experiment presented here provides a robust assessment of simulated multi-species distribution model performance, complexity and fidelity. By simulating a large range of potential habitat relationships with varying spatial scale, effect sizes, linearity, and interactions, we comprehensively evaluated model performance across gradients of complexity of the underlying relationships and violations of classical statistical assumptions. This study provides a valuable assessment and a broader example of the power and utility of controlled simulation experiments in habitat relationships and other ecological spatial predictive modeling.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323746","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
Reconstructing daytime and nighttime MODIS land surface temperature in desert areas using multi-channel singular spectrum analysis 利用多通道奇异光谱分析重建沙漠地区昼夜 MODIS 陆面温度
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-24 DOI: 10.1016/j.ecoinf.2024.102830
Fahime Arabi Aliabad , Mohammad Zare , Hamidreza Ghafarian Malamiri , Amanehalsadat Pouriyeh , Himan Shahabi , Ebrahim Ghaderpour , Paolo Mazzanti
{"title":"Reconstructing daytime and nighttime MODIS land surface temperature in desert areas using multi-channel singular spectrum analysis","authors":"Fahime Arabi Aliabad ,&nbsp;Mohammad Zare ,&nbsp;Hamidreza Ghafarian Malamiri ,&nbsp;Amanehalsadat Pouriyeh ,&nbsp;Himan Shahabi ,&nbsp;Ebrahim Ghaderpour ,&nbsp;Paolo Mazzanti","doi":"10.1016/j.ecoinf.2024.102830","DOIUrl":"10.1016/j.ecoinf.2024.102830","url":null,"abstract":"<div><div>The availability of continuous spatiotemporal land surface temperature (LST) with high resolution is critical for many disciplines including hydrology, meteorology, ecology, and geology. Like other remote sensing data, satellite–based LST is also encountered with the cloud issue. In this research, over 5000 daytime and nighttime MODIS–LST images are utilized during 2014–2020 for Yazd–Ardakan plain in Yazd, Iran. The multi–channel singular spectrum analysis (MSSA) model is employed to reconstruct missing values due to dusts, clouds, and sensor defect. The selection of eigenvalues is based on the Monte Carlo test and the spectral analysis of eigenvalues. It is found that enlarging the window size has no effect on the number of significant components of the signal which account for the most variance of the data. However, data variance changes for all the three components. Employing two images per day, window sizes 60, 180, 360, and 720 are examined for reconstructing one year LST, where these selections are based on monthly, seasonal, semi-annual, and annual LST cycles, respectively. The results show that window size 60 had the least computational cost and the highest accuracy with RMSE (root mean square error) of 2.6 °C for the entire study region and 1.4 °C for a selected pixel. The gap–filling performance of MSSA is also compared with the one by the harmonic analysis of time series (HANTS) model, showing the superiority of MSSA with an improved RMSE of about 2.7 °C for the study region. In addition, daytime and nighttime LST series for different land covers are compared. Lastly, the maximum, minimum, and average LST for each day and night as well as average and standard deviation of LST images in the seven-year-long time series are also computed.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323668","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
Articulating environmental sustainability dynamics with space-time cube 用时空立方体阐述环境可持续性动态
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-23 DOI: 10.1016/j.ecoinf.2024.102833
Dezhi Wang , Zhenxiu Cao , Minghui Wu , Bo Wan , Sifeng Wu , Quanfa Zhang
{"title":"Articulating environmental sustainability dynamics with space-time cube","authors":"Dezhi Wang ,&nbsp;Zhenxiu Cao ,&nbsp;Minghui Wu ,&nbsp;Bo Wan ,&nbsp;Sifeng Wu ,&nbsp;Quanfa Zhang","doi":"10.1016/j.ecoinf.2024.102833","DOIUrl":"10.1016/j.ecoinf.2024.102833","url":null,"abstract":"<div><div>Conceptually, environmental sustainability involves maintaining crucial environmental functions while considering both present and future development. However, existing methods for expressing environmental sustainability are mainly derived from a steady state with minimal spatial explicitness. Furthermore, the environmental impact of certain events may exhibit a lag, particularly in basins. Here, we propose a framework that employs a space-time cube to articulate environmental sustainability. This cube can visualize the environment's evolution over time, identify hot and cold spots in space, and concurrently determine underlying influencing factors via spatial regression analysis. Unlike traditional methods, the space-time cube incorporates not only spatial dimensions but also temporal dimensions. We applied this framework to China's upper Han River basin, using the Remote Sensing Ecological Index (RSEI) as an indicator of environmental sustainability. It enabled us to chart the basin's ecological trajectory with spatial and temporal explicitness from 1990 to 2020. Our findings reveal that climate change (represented by temperature and precipitation changes) and human activities (represented by nighttime light) were the main factors driving changes in environmental sustainability from 2000 to 2020 in the basin. Therefore, our proposed spatial-temporal integration framework proves to be an efficient tool in articulating environmental sustainability.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326679","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
Spatiotemporal analysis of carbon emissions in the Yangtze River Delta Urban Agglomeration: Insights from nighttime light data (1992–2019) 长三角城市群碳排放的时空分析:夜间光照数据的启示(1992-2019年)
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-22 DOI: 10.1016/j.ecoinf.2024.102831
Jing Gao , Shenglong Zhao , Lucang Wang , Xiaoping Wang
{"title":"Spatiotemporal analysis of carbon emissions in the Yangtze River Delta Urban Agglomeration: Insights from nighttime light data (1992–2019)","authors":"Jing Gao ,&nbsp;Shenglong Zhao ,&nbsp;Lucang Wang ,&nbsp;Xiaoping Wang","doi":"10.1016/j.ecoinf.2024.102831","DOIUrl":"10.1016/j.ecoinf.2024.102831","url":null,"abstract":"<div><div>Continuous evaluation and monitoring of long-term energy usage and carbon emissions are essential for developing, implementing, and assessing regional carbon reduction efforts. This study presents a spatiotemporal analysis of carbon emission trends in the Yangtze River Delta Urban Agglomeration (YRDUA) from 1992 to 2019. Researchers used nighttime light data from the Defense Meteorological Satellite Program's Operational Linescan System (DMSP/OLS) and the National Polar-orbiting Partnership's Visible Infrared Imaging Radiometer Suite (NPP/VIIRS) to assess the evolution of carbon emission patterns. Advanced spatial analysis methods, including geographic autocorrelation, geographical panel modeling, and spatial Markov chains, were applied to explore the spatial impacts, processes, and regional context of these trends. The results show: (1) Carbon emissions in the YRDUA increased by 262.56 %, with high-emission spheres and axial expansion. High-high emission clusters emerged in metropolitan areas, while low-low clusters formed in peripheral mountain regions. (2) Carbon emission types were stable (66.5 %), but 17.6 % showed higher emissions transitioning to lower, particularly in northeast Jiangsu. (3) The broader regional background had a stronger influence on the spatial impacts of carbon emissions than nearest neighbor effects, enhancing both outlier convergence and “club convergence” among similar regions. (4) Spatiotemporal patterns were shaped by the lock-in effect in low-carbon areas and spillover effects in high-carbon areas, with economic scale and industrial structure as key drivers. This study provides crucial insights for regional carbon reduction strategies in the YRDUA.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358616","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
River quality management: Integrating uncertainty, failure probability, and assimilation capacity 河流质量管理:整合不确定性、故障概率和同化能力
IF 5.8 2区 环境科学与生态学
Ecological Informatics Pub Date : 2024-09-21 DOI: 10.1016/j.ecoinf.2024.102829
Mohsen Dehghani Darmian, Britta Schmalz
{"title":"River quality management: Integrating uncertainty, failure probability, and assimilation capacity","authors":"Mohsen Dehghani Darmian,&nbsp;Britta Schmalz","doi":"10.1016/j.ecoinf.2024.102829","DOIUrl":"10.1016/j.ecoinf.2024.102829","url":null,"abstract":"<div><div>Managing river water quality is challenging due to uncertainties in hydraulic and hydrologic parameters. This study integrates the symmetric exponential function (SEF) approach for solving the advection-dispersion equation with the Monte Carlo method in MATLAB. This combination allows us to explore the river's assimilation capacity and the failure probability (<span><math><msub><mi>P</mi><mi>f</mi></msub></math></span>) of maintaining desired water quality standards. Here, <span><math><msub><mi>P</mi><mi>f</mi></msub></math></span> represents the likelihood of pollutant concentrations exceeding acceptable limits under varying river conditions. A key contribution of this study is the introduction of a novel equation, developed using the Genetic Programming (GP) soft computing tool, to calculate assimilation capacity considering the failure probability of water quality provision. This equation provides a valuable tool for risk assessment in water resource management by quantifying pollutant assimilation dynamics. Its robustness is validated through high Coefficient of Determination (R<sup>2</sup>) and Overall Index (OI) values near 1, along with low Root Mean Square Error (RMSE) and Mean Absolute Error (MAE). The study identifies critical river characteristics, such as flow velocity and pollutant load, significantly influencing the reliability index (<span><math><mi>β</mi></math></span>). By outlining how adjustments in these parameters can achieve a target reliability index (<span><math><mi>β</mi><mo>=</mo><mn>4.526</mn></math></span>), our study offers a practical approach to safeguarding river ecosystems. For example, increasing flow velocity by 76 % can shift the river from a safe state (<span><math><msub><mi>P</mi><mi>f</mi></msub><mo>=</mo><mn>3</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>5</mn></mrow></msup></math></span>) to a hazardous state (<span><math><msub><mi>P</mi><mi>f</mi></msub><mo>=</mo><mn>1</mn></math></span>), while a 44 % decrease in velocity allows for 57 % more pollutant assimilation. These findings highlight the importance of flow control as a cost-effective strategy for mitigating high pollutant concentrations and ensuring sustainable water quality management. By integrating numerical approaches with reliability sampling methods and soft computing techniques, this study enhances understanding of river system dynamics and supports informed decision-making for protecting water resources.</div></div>","PeriodicalId":51024,"journal":{"name":"Ecological Informatics","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323669","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信