干旱影响遥感支持弹性土地利用和城市边缘规划及供电系统

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management Pub Date : 2025-09-04 DOI:10.1016/j.rama.2025.08.002

Siqi Zhang , WenYang Xu , Iram Naz , Xiangtian Zheng , Mohammad Suhail Meer , Habib Kraiem , Rana Muhammad Zulqarnain , Qaiser Abbas

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引用次数: 0

摘要

干旱对牧场生态系统、土地利用的可持续性和基础设施系统（包括城市边缘附近的能源网络）的复原力构成严重威胁。本研究采用多指数遥感方法，通过对比非干旱（2023年）和干旱（2024年）条件，评价干旱对草地的时空影响。利用植被健康指数（VHI）、植被状况指数（VCI）、归一化植被指数（NDVI）、土壤湿度指数（SMI）、归一化水分指数（NDWI）、温度状况指数（TCI）、地表温度（LST）、标准化降水指数（SPI）、蒸发胁迫指数（ESI）、帕尔默干旱严重指数（PDSI）和干旱严重指数（DSI）等卫星衍生指数来描述干旱的特征。主成分分析确定了三个核心干旱维度：植被响应、热应力和土壤水分动态，解释了总方差的78%。值得注意的是，VCI、NDWI和TCI是干旱胁迫最敏感的指标。西部放牧区生态恢复能力最强，东部放牧区生态恢复能力最强。土地覆盖分析显示，干旱期间牧场面积增加1.2%，这主要是由于灌木地的转变，表明植被制度可能发生变化。这些发现不仅为生态管理提供了信息，也为城市边缘规划提供了信息，在城市边缘规划中，干旱下土地利用的变化可能会影响基础设施的脆弱性和电力系统的可靠性。本研究通过提供一个全面、空间明确的干旱评价框架，支持半干旱城市化地区土地利用综合规划，增强社会生态系统和能源系统的适应能力。这些结果增强了我们对牧场生态系统如何响应干旱的理解，并为评估全球类似半干旱地区的干旱影响提供了一个方法学框架。

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Remote Sensing of Drought Impacts to Support Resilient Land Use and Urban Fringe Planning and Power Supply System

Drought poses a critical threat to rangeland ecosystems, land use sustainability, and the resilience of infrastructure systems, including energy networks near urban fringes. This study applies a multi-index remote sensing approach to evaluate the spatial and temporal impacts of drought on rangelands by comparing nondrought (2023) and drought (2024) conditions. Satellite-derived indices such as Vegetation Health Index (VHI), Vegetation Condition Index (VCI), Normalized Difference Vegetation Index (NDVI), Soil Moisture Index (SMI), Normalized Difference Water Index (NDWI), Temperature Condition Index (TCI), Land Surface Temperature (LST), Standardized Precipitation Index (SPI), Evaporative Stress Index (ESI), Palmer Drought Severity Index (PDSI), and Drought Severity Index (DSI) were integrated to characterize drought manifestations. Principal Component Analysis identified three core drought dimensions: vegetation response, thermal stress, and soil moisture dynamics, explaining 78% of the total variance. Notably, VCI, NDWI, and TCI emerged as the most sensitive indicators of drought stress. Western regions rangelands experienced the highest severity, while eastern regions showed greater ecological resilience. Land cover analysis revealed a 1.2% increase in rangeland area during drought, largely due to the conversion of shrublands, indicating a potential shift in vegetation regimes. These findings inform not only ecological management but also urban fringe planning, where land-use shifts under drought may affect infrastructure vulnerability and power system reliability. By offering a comprehensive, spatially explicit drought assessment framework, this study supports integrated land-use planning and enhances the adaptive capacity of socio-ecological and energy systems in semi-arid urbanizing regions. The results enhance our understanding of how rangeland ecosystems respond to drought and offer a methodological framework for assessing drought impacts in comparable semi-arid regions worldwide.

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来源期刊

Rangeland Ecology & Management 农林科学-环境科学

CiteScore

4.60

自引率

13.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes. Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.