首页|基于遥感生态指数的赣抚平原灌区生态环境质量变化评价

基于遥感生态指数的赣抚平原灌区生态环境质量变化评价

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  • NETL
  • NSTL
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赣抚平原灌区是江南最大的引水灌区，也是江西省灌溉面积最大的灌区，被视为典型的"人—社会—自然"复合生态系统。为探究赣抚平原灌区近20年来的生态环境变化状况，基于2002、2008、2015、2021年的Landsat TM/OLI遥感影像数据，应用主成分分析法将绿度(NDVI)、湿度(WET)、干度(NDBSI)、热度(LST)4个指标集成构建了遥感生态指数(RSEI)，对灌区2002～2021年的生态环境质量变化进行评价。结果表明:2002～2021年间赣抚平原灌区生态环境持续向好，RSEI均值由0。477增至0。552，增幅达15。71％，其中绿度和热度对生态质量影响最大;灌区的RSEI等级以中等等级为主，近20年来优、良好等级面积持续增加，48。37％的区域生态质量在变好，其中抚河东岸、进贤县境内的改善情况最为突出;受城市扩张以及干旱化水文气象的影响，生态环境质量变差区域多分布于主城区、农灌区、河湖沿岸地带，因此能否在灌区现代化建设的同时统筹气候变化与生态环境保护是实现灌区永续发展的关键。研究结果能够较好地表征赣抚平原灌区生态环境质量状况的变化，可为区域生态环境治理与保护提供理论参考和科学依据。
Evaluation of Ecological Environment Quality Change in Ganfu Plains Irrigation Area Based on Remote Sensing Ecological Index
The Ganfu Plains irrigation area is the largest water diversion irrigation area in Jiangnan and the largest irrigation area in Jiangxi Province.It is considered a typical"human-society-nature"composite ecosystem.To evaluate the ecological environment quality change of Ganfu Plains irrigation area from 2002 to 2021,the remote sensing ecological index(RSEI)was constructed by integrating four indicators of NDVI,WET,NDBSI and LST with the principal component analysis method.The Landsat TM/OLI remote sensing image data in 2002,2008,2015 and 2021 were used.The results showed that the ecological environment of Ganfu Plains irrigation area continued to improve from 2002 to 2021.The mean value of RSEI increased from 0.477 to 0.552,with an increase of 15.71％.NDVI and LST were the most significant influencing factors on ecological quality.The RSEI level of the irrigation area was mainly at the medium level.In the past 20 years,the area of excellent and fine ecological quality grades continued to increase with a rate of 48.37％.The most prominent improvement was in the east bank of Fuhe River and Jinxian County.Because of urban expansion and hydrometeorological drought,areas with deteriorating ecological environment quality were mostly distributed in the main urban areas,agricultural areas and coastal areas of rivers and lakes.Therefore,whether to coordinate climate change and ecological environment protection while modernizing irrigation areas was the key to achieve sustainable development in irrigation areas.The research results reflected the changes in the ecological environment quality of the Ganfu Plains irrigation area,and provided theoretical reference and scientific basis for regional ecological environment governance and protection.

Ganfu Plain irrigation arearemote sensing ecological indexecological environment qualityprin-cipal component analysisclimate change

李琴、詹聪、张金生、邓海龙、贾卓

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江西省科学院能源研究所,江西南昌 330096

江西省灌溉试验中心站,江西南昌 330201

南昌大学工程建设学院,江西南昌 330038

赣抚平原灌区 遥感生态指数 生态环境质量 主成分分析 气候变化

国家自然科学基金项目江西省水利厅重大科技项目江西省科学院省级科技计划项目包干制试点示范项目

42202278202224ZDKT242021YSBG22013

2024

10.11870/cjlyzyyhj202406017

长江流域资源与环境
中国科学院资源环境科学与技术局 中国科学院武汉文献情报中心

长江流域资源与环境

CSTPCDCSSCICHSSCD北大核心
影响因子：1.35
ISSN：1004-8227
年,卷(期)：2024.33(6)
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