林业与生态科学2025，Vol.40Issue(1)：64-72,9.DOI:10.13320/j.cnki.hjfor.2025.0008
甘肃民勤连古城国家级自然保护区生态环境质量时空变化研究
Spatio-temporal variations of ecological environment quality in the national nature reserve of Lian Ancient City in Minqin County of Gansu Province
摘要
Abstract
Lian Ancient City is one of the most important ecological reserves in the north-western region of China,and the dynamic change of its ecological environment quality is of great importance for the improvement and future planning of the region's eco-environment,therefore we monitored the ecological quality of the ancient city and analysed the drivers of its dynamic changes in order to offer guidence for making governance measures to promote its sustainable development and long-term ecological stability.The four-phase LandsatTM/ETM+/OLI time sequence images form 2002 to 2020 of the ancient city nature reserve were selected as the study data,and NDVI,WET,NDBSI,LST were adopted to build a compre-hensive evaluation indicator system Geo-detectors were used for analyzing the impact of fac-tors like precipitation,temperature and evaporation on ecological environment quality chan-ges of the studied area.The environment quality change in the ancient city protected areas presented the order of"first decreasing-then rising-and then decreased".The average RSEI values fell by about 25.35％overall.In terms of the spatial change distribution of eco-logical quality,the degraded area and the improved area during 2002-2020 accounted for 96.72％and 3.28％of the total area respectively.Annual average temperature and annual aver-age rainfall were the main single factors affecting the quality of the ecological environment.The interaction of the factors has enhanced over time,and the interactions of the average an-nual temperature and evaporation quantity had the greatest influence on ecological quality.Therefore,the ecological environment quality of the ancient city protected areas shows a de-clining trend during 2002-2020,and the order of infulence is:average annual temperature＞average annual rainfall＞evaporation volume＞high range＞slope.关键词
生态环境质量/遥感生态指数模型/动态监测/驱动因子/地理探测器Key words
remote sensing ecological index/dynamic monitoring/driving factors/geographical detector/ecological environment quality分类
信息技术与安全科学引用本文复制引用
张玉霞,汤萃文,郑传贺,苏艳斌,王瑛瑛..甘肃民勤连古城国家级自然保护区生态环境质量时空变化研究[J].林业与生态科学,2025,40(1):64-72,9.基金项目
甘肃省科技计划(22JR5RA328). （22JR5RA328）
