摘要
评价生态环境质量状况变化情况对生态文明建设至关重要。以生物丰富度、植被覆盖、水网密度、土地胁迫、污染负荷指数构建生态环境状况指数(EI),以湿度指标(WET)、绿度指标(NDVI)、热度指标(LST)、干度指标(NDBSI)构建遥感生态指数(RESI),结合EI和RSEI指数变化情况评价南京市2010—2020年生态环境质量状况并比较分析。结果表明:南京市生态环境状况指数(EI)波动上升,其中生物丰度、水网密度指数缓慢下降,植被覆盖指数持续上升,土地胁迫、污染负荷指数先升后降;南京市生态遥感指数(RSEI)平均值由0.7973降到0.7616,但从空间分布上看生态环境状况明显改善。两种方法评价结果基本一致,2010—2020年南京市生态环境质量有所改善。时间范围上EI指数更为全面,但RSEI指数相对更为客观。本研究结果可为南京市生态环境治理和政策制定提供参考。
Evaluating the state of ecological environment change is crucial to the construction of ecological civilization.The ecological environment status index(EI)is constructed by biological richness,vegetation cover,water network density,land stress and pollution load index,while the remote sensing ecological index(RESI)is constructed by humidity index(WET),greenness index(NDVI),heat index(LST)and dryness index(NDBSI).The changes of EI and RSEI are referred to evaluate the ecological environment quality status of Nanjing in the period of 2010—2020,and analyzed comparatively.The results show that the EI fluctuates and increases in Nanjing,in which the biological abundance and water network density indices slowly decrease,the vegetation cover index continues to increase,and the land stress and pollution load indices first increase and then decrease.The average value of Nanjing RSEI decreased from 0.7973 to 0.7616,but the ecological environmental condition improved significantly from the spatial distribution.The evaluation results of the two methods are basically consistent,and the ecological environmental quality of Nanjing improved from 2010 to 2020.The EI is more comprehensive on the time scale,while the RSEI is relatively more objective.The results of this study can provide a reference for ecological environment management and policy making of Nanjing.
作者
章熙然
陈德超
王诗雨
许晨
ZHANG Xiran;CHEN Dechao;WANG Shiyu;XU Chen(School of Environmental Science and Engineering,SUST,Suzhou 215009,China;School of Geographical Science and Geomatics Engineering,SUST,Suzhou 215009,China)
出处
《苏州科技大学学报(自然科学版)》
2025年第2期61-67,共7页
Journal of Suzhou University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金项目(42201132)
江苏省研究生科研创新计划项目(KYCX21_3046)。
