Dynamic monitoring of the ecological environment quality of rural settlements in the Three Gorges Reservoir Area base on RSEI
The rural revitalization strategy emphasizes the integrated development of counties and townships.The ecological environment quality of rural settlements is an important part of rural ecological revitalization.The remote sensing index RSEI can be used to describe ecological environment quality of rural settlements.It has four indexes(humidity,greenness,dryness,and heat).The RSEI index was used to study the ecological environment quality of rural settlements in Zhongxian County,the core area of the Three Gorges Reservoir.The results showed that:(1)At the county scale,the greenness index first dropped and then rose,with a large change;the humidity index rose first,the change range was small;the dryness index dropped significantly;the heat index was similar to the greenness,first declined and then rose,with a small change.The changes in the four indexes indicated that the ecological environment quality of the study area was improved overall.(2)In some areas,the greenness rose to a high level;the humidity rose to a medium level;the dryness fell to a low level;the heat fell to a medium level.Among them,the construction land and a small number of areas in the southeast had different performances from the overall performance,and the changes were repeated.(3)The composition of the ecological environment quality had been different for many years.In 2002,it was medium,good,poor,excellent,and poor from more to less;in 2010,it was medium,poor,good,poor,and excellent;in 2019,it was good,excellent,and good.Medium,poor,and poor.The quality of the ecological environment in most of the study area was improved significantly.(4)From 2002 to 2010,the changes were small,and the overall ecological environment declined slightly;from 2010 to 2019,the overall ecological environment was greatly improved.(5)From the perspective of rural residential areas,the environmental quality was poor in 2002,improved in 2010,and dropped sharply in 2019.The research results can play a key role in rural revitalization in the Three Gorges Reservoir area.
ZhongxianRSEIecological environment qualitytemporal and spatial changes
万方数据
维普
