摘要
为了了解广昌县生态环境质量及其时空变化,基于遥感生态指数(RSEI)对广昌县1997―2021年间的生态环境质量进行了评价。结果表明,生态环境质量相对差的区域主要分布在人口密集的区域,受人为改造作用明显;各年限广昌县RSEI均值分别为0.5826、0.5717、0.5867、0.5591、0.6182,总体生态环境呈现退化、改善、退化再改善的趋势;从空间上看,研究区内环境质量一般和良的面积所占比重最大,较差的面积占比较小,优和差的面积几乎不占比;从时空变化情况上看,1997―2010年广昌县总体生态环境相对稳定,2010―2016年有大面积的退化,但2016年生态文明示范区建立至今,县内35.18%的区域得到了不同程度的改善,说明近年来政府采取的手段措施都取得了不错的成效。
In order to understand the ecological environment quality and its temporal and spatial changes in Guangchang county,Ecological index based on Remote Sensing(RSEI)evaluated the eco-environmental quality of Guangchang county from 1997 to 2021.The results showed that the areas with relatively low eco-environmental quality were mainly distributed in densely populated areas,which were obviously affected by human transformation;the average RSEI of Guangchang county in each year were 0.5826,0.5717,0.5867,0.5591 and 0.6182 respectively,and the overall ecological environment showed the trend is degradation,improvement,degradation and improvement;In terms of space,the area with general and good environmental quality accounts for the largest proportion,the area with poor environmental quality accounts for a relatively small proportion,and the area with excellent and poor environmental quality accounts for almost no proportion;From the perspective of temporal and spatial changes,the overall ecological environment of Guangchang county was relatively stable from 1997 to 2010,and there was a large area of degradation from 2010 to 2016.However,since the establishment of the ecological civilization demonstration area in 2016,35.18%of the area in the county has been improved to varying degrees,indicating that the means and measures taken by the government have achieved good results in recent years.
作者
吴思楷
李满根
陈念楠
黄振兴
刘颖
WU Sikai;LI Mangen;CHEN Niannan;HUANG Zhenxing;LIU Ying(East China University of Technology,330013,Nanchang,PRC)
出处
《江西科学》
2022年第4期711-717,787,共8页
Jiangxi Science
基金
中国核工业地质局项目“二连基地砂岩型铀成矿环境和条件调查评价研究”(地LCEQ01)。
关键词
生态环境质量评价
广昌县
遥感生态指数
抚河流域
ecological environment quality evaluation
Guangchang county
Remote Sensing Ecological Index(RSEI)
Fuhe River Basin