Assessment and prediction of land ecological environment quality change based on remote sensing-a case study of the Dongting lake area in China

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Hu, Wenmin^1 ; Wang, Zhongcheng^1 ; Li, Chunhua^1 ; Zhao, Jin^1 ; Li, Yi^2

College of Forestry, Central South University of Forestry and Technology, LinDa Road No.1, TianXin District, Changsha, Hunan

410002, China^1

College of Resources and Environment, Hunan Agricultural University, Nongda Road No.1, FuRong District, Changsha, Hunan

410002, China^2

关键词: Agglomeration effects;    Comprehensive assessment;    Comprehensive indices;    Ecological environments;    Ecological restoration;    Environmental factors;    Environmental quality;    Surface temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032053/pdf
DOI  :  10.1088/1755-1315/121/3/032053

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Multi-source remote sensing data is rarely used for the comprehensive assessment of land ecologic environment quality. In this study, a digital environmental model was proposed with the inversion algorithm of land and environmental factors based on the multi-source remote sensing data, and a comprehensive index (Ecoindex) was applied to reconstruct and predict the land environment quality of the Dongting Lake Area to assess the effect of human activities on the environment. The main finding was that with the decrease of Grade I and Grade II quality had a decreasing tendency in the lake area, mostly in suburbs and wetlands. Atmospheric water vapour, land use intensity, surface temperature, vegetation coverage, and soil water content were the main driving factors. The cause of degradation was the interference of multi-factor combinations, which led to positive and negative environmental agglomeration effects. Positive agglomeration, such as increased rainfall and vegetation coverage and reduced land use intensity, could increase environmental quality, while negative agglomeration resulted in the opposite. Therefore, reasonable ecological restoration measures should be beneficial to limit the negative effects and decreasing tendency, improve the land ecological environment quality and provide references for macroscopic planning by the government.