DYNAMIC MONITORING OF ECOLOGICAL ENVIRONMENT QUALITYOF LAND CONSOLIDATION BASED ON MULTI-SOURCE REMOTE SENSING DATA AND RSEI MODEL Shaofan Wei,Yalan Mo,Pu Wen

摘要

Land consolidation and ecological transformation are the inevitable trend of land consolidation development.It is very important to carry out scientific,reasonable,long-term and comprehensive monitoring of ecological environment quality in the study area.Therefore,a dynamic monitoring of ecological environment quality of land consolidation based on multi-source remote sensing data and RSEI model is proposed.Firstly,Taking Xiong’an New Area as the research area,according to the data sources of Landsat TM and OLI remote sensing images,the multi-source remote sensing data were preprocessed by ENVI5.1 software,so as to correct the distortion caused by atmospheric quality and sensor sensitivity.Then,the (RSEI was constructed by principal component analysis (PCA), which was integrated into the four indicators of greenness,humidity,dryness and heat,so as to evaluate the changes of eco-environmental quality in the process of renovation of Guilin city.Finally, based on the remote sensing data of Xiong’an New Area from 2005 to 2019,the results show that: humidity and greenness index have a positive effect on the eco-environmental quality of the project area,while the heat and dryness index have a negative effect,and the impact of the dryness index is the largest; the ecological environment quality of Xiong’an New Area presents the trend of "first decline,then rise,overall decline",which is shown as follows“ The results show that the disturbance of land consolidation to the ecological environment of the city is persistent.