乐山市土地利用与生态系统服务价值时空动态变化分析

乐山市地处四川山地丘陵区,是典型的绿心城市,具有重要的生态保护价值.以岷江流域乐山段为研究区域,基于乐山市2010、2017遥感影像,探析乐山市土地利用变化对生态系统服务价值(ESV)空间分布差异的影响.结果表明:(1)2010—2017年乐山市ESV显著提升,耕地、草地转林地面积较大,建设用地增值相对明显;(2)ES...

Spatial and temporal dynamic changes of land use and ecosystem service value in Leshan City

Leshan city is located in the mountainous and hilly region of Sichuan Province,which is a typical green heart city and has important ecological protection value.Taking Leshan section of Minjiang river basin as the research area,based on the remote sensing images of Leshan city in 2010 and 2017,the influence of land use change on the spatial distribution difference of ecosystem service value(ESV)in Leshan city was analyzed.The results show that:(1)From 2010 to 2017,the ESV of Leshan city increased significantly,the area of cultivated land and grassland converted to forest land was large,and the added value of construction land was relatively obvious.(2)ESV low-value areas included the area around the green center of the city and extended along the Minjiang River to Emeishan city,Wutongqiao city and Qianwei county,which suffered from large ecological disturbance and certain impact on the coordination of ecological environment.(3)The change of ESV in Leshan city showed polarization effect in space,which indicated that the ecological environment quality in Leshan city was obviously different,and further strengthening of regional ecological control was needed.This study combines land use change,clustering and outlier analysis,which can analyze the spatio-temporal dynamic change characteristics of land use change and ESV,clearly shows the spatial distribution differences of land use change,and provides basis and reference for the regional ecological protection planning and urban ecological construction of Leshan city.