2007—2017年重庆市北碚近郊区景观结构及生态服务功能评价分析

摘要

Based on satellite remote sensing images and investigation data of rural landscape types in mountainous zone of suburban in Beibei by using 3S technology,this paper analyzed the changes of land-scape structure from 2007 to 2017,and studied the evaluation of ecosystem service function.The results showed that during the research period, the change rate of construction land was fastest, reaching 32.19%, the change of landscape was severe during 2012—2017 with frequent land circulation,the spa-tial connectivity of landscape types,and heterogeneity and fragmentation of landscape increased,the fluc-tuation of ESV decreased on grassland、farmland and forestland, increased on water and remained un-changed on other land,and that the fluctuation of ecosystem service function evaluation decreased.%以卫星遥感影像为主要数据源,利用3S技术对重庆市北碚近郊区山落地带乡村景观类型进行调查,分析2007—2017年景观结构的变化情况,并对其生态系统服务功能价值进行分析.结果表明,研究期内北碚近郊区建设用地变化速度最快,达32.19%,2012—2017年景观变化剧烈,土地流转频繁;景观类型的空间自然连通性增大,景观破碎化程度增大,景观异质性不断增强;研究期内草地、农田、林地ESV波动性减少,水体ESV波动性增加,其他用地ESV基本保持不变,生态系统服务功能总价值波动性减小.