生态与农村环境学报2018，Vol.34Issue(4)：308-317,10.DOI:10.11934/j.issn.1673-4831.2018.04.003
三峡库区(重庆段)景观格局变化及其对生态系统服务价值的影响
Variation of Landscape Pattern and Its Influences on Ecosystem Service in Value in Three Gorges Reservoir Area (Chongqing Section)
摘要
Abstract
The Chongqing Section of the Three-Gorge Reservoir Area with important eco-geographical significance was hence selected as subject of study.The method of statistics and network analysis was applied with the Landsat TM Remote Sensing Data of the region dated from 2000 to 2015 to study variation of the landscape pattern and ecosystem service value from the spatio-temporal aspect and their relationship.Results show:(1) On the whole,cultivated land and forest land still accounted for a large portion,while the other fractions of landscape,like grassland,water surface and construction land,only for small portions,separately.However,the fraction of construction land expanded the fastest;(2) Temporally speaking,during the period from 2000 to 2015 the indices of patch density and largest patch area decreased first and came backwards,and the maximum value of Landscape aggregation index and the minimum value of Shanon's diversity index appeared in 2010;and the total ecosystem service value exhibited a rising and then falling trend,and peaked in 2010;(3) Spatially speaking,the center of landscape fragmentation shifted gradually from the northeast and southeast of the region to well-built areas of the districts and counties and the main urban zone and the index of landscape integrity gradually increased in the northeast and southeast;The areas low in ecosystem service value were concentrated in the well-built areas,and the main urban zone was the lowest and the area on the west of the Yangtze River was lower than that on the east.All the findings demonstrate that a reasonable landscape pattern is of great significance to increasing ecosystem service value of a place like the Three-Gorge Reservoir Area (Chongqing Section).关键词
景观格局/生态系统服务价值/时空变化/三峡库区(重庆段)Key words
landscape pattern/ecosystem service value/spatio-temporal variation/Three-Gorge Reservoir Area (Chongqing Section)分类
资源环境引用本文复制引用
吴娇,李月臣..三峡库区(重庆段)景观格局变化及其对生态系统服务价值的影响[J].生态与农村环境学报,2018,34(4):308-317,10.基金项目
国家自然科学基金(41571419) （41571419）
重庆市研究生科研创新项目(CYS17186) （CYS17186）
