Study on the balance of ecological service supply and demand in Dongting Lake ecological economic zone
SHI Yishao;SHI Donghui;College of Surveying and Geo-Informatics, Tongji University;Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecological Economic Zone;
Based on the land cover types and land use status of Dongting Lake eco-economic zone, this paper revises the regional equivalence of ecosystem services value per unit area proposed by Gaodi Xie et al. And we calculated the equivalent value of ecological service function of supply function, regulation function, support function, cultural function and the total ecological services in the study area. According to the relevant provisions of national ecocounty, eco-city and eco-province construction index and per capita resource consumption, the value equivalent of each ecological service demand is obtained by combining the land area and resident population of each district within the region. According to the assessment results of the equivalent value of the supply of ecosystem services, we can obtain the supply-demand profitloss status of the regional ecosystem services. Research indicates that:(1) The overall supply and demand of various ecological functions and ecological services in the Dongting Lake ecoeconomic zone are in a good condition with the ratio of supply and demand being more than1.2;(2) There are differences in the supply and demand of various ecological functions within the region, which is listed as supporting service(1.46) regulating service(1.44) supplying service(1.39) cultural service(1.28);(3) The supply-demand ratio shows a distribution mode of areas with high values around it, but the supply and demand is relatively low in Jingzhou area on the north side of the region;(4) From the perspective of supply and demand of ecological services, the difference between urban and rural areas is significant. In this study, the supply-demand ratio analysis is limited to the boundaries of administrative divisions. The research on the natural boundary of spatial distribution based on supply and demand needs to be further strengthened.
【Fund】： 国家自然科学基金项目(414711114);; 洞庭湖生态经济区建设与发展湖南省协同创新中心
【CateGory Index】： X321
【CateGory Index】： X321