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《资源与生态学报(英文版)》 2018-02
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The Impact of Spatial Heterogeneity on Ecosystem Service Value in a Case Study in Liuyang River Basin, China

WANG Mingkuan;MO Hongwei;Hunan University of Science and Technology;  
In previous studies the value of ecosystem services was evaluated microscopically by ecological indicators such as soil properties,biomass,carbon storage,oxygen release,water quality,and others.In this paper,the spatial heterogeneity of ecosystem services in Liuyang River basin was studied from the perspective of Geographic Information System(GIS)based spatial relationships by using a combination of geographic data and spatial analysis technologies.The Liuyang River basin was divided into grids with a resolution of 1km×1km.The weights of factors that affect the value of ecosystem services(such as topography,geological disasters,roads,scenic spots,vegetation coverage,and plant net primary productivity)were evaluated using the entropy method and analytic hierarchy process(AHP)in order to investigate the influence of natural and social factors on the value of ecosystem services in a quantitative manner.The results demonstrate that the value of ecosystem services is mainly affected by vegetation coverage,plant net primary productivity,and road network density.The value of ecosystem services grows with the increase in either vegetation coverage,plant net primary productivity,or road network density.Different types of land play different roles in ecosystem services.Cultivated land,grassland,and water each have significant supply and regulating functions while forest has significant regulating and supporting functions.The value of ecosystem services of cultivated land and water that are closely related to human activity is significantly influenced by spatial heterogeneity.In contrast,the effect of spatial heterogeneity on the value of ecosystem services of forest land and grassland that are located in mountains and hills,far away from the human accumulation zone,is insignificant.
【Fund】: The Natural Science Foundation of Hunan Province of China(2018JJ2115)
【CateGory Index】: P208;X171
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