[Temporal and spatial variation of ecosystem service value and its response to landscape pattern change in Guizhou Province, China]

Abstract

Guizhou Province is a test area of ecological civilization in China, and one of the most typical areas of karst landform development in the world. Exploring the change of ecosystem service value and its spatial correlation distribution characteristics with landscape pattern is conducive to formulating ecological environment improvement and protection measures according to local conditions. We analyzed the spatial and temporal variations of landscape pattern and ecosystem services in Guizhou Province from 2005 to 2018 and constructed a geographically weighted regression model to explore the spatial changes of their correlation coefficients. The results showed that the transfer of landscape types in Guizhou Province from 2005 to 2018 mainly occurred in the five landscapes of construction land, forest, water, grassland, and cropland. The landscape fragmentation and diversity increased. The value of ecosystem services was increasing year by year. Forests were the main contributors to the value of ecosystem services in Guizhou Province, with regulation services as the main ecosystem services. For high-value landscape types, the increase of diversity and the reduction of fragmentation were conducive to the increases of ecosystem service value. In the area with concentrated low-value landscape types, it showed the opposite effect. The direction of landscape transfer and the spatial distribution of diversity and fragmentation of different landscape types should be adjusted according to the characteristics of ecological environment in different regions of Guizhou Province, to realize the increases of ecosystem service value.

Keywords: ecosystem service; karst landform area; landscape pattern; landscape type transfer.