Dynamics of ecosystem services value in response to land use/land cover changes in Jiangsu Province

Land use data from 1990-2018 in Jiangsu Province were analyzed for temporal-spatial dynamics in land use / land cover changes and ecosystem services．Variations in ecosystem services induced by particular land use were revealed．Specifically, ArcGIS was applied for analysis of ecosystem service value equivalent correction, heat map clustering, EEL elasticity and IDW．From 1990, total areas of cropland, forestland, coastal wetland and river wetland in Jiangsu Province were found to have decreased gradually, but areas of lake wetland, unused land and construction land increased continuously．Cropland showed a maximum reduction of 9.23×10⁵ hm², construction land area showed a maximum increase of 8.59×10⁵ hm²．Areas of cropland and construction land in 2018 were 6.50×10⁶ hm² and 1.93×10⁶ hm², respectively．Total ecosystem service value in Jiangsu Province was found to have continuously increased from 1.61×10¹² yuan in 1990 to 1.68×10¹² yuan in 2018．Cropland, coastal wetland and lake wetland have been found to be critical to total ecosystem service value．The ecosystem service value of cropland, forest land, coastal wetland and river wetland were found to have decreased in the study period, but that of lake wetland and unused land have increased．Land use/land cover determined the elastic changes in ecosystem service values and affected total ecosystem service values．Land use type with high value coefficient was found to be more responsive to changes in land use/land cover．