遵义市土地利用变化及其生态系统服务价值

Land Use Change and Its Ecosystem Service Value in Zunyi City

生态系统服务价值是土地利用和生态修复相关规划及实施效果的重要指标。基于遵义市2009—2019年土地利用数据的解译结果,建立了土地利用转移矩阵,采用当量因子法估算遵义市生态系统服务价值(ESV),并以年度净初级生产力(NPP)对遵义市生态系统服务价值进行空间修正,探究了遵义市土地利用变化及其生态系统服务价值的时空变化特征。结果表明:研究期内遵义市林地、水域、园地面积明显增加,耕地面积减少;遵义市生态系统服务价值总量由2009年的674.77亿元上升至2019年的785.68亿元,退耕还林对生态系统服务功能提升具有积极作用;根据生态系统服务价值ESV与GDP之间的关系将遵义市县区划分为4种生态经济类型。该研究成果对遵义市国土空间生态修复规划具有指导意义。

Ecosystem service value(ESV) is an important indicator of planning and implementation effects related to land use and ecological restoration.Based on the remote sensing interpretation results of land use data in Zunyi City from 2009 to 2019,a land transition matrix was established, the ESV was estimated using the equivalent factor method, and the annual net primary productivity(NPP) was used to spatially correct the ESV,and the land use change and the spatial and temporal change characteristics of the ESV in Zunyi City were explored.The results are as follows: the area of forest land, water area and orchard in Zunyi increased significantly and the area of cultivated land decreased between 2009 and 2019;the total ecological service value increased from 67.477 billion yuan in 2009 to 78.568 billion yuan in 2019,and restoring agricultural land to forest had a positive effect on the improvement of ecological service function;according to the relationship between the ESV and the GDP of Zunyi City, the counties of Zunyi City were divided into four types of ecological economy.The research results have guiding significance for Zunyi’s land spatial ecological restoration planning.