基于PLUS模型的沙颍河流域生态系统服务价值评估  

Ecosystem Service Value Evaluation in the Shaying River Basin Based on the PLUS Model

作　　者：余显显 张官昊 周蒙蒙 余舒畅 杜一平 王晨宇 闫慧[1] YU Xianxian;ZHANG Guanhao;ZHOU Mengmeng;YU Shuchang;DU Yiping;WANG Chenyu;YAN Hui(College of Geography and Geomatics,Xuchang University,Xuchang 461000,China)

机构地区：[1]许昌学院地理与空间信息学院,河南许昌461000

出　　处：《许昌学院学报》2024年第5期31-36,共6页Journal of Xuchang University

基　　金：国家自然科学基金面上项目(42173062)。

摘　　要：为了揭示沙颍河流域生态系统服务价值(ESV),以沙颍河及其支流所流经的各地级市为研究区,利用PLUS(Patch-generating Land Use Simulation Model,PLUS)模型模拟不同情景下土地利用,采用当量因子法进行ESV评估.结果表明:2019年研究区用地类型以耕地为主,而建设用地面积明显增长;仅耕地保护情景下2029年ESV有所提高,表明耕地对ESV的主导作用;耕地和林地的生态价值变化度大于1,表明其对该流域ESV变化影响大.该研究为沙颍河流域生态保护和国土空间规划提供科学依据.To reveal the ecosystem service value(ESV)of the Shaying River Basin,this study focuses on the prefecture-level cities traversed by the Shaying River and its tributaries.Utilizing the Patch-generating Land Use Simulation(PLUS)Model,land use changes were extracted,and the land use status in 2029 was simulated under different scenarios:natural development,ecological protection,and cultivated land protection.Subsequently,the equivalent factor method was applied to assess the ESV in the Shaying River Basin.The key findings are as follows:In 2019,the basin was predominantly composed of cultivated land,accompanied by a noticeable increase in construction land.Notably,only under the cultivated land protection scenario does ESV in 2029 exhibit an increase compared to 2019,indicating the pivotal role of cultivated land in maintaining ESV.Furthermore,the degree of change in the ecological value for both cultivated land and forest land exceeds 1,indicating a considerably impact on ESV changes.These findings provide valuable scientific guidance for ecosystem conservation and territorial spatial planning in the Shaying River Basin.

关 键 词：沙颍河 PLUS模型 土地利用变化 生态系统服务价值 

分 类 号：X171.1[环境科学与工程—环境科学]