基于土地利用变化的生态系统服务价值时空演变——以榆林市定边县为例  

Spatiotemporal Variation of Ecosystem Service Value Based on Land-use Change:Taking Dingbian County of Yulin City as an Example

作　　者：叶佩瑄 谢晓玲[1] YE Peixuan;XIE Xiaoling(School of Architecture and Urban Planning,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学建筑与城市规划学院,兰州730070

出　　处：《科技和产业》2025年第5期54-60,共7页Science Technology and Industry

基　　金：甘肃省科技厅软科学专项(24JRZA101)。

摘　　要：土地利用变化是全球变化的重要组成部分,对生态系统服务价值有着深远影响。以榆林市定边县为例,基于2010年、2015年、2020年的土地利用数据,运用土地利用转移矩阵对研究区土地利用结构、转移和强度变化特征进行时间与空间上的分析。采用当量因子法对生态系统服务价值的变化进行评估,并利用Arcgis空间分析研究其空间分布特征。研究表明:定边县主要的用地类型为耕地和草地,其中耕地与草地的面积在持续减少,水域和建设用地的面积在不断增加,单一土地利用类型的变化程度具体表现为水域>建设用地>湿地>草地>耕地>林地>未利用地;定边县2010—2020年ESV(生态系统服务价值)总体呈现上升趋势,2020年较2010年增加了1.81亿元,其中水域的ESV增量较为显著,耕地和草地的ESV减少较多。从单项ESV来看以气候调节与水文调节为主。Land-use change is an important part of global change and has a profound impact on the value of ecosystem services.Based on the land use data of 2010,2015 and 2020 in Dingbian County of Yulin City,the time and space was analyzed,the change of ecosystem service value was evaluated by equivalent factor method,and the spatial distribution characteristics was studied by Arcgis spatial analysis.The results show that the main land types in Dingbian County are cultivated land and grassland,in which the area of cultivated land and grassland is continuously decreasing,and the area of water area and construction land is increasing,and the degree of change of single land use type is shown as follows:water>construction land>wetland>grassland>woodland>cultivated land>unused land.ESV(ecosystem service value)from 2010 to 2020,2020 increased by 181 million yuan over 2010,in which the ESV increment of water is more significant,and the ESV of cultivated land and grassland decreases more.From the perspective of individual ESV,climate regulation and hydrological regulation are mainly used.

关 键 词：生态系统服务价值(ESV) 当量因子法 土地利用变化 定边县 

分 类 号：S181[农业科学—农业基础科学]