西北林学院学报2024，Vol.39Issue(1)：264-272,9.DOI:10.3969/j.issn.1001-7461.2024.01.35
2000-2020年山西省宁武县生态系统服务价值时空动态研究
Spatiotemporal Dynamics of Ecosystem Service Value in Ningwu County,Shanxi Province from 2000 to 2020
摘要
Abstract
The study on the spatiotemporal dynamics of ecosystem service value(ESV)is of great signifi-cance to the evaluation of ecological restoration projects,the accurate identification of ecological restoration space,and the construction of ecological security pattern.Ningwu County in Shanxi Province is not only the source of the Fenhe River,but also a typical coal resource county with an ecological rehabilitation experi-mental site.To investigate the spatiotemporal dynamics of ESV in Ningwu County,a study was conducted based on the land cover data(2000-2020).The ESV was quantified by the equivalent factor method.Mo-reover,the grid analysis method and hot spot analysis method were adopted to investigate the spatiotempo-ral evolution of ESV.The correlation analysis was conducted to assess the influencing factors of ESV.The main results were summarized as follows.1)The average annual ESV of Ningwu county was 1 690.324 1 million yuan from 2000 to 2020.In comparison with the ESV in 2000,the ESV in 2020 increased by 5.80％.Overall the ESV declined at the first three phases,then rose at the last phase.Noticeably,the four primary service function indicators increased in 2020,and the proportions were in the order of regulation service(20.23％)＞cultural service(18.63％)＞supporting service(18.36％)＞provisioning service(14.56％).2)The similar clumped patterns of the total spatial distribution of ESV were observed in 14 townships with the highest values in the mountainous areas,and the lowest values in the watersheds of the Fenhe River and the Huihe River.3)From 2000 to 2020,the cold spots and hot spots of ESV change ac-counted for 10.14％and 9.30％,respectively.Specifically,the cold spots were mainly distributed in the middle of the watersheds of the Fenhe River and the Huihe River,while the hot spots were distributed in the middle east of the county,which should be taken seriously during ecological rehabilitation.Moreover,the proportion of hot spots indicated a growing trend,indicating that the ecological functions of all kinds ecological rehabilitation projects gradually rose.4)The correlation analysis indicated that coniferous for-est,shrub,shrub and herb,and wetland were significant for elevating ESV in Ningwu County.Among the natural factors,slope,elevation and precipitation were significantly and positively correlated with ESV.关键词
生态系统服务价值/价值当量因子/网格分析法/热点分析法/宁武县Key words
ecosystem service value/value equivalent factor/grid analysis/hot spot analysis/Ningwu County分类
农业科技引用本文复制引用
王茹,张先平,张晓玲,张抗萍,郝凯婕,李晓迪..2000-2020年山西省宁武县生态系统服务价值时空动态研究[J].西北林学院学报,2024,39(1):264-272,9.基金项目
国家林业和草原局科技项目(2020131015) （2020131015）
山西省重点研发计划项目(201903D221064). （201903D221064）
