不同格网尺度下生态系统服务价值空间分异及影响因素分析--以秦岭西安段为例  

Spatial difference of ecological services and its influencing factors under different scales-Taking the Xi′an section of Qinling Mountains as an example

作　　者：马超群[1,2] 弋志强 员学锋 张硕蒙[1] 张莎莎 Ma Chaoqun;Yi Zhiqiang;Yuan Xuefeng;Zhang Shuomeng;Zhang Shasha(School of Land Engineering,Chang′an University,Xi′an 710064,China;Shaanxi Povincial Key Laboratoryof Land Renovation,Xi′an 710064,China)

机构地区：[1]长安大学土地工程学院,西安710064 [2]陕西省土地整治重点实验室,西安710064

出　　处：《水土保持研究》2025年第1期389-399,共11页Research of Soil and Water Conservation

基　　金：国家自然科学基金秦岭专项(72349002);国家自然科学基金项目(42371210);陕西省重点研发项目(2022ZDLSF07-05);陕西省土地整治重点实验室开放资助项目(211927180168);长安大学中央高校资助项目(300102354204)。

摘　　要：[目的]探究生态系统服务价值空间分异的尺度效应,为秦岭地区的生态保护和经济发展决策提供参考。[方法]运用改进当量因子法,计算了2020年秦岭西安段5 km,3 km,2 km,1 km和0.5 km共5个格网尺度水平上的生态系统服务价值;采用空间自相关分析和冷热点分析归纳了不同尺度下地均ESV空间分异特征;并利用地理探测器对各尺度下的影响因素作用强度进行定量分析。[结果](1)地均ESV总体上呈北低南高的分布格局,具有小分散、大集聚的空间分布特征,并随尺度降低,其局部越丰富,但整体性降低;(2)2 km尺度适合进行宏观分析和做整体性布局规划,1 km尺度适合进行水域变化对区域ESV影响的研究;(3)格网尺度越小,各影响因素内部差异增加,其整体性特征减少,局部特征差异凸显,空间分异性增强;(4)人类活动带来的土地利用方式转变显著影响区域生态系统服务价值,多因素耦合作用显著影响区域地均ESV空间分异,随尺度降低,其影响减弱。[结论]秦岭西安段的生态保护要重点关注区域土地利用性质的转变,可继续加强退耕还林政策,管控建设用地的规模,在兼顾生态保护的基础上,制定经济发展的布局规划。[Objective]The aims of this study are to explore the scale effect of spatial differentiation of ecosystem service value,and to provide reference for ecological protection and economic development decision-making in the Qinling Mountains region.[Methods]The ecosystem service value of the Xi′an section of the Qinling Mountains in 2020 was calculated with the improved equivalent factor method at five grid scale levels:5 km,3 km,2 km,1 km,and 0.5 km.The spatial differentiation characteristics of ground average ESV at different scales was analyzed with the spatial autocorrelation analysis and cold hot spot analysis.The intensity of the influencing factors at various scales was quantitatively analyzed with geographic detectors.[Results](1)The overall distribution pattern of ground average ESV was low in the north and high in the south with small dispersion and large agglomeration,and the local ESV became more abundant,while the overall ESV decreased with the scale decreasing.(2)The 2-km scale was suitable for macro analysis and overall layout planning,while the 1-km scale was suitable for studying the impact of water changes on regional ESV.(3)The smaller the grid scale,the greater the internal differences among various influencing factors,resulting in a decrease in overall features,highlighting local feature differences,and enhancing spatial differentiation.(4)The transformation of land use caused by human activities significantly affected the value of regional ecosystem services,and the coupling effect of multiple factors significantly affected the spatial differentiation of regional average ESV.As the scale decreased,its impact weakened.[Conclusion]The ecological protection of the Xi′an section of the Qinling Mountains should focus on the transformation of regional land use nature.The policy of returning farmland to forests should be further strengthened,and the scale of construction land should be controlled.On the basis of considering ecological protection,economic development layout planning can be formulated

关 键 词：生态系统服务价值 空间分异 地理探测器 多尺度 秦岭西安段 

分 类 号：F301.2[经济管理—产业经济]