陇东黄土高原生态系统服务权衡效应及其驱动因素  

Effects and driving factors of ecosystem service trade-offs in the Longdong Loess Plateau,China

作　　者：黄学煜 修丽娜 陆志翔 HUANG Xueyu;XIU Lina;LU Zhixiang(College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,Gansu,China;Key Laboratory of Resource Environment and Sustainable Development of Oasis,Gansu Province,Lanzhou 730070,Gansu,China;Key Laboratory of Ecohydrology of Inland River Basin/Gansu Qilian Mountains Ecology Research Center,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China)

机构地区：[1]西北师范大学地理与环境科学学院,甘肃兰州730070 [2]甘肃省绿洲资源环境与可持续发展重点实验室,甘肃兰州730070 [3]中国科学院西北生态环境资源研究院,内陆河流域生态水文重点实验室/甘肃省祁连山生态环境研究中心,甘肃兰州730000

出　　处：《干旱区地理》2025年第3期480-493,共14页Arid Land Geography

基　　金：甘肃省科技重大专项计划项目(21ZD4FA008)资助。

摘　　要：量化生态系统服务时空变化,探究生态系统服务的权衡效应及其影响因素,有利于促进区域生态功能恢复。以陇东黄土高原为例,基于InVEST模型对产水量、粮食供给、土壤保持和固碳4种重要生态系统服务进行评估,采用Sen+Mann-Kendall方法识别该地区2001—2020年生态系统服务时空变化趋势,运用相关系数和均方根偏差量化生态系统服务权衡效应,并利用地理探测器探究其驱动因素。结果表明:(1)近20 a陇东黄土高原产水量、粮食供给和土壤保持整体表现为不显著增加,固碳呈现显著增加态势。(2)生态系统服务间权衡效应在不同地区各有差异,产水量与粮食供给权衡关系主要集中在陇东黄土高原东南部,粮食供给与土壤保持权衡关系分布在陇东黄土高原南部,且权衡度有下降趋势,粮食供给与固碳权衡度有明显的上升趋势。(3)生态系统服务权衡效应受自然因素和人为因素共同作用,其中年降水量是关键的驱动因素。研究从生态系统服务权衡效应的角度为区域生态规划和改善生态系统服务质量提供了科学依据。Quantifying spatial and temporal changes in ecosystem services and analyzing trade-offs and influencing factors are essential for restoring regional ecological functions.This study focuses on the Longdong Loess Plateau of Gansu Province,China,evaluating four key ecosystem services:water yield,grain provision,soil conservation,and carbon sequestration.The assessment was conducted using the InVEST model,and the Sen+Mann-Kendall method was applied to analyze spatial and temporal change trends of ecosystem services from 2001 to 2020.Trade-off effects among ecosystem services were quantified through correlation analysis and root mean square deviation.Additionally,the geodetector method was used to explore the driving factors of these trade-offs.The findings indicated that:(1)Over the past 20 years,water yield,grain provision,and soil conservation in the Longdong Loess Plateau showed no significant increases,while carbon sequestration demonstrated a notable upward trend.(2)Trade-off effects among ecosystem services exhibited spatial variation.Trade-offs between water yield and grain provision were primarily concentrated in the southeastern region of the Longdong Loess Plateau,while trade-offs between grain provision and soil conservation were distributed in the southern region of the Longdong Loess Plateau,and the degree of trade-offs declined over time.The trends of the degree of trade-offs between grain provision and carbon sequestration showed significant regional increases.(3)The trade-off effects of ecosystem services were influenced by a combination of natural and human factors,with annual precipitation identified as the primary driver.This study provides a scientific basis for regional ecological planning and strategies to enhance ecosystem service quality by addressing trade-off effects.

关 键 词：趋势分析 权衡/协同 均方根偏差 地理探测器 陇东黄土高原 

分 类 号：F32[经济管理—产业经济]