摘要
生态系统服务与人类可持续发展紧密相连,研究区域生态系统服务供需特征,了解其空间匹配状况是实现生态资源有效配置和推动区域生态安全的重要前提。基于多源数据,在InVEST模型、ArcGIS和GeoDA软件的支撑下,分析疏勒河流域产水服务、固碳服务、食物服务供需特征和空间匹配状况。结果表明:(1)除产水服务外,疏勒河流域其他各项生态系统服务供给均大于需求,但不同区域和生态系统服务间存在差异。(2)疏勒河流域综合服务供需比为0.063,不同生态系统服务的供需比由高到低依此为:固碳服务(0.1854)、食物服务(0.0078)和产水服务(-0.0043)。(3)产水服务和固碳服务空间匹配类型都主要以低高型空间错位和高低型空间错位为主,食物服务空间匹配类型主要以低低型空间匹配为主,其中产水服务的空间匹配错位现象最严重。
Ecosystem services are closely linked to sustainable human development.Studying the supply and demand characteristics of regional ecosystem services and comprehending their spatial matching status are essential prerequisites for achieving the efficient allocation of ecological resources and promoting regional ecological security.The water production,carbon sequestration,and food services of the Shule River Basin in the Gansu Province of China were all examined on the basis of multisource data and with the assistance of the InVEST model as well as the ArcGIS and GeoDA software.The following are the results of this study:(1)There are discrepancies between different regions and ecosystem services;except for water production services,the supply of other ecosystem services in the Shule River Basin is more than the demand.(2)The supply-demand ratio of comprehensive services in the Shule River Basin is 0.063,and the supply-demand ratios of different ecosystem services are carbon sequestration services(0.1854)>food services(0.0078)>water production services(−0.0043).(3)Water production and carbon sequestration service spaces are mainly based on low-high-type and high-low-type spatial dislocation,respectively,whereas food service spaces are primarily based on low-low-type spatial matching,among which the spatial mismatch of water production services is the most severe.
作者
周凡
周冬梅
金银丽
马静
杨静
朱小燕
张军
ZHOU Fan;ZHOU Dongmei;JIN Yinli;MA Jing;YANG Jing;ZHU Xiaoyan;ZHANG Jun(College of Management,Gansu Agricultural University,Lanzhou 730070,Gansu,China;College of Resources and Environment,Gansu Agricultural University,Lanzhou 730070,Gansu,China;Research Center for Water-Saving Agriculture in Gansu Province,Lanzhou 730070,Gansu,China;State Key Laboratory of Aridland Crop Science,Lanzhou 730070,Gansu,China)
出处
《干旱区地理》
CSCD
北大核心
2023年第3期471-480,共10页
Arid Land Geography
基金
甘肃省高等学校创新基金(2021A-061)
甘肃省自然科学基金(21JR7RA811)
甘肃省林业和草原科技创新计划(LCKJCX202-205)资助。
关键词
生态系统服务
供需关系
空间匹配
疏勒河流域
ecosystem services
relationship between supply and demand
spatial matching
Shule River Basin