Spatial heterogeneity and driving mechanisms of water yield service in the Hengduan Mountain region
DAI Erfu1,2, WANG Yahui,1,21. Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China 2. University of Chinese Academy of Sciences, Beijing 100049, China
National Basic Research Program of China.2015CB452702 National Natural Science Foundation of China.41571098 National Natural Science Foundation of China.41530749 National Key R&D Program of China.2017YFC1502903 Major Consulting Project of Strategic Development Institute, Chinese Academy of Sciences.Y02015003
作者简介 About authors 戴尔阜(1972-),男,甘肃平凉人,博士,研究员,主要从事土地利用与气候变化对生态系统的影响研究E-mail:daief@igsnrr.ac.cn。
Abstract Ecosystem services, which include water yield services, have been incorporated into decision processes of regional land use planning and sustainable development. Spatial pattern characteristics and identification of factors that influence water yield are the basis for decision making. However, there are limited studies on the driving mechanisms that affect the spatial heterogeneity of ecosystem services. In this study, we used the Hengduan Mountain region in Southwest China, with obvious spatial heterogeneity, as the research site. The water yield module in the InVEST software was used to simulate the spatial distribution of water yield. Also, quantitative attribution analysis was conducted for various geomorphologic and climatic zones in the Hengduan Mountain region by using the geographical detector method. Influencing factors, such as climate, topography, soil, vegetation type, and land use type and pattern, were taken into consideration for this analysis. Four key findings were obtained. First, water yield spatial heterogeneity are influenced most by climate-related factors, among which precipitation and evapotranspiration are the dominant factors. Second, the relative importance of each impact factor to the water yield heterogeneity differs significantly by geomorphologic and climatic zones. In flat areas, the influence of evapotranspiration is higher than that of precipitation. As relief increases, the importance of precipitation increases and eventually, it becomes the most important factor. Evapotranspiration is the most important factor in a plateau climatic zone, while in the mid-subtropical zone, precipitation is the main controlling factor. Third, land use type is also an important driving force in flat areas. Thus, more attention should be paid to urbanization and land use planning, which involves land use changes, to mitigate the impact on water yield spatial pattern. The fourth finding was that a risk detector showed that Primarosol and Anthropogenic soil areas, shrub areas, and areas with slopes <5° and 25°-35° should be recognized as water yield important zones, while the corresponding elevation values are different in different geomorphologic and climatic zones. Therefore, the spatial heterogeneity and influencing factors in different zones should be fully considered in planning the maintenance and protection of water supply services in the Hengduan Mountain region. Keywords:water yield service;InVEST software;geographical detector;attribution analysis;the Hengduan Mountain region
PDF (4729KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 戴尔阜, 王亚慧. 横断山区产水服务空间异质性及归因分析. 地理学报[J], 2020, 75(3): 607-619 doi:10.11821/dlxb202003012 DAI Erfu. Spatial heterogeneity and driving mechanisms of water yield service in the Hengduan Mountain region. Acta Geographica Sinice[J], 2020, 75(3): 607-619 doi:10.11821/dlxb202003012
Tab. 2 表2 表2不同地貌、气候类型区产水服务空间影响因子交互作用探测 Tab. 2The dominant interactions between two driving factors in different climatic and geomorphologic zones in Hengduan Mountain region
Tab. 3 表3 表3横断山区不同分区产水服务重要区识别 Tab. 3Identification of water yield important areas in different climatic and geomorphologic zones in Hengduan Mountain region
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