| 引用本文: | 刘睿,范天虎,王科宇,等.山地小流域主导生态系统服务空间格局及其影响因素探究[J].灌溉排水学报,0,():-. |
| LIU Rui,FAN Tianhu,WANG Keyu,et al.山地小流域主导生态系统服务空间格局及其影响因素探究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】弥补山地小流域生态系统服务研究的不足，为澎溪河流域的综合治理与可持续发展提供科学支撑。【方法】采用InVEST模型评估了澎溪河流域的水源涵养与土壤保持服务，并基于地形起伏度与海拔划分了不同的地貌类型。随后，利用地理探测器深入探究了不同地貌类型下这些服务的主导影响因素及其相互作用。【结果】（1）水源涵养呈现南高北低的分布特征，低海拔台地水源涵养量最小，为239.52 mm/m2，小起伏中山区域最大，为591.00 mm/m2；而土壤保持则北高南低，随地貌梯度升高而增加。（2）土地利用类型及NDVI分别主导了水源涵养与土壤保持的变化，其中林地及草地区域表现尤为突出。【结论】在高地貌梯度地区，生态修复需综合考虑多种因素以提升水源涵养与土壤保持能力。 |
| 关键词: 生态系统服务;InVEST模型;地理探测器;澎溪河流域 |
| DOI： |
| 分类号:TV212.4；X171 |
| 基金项目:重庆市自然科学基金项目 (cstc2020jcyj-msxmX0521）；重庆市教委科学技术研究重大项目（KJZD-M202200502）；国家自然科学基金项目（42071217） |
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| Spatial Pattern and Factors Affecting of Dominant Ecosystem Services in Small Mountain Watershed |
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LIU Rui1, FAN Tianhu1, WANG Keyu1, XIAO He2
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1.College of Geography and Tourism,Chongqing Normal University;2.Chongqing Geographical Information and Remote Sensing Application Center
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| Abstract: |
| 【Objective】To address the research gap in ecosystem services of small mountainous watersheds and provide scientific support for comprehensive management and sustainable development of the Pengxi River Basin. 【Method】The InVEST model was used to evaluate the water conservation and soil conservation services in the Pengxi River Basin, and different geomorphic types were classified based on terrain undulation and altitude. Subsequently, the geographical detector was utilized to delve into the dominant influencing factors and their interactions of these functions in different landform types. 【Result】(1) The water conservation demonstrates a south-high-north-low distribution pattern, with the lowest capacity observed in low-altitude platforms (239.52 mm/m2) and the highest in small undulating middle mountains (591.00 mm/m2). In contrast, soil retention is higher in the north and lower in the south, escalating with the elevation of landforms gradients. (2) Land use types and NDVI are identified as the primary factors influencing water conservation and soil retention, respectively, with forest and grassland areas exhibiting particularly noteworthy performances. 【Conclusion】In areas with high landforms gradients, ecological restoration needs to comprehensively consider multiple factors to enhance water conservation and soil retention capabilities. |
| Key words: Ecosystem services; InVEST model; Geographic detectors; Pengxi River Basin |
