生态与农村环境学报2025，Vol.41Issue(4)：460-472,13.DOI:10.19741/j.issn.1673-4831.2024.0343
黄土高原半干旱区流域产水功能时空变化特征
Characteristics of Spatial and Temporal Variations of Water Production Functions in the Semi-arid Watershed of the Loess Plateau
摘要
Abstract
Under the background of climate and land use change,it is of great significance to study the spatial-temporal characteristics and response of water production and analyze the spatial-temporal differentiation and variation trend of water production function in the Malian River Basin.Based on InVEST model,the temporal and spatial characteristics of water yield and the effects of land use type,elevation,precipitation,and actual evapotranspiration on water yield in Malian Riv-er Basin from 1990 to 2020 were quantitatively analyzed.The results show that:(1)The total water yield of the basin in 1990,2000,2010 and 2020 was 4.563×108,2.640×108,3.853×108 and 3.264×108 m3,respectively.The spatial pat-tern of water yield in different periods was basically the same,showing the spatial difference characteristics of high in downstream and low in upstream;The depth of water produced in the whole basin is mainly reduced,the significant reduc-tion area is concentrated in the middle and upper reaches,and the extremely significant reduction area is mainly in the middle and lower reaches.(2)The water production capacity of urban land,construction land and high coverage grassland was the strongest,while that of water area was the weakest.The higher the precipitation,the lower the altitude,the smal-ler the actual evapotranspiration and the lower the vegetation coverage,the stronger the water production capacity.(3)There was a significant positive correlation between water production and precipitation,and a negative correlation be-tween altitude and actual evapotranspiration.The order of influence degree of each influencing factor on water production was precipitation＞altitude＞actual evapotranspiration＞land use.(4)The southwest of the basin as a key functional area of water production should be planned for protection,while the northeast of the basin is a low-value area of water produc-tion,and human activities should be reduced to focus on protecting ecosystem stability and biodiversity.The spatial-tempo-ral pattern of water production in the Malian River Basin changed significantly from 1990 to 2020,and the precipitation factor is the main driving factor.关键词
产水功能/时空演变/空间格局/InVEST模型/黄土高原半干旱区Key words
water production function/spatial-temporal evolution/spatial pattern/InVEST model/the semi-arid area of the Loess Plateau分类
资源环境引用本文复制引用
高雅玉,胡玉沛,宋玉,郝建斌,李泽霞..黄土高原半干旱区流域产水功能时空变化特征[J].生态与农村环境学报,2025,41(4):460-472,13.基金项目
国家重点研发计划项目(2017YFC0504704) （2017YFC0504704）
甘肃省重点研发计划项目(22YF7FA165) （22YF7FA165）
高端外国专家引进计划项目(22JR10KA006) （22JR10KA006）
2022年陇原青年创新创业人才(团队)项目(甘组通字[2022]77号) （团队）
甘肃省水利科学试验研究及技术推广计划项目(甘水建管发[2023]67号,[2024]78号,[2025]24号) （甘水建管发[2023]67号,[2024]78号,[2025]24号）
兰州理工大学研究生课程思政示范项目(KCSZ-SF-202302606) （KCSZ-SF-202302606）
