水利水电技术（中英文）2023，Vol.54Issue(12)：106-119,14.DOI:10.13928/j.cnki.wrahe.2023.12.009
荒漠湿地小流域土壤储水量季节变化特征研究
Study on seasonal variation characteristics of soil water in small basin of desert wetlands
摘要
Abstract
[Objective]Aiming at providing a scientific basis for the construction of ecological vegetation in small watersheds,the spatial and temporal patterns of soil water storage in desert wetland small basin were analyzed with the advantage of simulating long time series by SWAT model.[Methods]By constructing the SWAT model applicable to the desert wetland sub-basin,the change trend of soil water storage in the 0-2.5 m soil layer of Nanhai small basin was simulated to reveal the spatial and temporal change characteristics of soil water storage of different vegetation types and different soil types.[Results]Soil water storage in the watershed showed an upward and then downward trend from 2020 to 2022,and the monthly average soil water storage ranged from 25.95 to 103.66 mm.It fluctuated greatly in each month and showed an obvious positive correlation with precipitation.Soil water storage in the watershed had obvious spatial heterogeneity,and the overall soil water storage values of different vegetation types showed the overall soil water storage values of different vegetation types were shrubs＞trees＞herbs.[Conclusion]The result indi-cate that:Precipitation fluctuation is the primary factor causing soil water storage changes,and soil water storage has obvious sea-sonal changes with precipitation fluctuation.Soil water storage in the watershed shows a spatial trend of increasing from northwest to southeast,with grassland being the most sensitive to precipitation and woodland being the most stable to rainfall.The four soil types of meadow soil,wind-sand soil,yellow cotton soil and gray calcium soil show corresponding seasonal changes due to season-al fluctuation of rainfall.However,the response of different soil types to precipitation varies.By analyzing the characteristics of soil water storage changes in Nanhaizi desert wetland small basin,we can provide theoretical basis for the rational allocation of regional water resources in desert areas and guide the scientific vegetation restoration work in arid and semi-arid areas.关键词
土壤储水量/SWAT/时空变化/荒漠湿地/降水/水资源/小流域/干旱半干旱地区Key words
soil water/SWAT/spatio-temporal variation/desert wetlands/precipitation/water resources/small watershed/arid and semi-arid areas分类
生物学引用本文复制引用
王玥,王磊,王恩田,王朔,谢天麒,余殿..荒漠湿地小流域土壤储水量季节变化特征研究[J].水利水电技术（中英文）,2023,54(12):106-119,14.基金项目
国家重点研发计划项目(2021YFD1900600) （2021YFD1900600）
宁夏重点研发项目(2019BFG02022,2021BEG03008) （2019BFG02022,2021BEG03008）
宁夏领军人才项目(2021GKLRLX13) （2021GKLRLX13）
宁夏回族自治区西部一流学科建设项目(NXYLXK2017B06) （NXYLXK2017B06）
