南水北调与水利科技Issue(4)：765-770,6.DOI:10.13476/j.cnki.nsbdqk.2015.04.035
不同下垫面的土壤水分时间稳定性分析
Temporal stability of soil water under different soil coverages
摘要
Abstract
Temporal stability is an im portant factor to analyze the spatial and temporal variability of soil water, so its study can provide reference for the prediction of local soil moisture, evaluation of water resources, and development of hydrology model-ling. According to the real-time monitoring of soil moisture data collected by EC-5 sensors in the hillslope scale of 2 m2 , the tem-poral stability of shallow soil water under four different vegetation covers ( spring maize, wheat, ryegrass, and bare land) were analyzed using the relative difference method and Spearman rand correlation coeff icient method. Result s show ed that the tempo-ral stability occurs in t he shallow soil water under different vegetable types and slopes w ith small MRD and standard deviation values at various soil depths. There w as no signif icant difference for the t em poral stability of soil w ater under different slopes, but obvious difference under different veget ation types. The temporal stability of soil w ater for maize and ryegrass w as obviously low er t han that of w heat and bare land wit h smaller MRD and standard deviat ion values.关键词
土壤水分/时间稳定性/植被类型/坡度/spearman 秩相关系数/相对差分法Key words
soil w ater/temporal stability/veget at ion type/slope/Spearman rand correlation coeff icient/relative difference分类
天文与地球科学引用本文复制引用
赵娜娜,李传哲,刘佳,穆文彬,于福亮,邢九平..不同下垫面的土壤水分时间稳定性分析[J].南水北调与水利科技,2015,(4):765-770,6.基金项目
水资源与水电工程科学国家重点实验室开放研究基金(2012B093) （2012B093）
中国水利水电科学研究院科研专项(1232) （1232）
国家自然科学基金(51209225 （）
51409270) （）
国家国际科技合作专项资助(2013DFG70990) （2013DFG70990）
