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Spatial and temporal variability of 0‐ to 5‐m soil–water storageat the watershed scale
Fu,ZH(Fu,Zihuan)1,2; Wang,YQ(Wang,Yunqiang)1,3; An,ZS(An,Zhisheng)1,3; Hu,W(Hu,Wei)4; Mostofa,KM.G(Mostofa,Khan M.G)2; Li,XZ(Li,Xuezhang)5; Liu,BX(Liu,Bingxia)6; Wang,Yunqiang
2018
发表期刊Hydrological Processes
卷号32期号:16页码:2557-2569
文章类型期刊论文
其他摘要Dynamic relationships among rainfall patterns, soil water distribution, and plant growth are crucial for sustainable conservation of soil and water resources in water‐limited ecosystems. Spatial and temporal variation in deep soil water content at a watershed scale have not yet been characterized adequately due to the lack of deep soil water data. Deep soil–water storage (SWS) up to a depth of 5 m (n = 73) was measured at 19 sampling occasions at the LaoYeManQu watershed on the Chinese Loess Plateau (CLP). At a depth of 0–1.5 m, the annual mean SWS was highly correlated with rain intensity, and the correlation decreased with depth, but within the layers at 1.5–5.0 m, the changes in SWS indicated a lag between precipitation and the replenishment of soil water. Geostatistical parameters of SWS were also highly dependent on depth, and the mean SWS presented similar spatial structures in two adjacent layers. Temporal stability of SWS as indicated by mean relative difference, standard deviation of the relative difference (SDRD), and mean absolute bias error (MABE) was significantly weaker at the shallow than at deeper layers. Soil separates and organic carbon content controlled the spatial pattern of SWS at the watershed scale. One representative location (Site 57) was identified to estimate the mean SWS in the 1‐ to 5‐m layer of the watershed. Semivariograms of the SDRD and MABE were best fitted by an isotropic spherical model, and their spatial distributions were depth‐dependent. Both temporal stability and spatial variability of SWS increased over depth. This study is helpful for deep SWS estimation and sustainable management of soil and water on the CLP, and for other similar regions around the world.
关键词Deep Soil Depth‐dependency Geostatistics Loess Plateau Soil–water Dynamics Temporal Stability
DOI10.1002/hyp.13172
收录类别SCI
所属项目编号2015KTZDNY01‐04 ; 41571130083 ; 41530854 ; 41471189
语种英语
项目资助者Coordination Innovation Project onShaanxi Province Science and Technology ; Coordination Innovation Project onShaanxi Province Science and Technology ; National Natural Science Foundation ofChina ; National Natural Science Foundation ofChina ; Youth InnovationPromotion Association CAS ; Youth InnovationPromotion Association CAS
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5362
专题生态环境研究室
通讯作者Wang,Yunqiang
作者单位1.State Key Laboratory of Loess andQuaternary Geology, Institute of EarthEnvironment, Chinese Academy of Sciences,Xi'an 710061, China
2.Institute of the Surface‐Earth System ScienceResearch, Tianjin University, Tianjin 300072,China
3.Interdisciplinary Research Center of EarthScience Frontier, Beijing Normal University,Beijing 100875, China
4.The New Zealand Institute for Plant & FoodResearch Limited, Private Bag 4704,Christchurch 8140, New Zealand
5.Institute of Subtropical Agriculture, ChineseAcademy of Sciences, Key Laboratory forAgro‐ecological Processes in SubtropicalRegion, Changsha 410125, China
6.Institute of Genetics and DevelopmentalBiology, Chinese Academy of Sciences, KeyLaboratory of Agricultural Water Resources,Center for Agricultural Resources Research,Shijiazhuang 050021, China
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GB/T 7714
Fu,ZH(Fu,Zihuan),Wang,YQ(Wang,Yunqiang),An,ZS(An,Zhisheng),等. Spatial and temporal variability of 0‐ to 5‐m soil–water storageat the watershed scale[J]. Hydrological Processes,2018,32(16):2557-2569.
APA Fu,ZH.,Wang,YQ.,An,ZS.,Hu,W.,Mostofa,KM.G.,...&Wang,Yunqiang.(2018).Spatial and temporal variability of 0‐ to 5‐m soil–water storageat the watershed scale.Hydrological Processes,32(16),2557-2569.
MLA Fu,ZH,et al."Spatial and temporal variability of 0‐ to 5‐m soil–water storageat the watershed scale".Hydrological Processes 32.16(2018):2557-2569.
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