Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2017.06.031 |
Temporal stability and variability of soil-water content in a gravel mulched field in northwestern China | |
Zhao, Wenju1; Cui, Zhen1; Zhang, Jiyi2; Jin, Jian1 | |
通讯作者 | Zhao, Wenju |
来源期刊 | JOURNAL OF HYDROLOGY |
ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2017 |
卷号 | 552页码:249-257 |
英文摘要 | Characterizing the spatiotemporal variability of soil-water content (SWC) is of paramount importance in many scientific fields and operational applications. We present a case study of the temporal stability and variability of SWC in a gravel-mulched field, a form of mulching that has been widely used by farmers on theloessial area of China for over 300 years, using Spearman correlation coefficients, frequency distributions and an index of temporal stability. SWC was measured weekly from May to August 2013 in the 010, 10-20, 20-30 and 30-50 cm layers. SWC was more variable in the surface soil, due to several environmental factors, and the variability gradually decreased with depth. A large sample size was needed for estimating the mean SWC of the field under dry conditions. High Spearman correlation coefficients between the SWCs measured on different sampling campaigns indicated a high temporal stability. The stability of the SWC spatial patterns over time and along the soil profile allowed us to identify a location representative of the field-mean SWC, with high coefficients of determination ranging between 0.8564 and 0.9325. The large-scale monitoring of SWC from few observations is thus feasible, which will aid the management of soil moisture in gravel-mulched fields in arid regions. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Gravel-mulched field Soil-water content Spatial variability Temporal stability Estimation |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000411541800020 |
WOS关键词 | MOISTURE VARIABILITY ; LAND-USE ; CONTROLLED ECOSYSTEMS ; HYDROLOGIC PROCESSES ; SPATIAL VARIABILITY ; SCALE VARIABILITY ; SEMIARID REGION ; ACTIVE-ROLE ; SAND MULCH ; SURFACE |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200588 |
作者单位 | 1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Wenju,Cui, Zhen,Zhang, Jiyi,et al. Temporal stability and variability of soil-water content in a gravel mulched field in northwestern China[J],2017,552:249-257. |
APA | Zhao, Wenju,Cui, Zhen,Zhang, Jiyi,&Jin, Jian.(2017).Temporal stability and variability of soil-water content in a gravel mulched field in northwestern China.JOURNAL OF HYDROLOGY,552,249-257. |
MLA | Zhao, Wenju,et al."Temporal stability and variability of soil-water content in a gravel mulched field in northwestern China".JOURNAL OF HYDROLOGY 552(2017):249-257. |
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