Predication of soil water storage by spatial dependence in a deposited soil farmland

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Predication of soil water storage by spatial dependence in a deposited soil farmland
	Zhao, Pei 2; Shao, Mingan 1
刊名	AFRICAN JOURNAL OF AGRICULTURAL RESEARCH
	2011-08-04
卷号	6 期号:15 页码:3475-3482
关键词	Autocorrelation check-dam linear regression soil water content
ISSN号	1991-637X
通讯作者	Shao, MG
英文摘要	Spatial dependence was widely recognized in field observations and the existence was very helpful to the development of precision agriculture. On the Loess Plateau of China, the soil water contents (SWCs) at a deposited soil farmland (DF) were measured using the neutron tubes on two sampling lines during two years. The objectives of this research were to recognize their spatial dependence to predict soil water storage (SWS) and to divide the DF for future study in such kind farmland. The results showed that the mean SWCs of 0-80 cm soil depth decreased at the prior part and increased at the later part of the DF. The coefficient of variation (CV) decreased exponentially with the mean SWC on all observations. Estimated autocorrelation values began at higher value than critical criteria and gradually decreased towards negative values following the increased lag distance. The Moran's I and ACF both illustrate the existence of spatial correlation of neighboring points on the silting direction, and the cluster characteristics were used to predicate SWS and divide the DF. The topsoil water contents (10 cm) have a good linear relationship with its SWSs (80 cm) since the deposition characteristics of sediment. Three parts of DF should be divided in the related studies on such land. Future studies should focus on the spatial dependence of more soil variables at the DF to help the development of precision agriculture and manage soil resources.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Agriculture, Multidisciplinary
研究领域[WOS]	Agriculture
关键词[WOS]	LOESS PLATEAU ; VARIABILITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000298783500005
公开日期	2013-06-25
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5493]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Environm Evolvement & Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Pei,Shao, Mingan. Predication of soil water storage by spatial dependence in a deposited soil farmland[J]. AFRICAN JOURNAL OF AGRICULTURAL RESEARCH,2011,6(15):3475-3482.
APA	Zhao, Pei,&Shao, Mingan.(2011).Predication of soil water storage by spatial dependence in a deposited soil farmland.AFRICAN JOURNAL OF AGRICULTURAL RESEARCH,6(15),3475-3482.
MLA	Zhao, Pei,et al."Predication of soil water storage by spatial dependence in a deposited soil farmland".AFRICAN JOURNAL OF AGRICULTURAL RESEARCH 6.15(2011):3475-3482.