Regional spatial pattern of deep soil water content and its influencing factors

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 研究生部

	Regional spatial pattern of deep soil water content and its influencing factors
	Wang, YQ(王云强) ; Shao, MA ; Liu, ZP ; Warrington, DN
刊名	HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
	2012
卷号	57 期号:2 页码:265-281
关键词	spatial variability land-use management geostatistics multiple linear regression residual maximum likelihood analysis Loess Plateau of China
通讯作者	Wang, YQ(王云强)
英文摘要	Plant root systems can utilize soil water to depths of 10 m or more. Spatial pattern data of deep soil water content (SWC) at the regional scale are scarce due to the labour and time constraints of field measurements. We measured gravimetric deep SWC (DSWC) at depths of 200, 300, 400, 500, 600, 800 and 1000 cm at 382 sites across the Loess Plateau, China. The coefficient of variation was high for soil water content (SWC) in the horizontal direction (48%), but was relatively small for SWC in the vertical direction (9%). Semivariogram ranges for DSWC at different depths were between 198 and 609 km. Kriged distribution maps indicated that deep soil layers became moister along northwest to southeast transects. Multiple statistical analyses related DSWC to plant characteristics (e. g. plant age explained >21% of the variability), geographical location and altitude (8-13%), soil texture and infiltrability, evaporation zone and eco-hydrological processes (P < 0.05). Regional land management decisions can be based on our DSWC distribution data to determine land uses and plant species appropriate for the soil type and location that would maintain a stable soil water balance. Maintaining infiltrability is of great importance in this and other water-scarce regions of the world.
收录类别	SCI
资助信息	National Natural Science Foundation of China 41071156 41101204;Chinese Academy of Sciences; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau 10501-278
语种	英语
公开日期	2013-03-07
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/27829]
专题	地理科学与资源研究所_研究生部
推荐引用方式 GB/T 7714	Wang, YQ,Shao, MA,Liu, ZP,et al. Regional spatial pattern of deep soil water content and its influencing factors[J]. HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES,2012,57(2):265-281.
APA	Wang, YQ,Shao, MA,Liu, ZP,&Warrington, DN.(2012).Regional spatial pattern of deep soil water content and its influencing factors.HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES,57(2),265-281.
MLA	Wang, YQ,et al."Regional spatial pattern of deep soil water content and its influencing factors".HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES 57.2(2012):265-281.