Soil water dynamics and deep soil recharge in a record wet year in the southern Loess Plateau of China

ISWC OpenIR > 水保所知识产出(1956---)

	Soil water dynamics and deep soil recharge in a record wet year in the southern Loess Plateau of China
	Liu Wenzhao; Zhang X. -C.; Dang Tinghui; Liu, W
	2010
发表期刊	AGRICULTURAL WATER MANAGEMENT
卷号	97 期号:8 特刊: SI 页码:1133-1138
摘要	Terrestrial water cycles are influenced by hydrologic and textural properties of the deep loess layer in the Loess Plateau. Analyses of soil water profile distributions are needed to understand the regional water cycle processes and to guide agricultural production and sustainability. The objective of this study was to quantify the extent of deep soil water recharge and soil water profile dynamics during 1987-2003, especially in a record wet year of 2003, in common cropping systems in a semiarid-subhumid region of the southern Loess Plateau. The Chinese Ecological Research Network (CERN) site and a long-term rotation experiment site in a flat tableland were selected for this study. Soil moisture profiles were measured by a neutron probe to a depth of 6 m in 2003. The precipitation of 954 mm at the Changwu County Meteorological Station in 2003 was 63.4% higher than the long-term average (584 mm), and was a record high since 1957. Although cropping systems affected deep soil water recharge, the persistent dry soil layer formed between 2- and 3-m depths in croplands, resulting from many years of intensive cropping, was fully replenished in all cropping systems in 2003. Further frequency analysis indicated that the desiccated layer between 2- and 3-m depths would be fully recharged at least once in about 10 years for all existing cropping systems excluding continuous alfalfa. This finding should alleviate concerns about the formation of a permanent deep-soil desiccation layer as well as its potential impact on the long-term sustainability of the existing intensive cropping systems in the region. (C) 2010 Elsevier B.V. All rights reserved.
关键词	Soil Water Recharge Eco-hydrology Loess Plateau Dryland Farming
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4762
专题	水保所知识产出(1956---)
通讯作者	Liu, W
推荐引用方式 GB/T 7714	Liu Wenzhao,Zhang X. -C.,Dang Tinghui,et al. Soil water dynamics and deep soil recharge in a record wet year in the southern Loess Plateau of China[J]. AGRICULTURAL WATER MANAGEMENT,2010,97(8 特刊: SI):1133-1138.
APA	Liu Wenzhao,Zhang X. -C.,Dang Tinghui,&Liu, W.(2010).Soil water dynamics and deep soil recharge in a record wet year in the southern Loess Plateau of China.AGRICULTURAL WATER MANAGEMENT,97(8 特刊: SI),1133-1138.
MLA	Liu Wenzhao,et al."Soil water dynamics and deep soil recharge in a record wet year in the southern Loess Plateau of China".AGRICULTURAL WATER MANAGEMENT 97.8 特刊: SI(2010):1133-1138.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
第128条.pdf（572KB）			开放获取	使用许可	浏览下载