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DOI	10.1006/jare.2001.0928
	Soil water and chemical characteristics of sandy soils and their significance to land reclamation
	Feng, Q; Kunihiko, E; Cheng, GD
发表日期	2002
ISSN	0140-1963
EISSN	1095-922X
起始页码	35
结束页码	54
卷号	51 期号:1
英文摘要	Long-term observations were made of moisture and chemical content changes in sandy soils at ten locations in China, located in five different climatic zones: hyperarid, arid, semi-arid, sub-humid and subtropical humid. These sandy soil zones were delineated based on their bioclimatic characteristics, aridity, mean soil moisture content and precipitation. Spatial and temporal variations in soil moisture and water balance components of the top 1 m soil layer were monitored in different sandy soils. The water balance equation for the top 1 m soil layer was defined as: DeltaS = (P+M)-E in the hyperarid and and areas, DeltaS= (P+U)-(D+E+T-R) in the semi-arid areas, and DeltaS+DeltaV = (P+U)-(D+E+T-R) in the semihumid and subtropical humid areas. Sandy soil organic matter content (OMC), CaCO3, and soluble salts content were also investigated. Afforestation and a selection of land management techniques are suggested to slow or stop the development and expansion of sandy lands. In China, four land management regions, defined by the prevailing natural conditions and complexity of reclamation/mitigation techniques implemented are: Region I: trees and shrubs to fix shifting sands, land can then be used for high-profit agriculture and commercial crops; Region II: some species of shrub plants and grasses to fix shifting sands; Region III: mechanical methods to enhance biological methods to fix shifting sands; Region IV: improvement of afforestation practices, and stabilization of low-lying wetland sites, engineering works, and irrigation systems. The results of such programs have important implications in terms of the economic benefits of irrigated agriculture and environment of sandy lands in China. (C) 2002 Elsevier Science Ltd.
英文关键词	sandy soils; moisture characteristics; sand fixation; afforestation; benefits of irrigation
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS关键词	ELECTRICAL-CONDUCTIVITY
WOS记录号	WOS:000176620600003
来源期刊	JOURNAL OF ARID ENVIRONMENTS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239411
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; Nihon Univ, Coll Humanities & Sci, Dept Geosci Syst, Setagaya Ku, Tokyo 1568550, Japan
推荐引用方式 GB/T 7714	Feng, Q,Kunihiko, E,Cheng, GD. Soil water and chemical characteristics of sandy soils and their significance to land reclamation[J]. 中国科学院西北生态环境资源研究院,2002,51(1).
APA	Feng, Q,Kunihiko, E,&Cheng, GD.(2002).Soil water and chemical characteristics of sandy soils and their significance to land reclamation.JOURNAL OF ARID ENVIRONMENTS,51(1).
MLA	Feng, Q,et al."Soil water and chemical characteristics of sandy soils and their significance to land reclamation".JOURNAL OF ARID ENVIRONMENTS 51.1(2002).