气候变化领域集成服务门户(CCPortal): Ecological effects of desertification control and desertified land reclamation in an oasis-desert ecotone in an and region: A case study in Hexi Corridor, northwest China

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DOI	10.1016/j.ecoleng.2005.10.015
	Ecological effects of desertification control and desertified land reclamation in an oasis-desert ecotone in an and region: A case study in Hexi Corridor, northwest China
	Su, Yong Zhong; Zhao, Wen Zhi; Su, Pei Xi; Zhang, Zhi Hui; Wang, Tao; Ram, Raghuvanshi
发表日期	2007
ISSN	0925-8574
EISSN	1872-6992
卷号	29 期号:2
英文摘要	Desertification around oases is the major obstacle for sustainable development of oases in and regions of northwest China. An effective way of maintaining the stability of oases is to recover the relatively stable ecological zone between an oasis and desert from the destroyed ecological rift zone. This paper presents a typical case of successful efforts in ecological restoration and desertified land reclamation of oasis-desert ecotone. on the basis of stabilization of mobile dunes and agricultural use of reclaimed land, some successful techniques including established straw checkerboards and planting drought-tolerant indigenous shrubs, leveling sand dunes and drawing water for irrigation, closing dunes for grass reservation were carried out in 1975. In the restoration area, a stable artificial protective forest system had been developed. Pedological analyses indicate that the fine particle fraction (silt and clay content) in 0-10 cm soil surface layer has been increased from 2.6% on the untreated mobile sandy land to 9.3-37.3% in the restoration areas, and correspondingly, soil organic C has been increased from 0.63 to 1.88-9.70 g kg(-1) during the 28 years of restoration period. In these 28 years, a 10 cm depth of minero-organic topsoil in the irrigated Picea sylvestris forestland has been developed. It is also observed that sand transportation rate during sandstorm events has been significantly reduced. The increase of vegetation cover indicates a remarkable environmental improvement. Overall, the ecological restoration approach in this study is of practical significance for the rebuilding of rift zone ecosystem and maintenance of the stability of oasis in the and regions of northwest China. (c) 2005 Elsevier B.V All rights reserved.
关键词	oasis desertification soil development sand transportation rate transitional zone between oasis and desert arid area
学科领域	Environmental Sciences & Ecology; Engineering
语种	英语
WOS研究方向	Ecology ; Engineering, Environmental ; Environmental Sciences
来源期刊	ECOLOGICAL ENGINEERING
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/111489
推荐引用方式 GB/T 7714	Su, Yong Zhong,Zhao, Wen Zhi,Su, Pei Xi,et al. Ecological effects of desertification control and desertified land reclamation in an oasis-desert ecotone in an and region: A case study in Hexi Corridor, northwest China[J]. 中国科学院西北生态环境资源研究院,2007,29(2).
APA	Su, Yong Zhong,Zhao, Wen Zhi,Su, Pei Xi,Zhang, Zhi Hui,Wang, Tao,&Ram, Raghuvanshi.(2007).Ecological effects of desertification control and desertified land reclamation in an oasis-desert ecotone in an and region: A case study in Hexi Corridor, northwest China.ECOLOGICAL ENGINEERING,29(2).
MLA	Su, Yong Zhong,et al."Ecological effects of desertification control and desertified land reclamation in an oasis-desert ecotone in an and region: A case study in Hexi Corridor, northwest China".ECOLOGICAL ENGINEERING 29.2(2007).