干旱区生态环境知识资源中心(Arid): Ecological effects of establishing a 40-year oasis protection system in a northwestern China desert

Arid

DOI	10.1016/j.catena.2019.104374
	Ecological effects of establishing a 40-year oasis protection system in a northwestern China desert
	Wang, Guohua 1,2; Munson, Seth M.3; Yu, Kailiang 4; Chen, Ning 5; Gou, Qianqian 1
通讯作者	Wang, Guohua
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	187
英文摘要	Oasis-protection systems are created globally to reverse land degradation in drylands and improve ecosystem condition. This study assessed the effects of a 40-year oasis-protection system on soil physicochemical and plant community properties along a gradient from prohibited grazing to fenced shrublands, to shrub- and tree plantation belts in arid northwestern China. We found that compared with shifting dunes in unprotected desert settings, the wind velocity and sand transportation rate decreased by 75 and 98% when spring storms passed through the most protected shrub- and tree- plantations in the oasis-protection system, respectively. The fraction of silt and clay content, and soil carbon, total nitrogen, and total phosphorus significantly increased along the protection gradient, and reached their highest levels at the most protected belts. Meanwhile, an annual herbaceous plant community developed, and the densities, covers, and biomasses of herbaceous plant species increased with soil nutrients along the gradient. However, a significant increase in soil salinity, sodicity, and desiccation occurred at the shrub- and tree plantation belts, and shrub and tree species introduced in the plantations failed to regenerate after 40 years. Our results demonstrate that the positive effects of oasis-protection systems need to be weighed against the long-term negative consequences of soil salt accumulation and desiccation that can occur in frequently used shrub- and tree plantations, which limits future plant regeneration and ecosystem recovery.
英文关键词	Desert-oasis ecotone Restoration Land degradation Soil nutrients Soil salinity Soil sodicity
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000514020400013
WOS关键词	HEXI CORRIDOR ; RIVER-BASIN ; SOIL ; WATER ; LAND ; DESERTIFICATION ; CARBON ; DROUGHT ; PLANT ; DEGRADATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	兰州大学 ; United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314229
作者单位	1.Shanxi Normal Univ, Coll Geog Sci, Linfen 041004, Shanxi, Peoples R China; 2.Chinese Acad Sci, Linze Inland River Basin Res Stn, Chinese Ecosyst Res Network, Key Lab Ecohydrol Inland River Basin,Northwest In, Lanzhou 730000, Peoples R China; 3.US Geol Survey, Southwest Biol Sci Ctr, Flagstaff, AZ 86001 USA; 4.Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA; 5.Lanzhou Univ, Coll Life Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guohua,Munson, Seth M.,Yu, Kailiang,et al. Ecological effects of establishing a 40-year oasis protection system in a northwestern China desert[J]. 兰州大学, United States Geological Survey,2020,187.
APA	Wang, Guohua,Munson, Seth M.,Yu, Kailiang,Chen, Ning,&Gou, Qianqian.(2020).Ecological effects of establishing a 40-year oasis protection system in a northwestern China desert.CATENA,187.
MLA	Wang, Guohua,et al."Ecological effects of establishing a 40-year oasis protection system in a northwestern China desert".CATENA 187(2020).