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	Long-term impacts of shrub plantations in a desert-oasis ecotone: Accumulation of soil nutrients, salinity, and development of herbaceour layer
	Yu, Kailiang1; Wang, Guohua2,3
刊名	LAND DEGRADATION & DEVELOPMENT
	2018-08-01
卷号	29期号:8页码:2681-2693
关键词	drylands ecosystem restorations herbaceous development shrub plantations soil salinity
ISSN号	1085-3278
DOI	10.1002/ldr.3009
通讯作者	Wang, Guohua(gimi123@126.com)
英文摘要	This study used a 40-year chronosequence of Haloxylon ammodendron plantations to evaluate its impacts on soil and vegetation conditions in a desert-oasis ecotone with extremely low annual precipitation (approximate to 100mm). We found that the fraction of silt and clay contents significantly increased from 6.4% and 5.1% in Year0 to 22-23.3% and 15.8-18% in the 40-year-old plantation in the soil depths of 0-10and 10-20cm, respectively. Soil nutrients (i.e., soil organic matter, total nitrogen, and total phosphorus) were significantly improved after H.ammodendron plantations. However, there was a significant increase in soil salinity, which may negatively affect sustainability of ecosystem restorations in future (drier and warmer) climate. Planted H.ammodendron established and thrived in the first 25years, but the percent vegetation cover started to decrease afterwards because of reduction in deep soil moisture and less access to groundwater. By comparison, herbaceous plants gradually developed after H.ammodendron plantations and finally dominated the ecosystems with high density (300-400herbs m(-1)), cover (25-30%), and biomass (50-60x10(-3)kgm(-2)) after 30-40years. These results suggest that although introduced shrubs can act as nurse plants to improve vegetation and soil conditions, their dominance could be a transient state. Thus, evaluation of ecosystem restoration through plantations should use long-term data, and the stable plant restorations for years or even decades could be a transient state and does not necessarily suggest a successful revegetation effort in the long run. Further, its environmental consequences (i.e., soil salinity) of shrub plantations need to be evaluated in ecosystem restorations especially in a changing and harsh environment.
收录类别	SCI
WOS关键词	ALTERNATIVE STABLE STATES ; HORQIN SAND LAND ; TENGGER DESERT ; HALOXYLON-AMMODENDRON ; NORTHERN CHINA ; WIND EROSION ; VEGETATION DYNAMICS ; SEED-GERMINATION ; INNER-MONGOLIA ; NURSE PLANTS
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
WOS类目	Environmental Sciences ; Soil Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000441249100038
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557753
专题	寒区旱区环境与工程研究所
通讯作者	Wang, Guohua
作者单位	1.Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA 2.Shanxi Normal Univ, Coll Geog Sci, Linfen 041004, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yu, Kailiang,Wang, Guohua. Long-term impacts of shrub plantations in a desert-oasis ecotone: Accumulation of soil nutrients, salinity, and development of herbaceour layer[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(8):2681-2693.
APA	Yu, Kailiang,&Wang, Guohua.(2018).Long-term impacts of shrub plantations in a desert-oasis ecotone: Accumulation of soil nutrients, salinity, and development of herbaceour layer.LAND DEGRADATION & DEVELOPMENT,29(8),2681-2693.
MLA	Yu, Kailiang,et al."Long-term impacts of shrub plantations in a desert-oasis ecotone: Accumulation of soil nutrients, salinity, and development of herbaceour layer".LAND DEGRADATION & DEVELOPMENT 29.8(2018):2681-2693.

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