Richness and composition of herbaceous species in restored shrubland and grassland ecosystems in the northern Loess Plateau of China

	Richness and composition of herbaceous species in restored shrubland and grassland ecosystems in the northern Loess Plateau of China
	Jia, Xiaoxu 2; Shao, Mingan 1; Wei, Xiaorong 2
刊名	BIODIVERSITY AND CONSERVATION
	2011-12-01
卷号	20 期号:14 页码:3435-3452
关键词	Herbaceous Biodiversity Partial Canonical Correspondence Analysis Shrubland Grassland Variation Partitioning The Loess Plateau
文献子类	Article
英文摘要	Restored grasslands and shrublands are integral parts of the semi-natural landscape and are of major importance for biodiversity in the northern Loess Plateau. Determining the underlying factors that control the richness and composition of herbaceous species in restored grasslands and shrublands is urgently needed. Thus, the specific objective of this study was to evaluate the relative importance of soil, plant, and topographic explanatory variables affecting the richness and composition of herbaceous species in restored shrubland and grassland ecosystems in a typical watershed within the northern Loess Plateau. In this study, 27 restored grassland sites and 16 restored shrubland sites were sampled during September 2009. Using variation partitioning (partial canonical correspondence analysis), we determined the individual and shared effects of these three sets of explanatory variables on herbaceous biodiversity in the two restored habitats. Most of the explained variation in plant diversity was related to the pure effect of soil, plant, and topographic variables. Restored shrublands had significantly more species than grasslands, and abandoned dam farmlands had significantly more species than other grassland sites. Moreover, botanical diversity responded differently to the explanatory variables in different plant communities. The pure effects of soil properties, soil moisture in particular, accounted for the largest fractions of explained variation in species diversity in restored grasslands. Both plant and topographic variables had balancing pure effects on species diversity in restored shrublands, in particular the shrub density and slope angle. We conclude that the maintenance of a moderate density of shrubs (less than 3600 shrubs per ha), construction of check-dams, and grazing at a low stocking rate, taking conditions of soil and topographic site into account, may help to conserve biodiversity in the northern Loess Plateau.
WOS关键词	LAND-USE ; SPATIAL VARIABILITY ; PLANT-COMMUNITIES ; SOIL-WATER ; DIVERSITY ; MANAGEMENT ; STABILITY ; MOISTURE ; TOPOGRAPHY ; VEGETATION
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000297348600009
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/68067]
专题	中国科学院地理科学与资源研究所
通讯作者	Shao, Mingan
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.NW A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
推荐引用方式 GB/T 7714	Jia, Xiaoxu,Shao, Mingan,Wei, Xiaorong. Richness and composition of herbaceous species in restored shrubland and grassland ecosystems in the northern Loess Plateau of China[J]. BIODIVERSITY AND CONSERVATION,2011,20(14):3435-3452.
APA	Jia, Xiaoxu,Shao, Mingan,&Wei, Xiaorong.(2011).Richness and composition of herbaceous species in restored shrubland and grassland ecosystems in the northern Loess Plateau of China.BIODIVERSITY AND CONSERVATION,20(14),3435-3452.
MLA	Jia, Xiaoxu,et al."Richness and composition of herbaceous species in restored shrubland and grassland ecosystems in the northern Loess Plateau of China".BIODIVERSITY AND CONSERVATION 20.14(2011):3435-3452.