Spatial variations in soil-water carrying capacity of three typical revegetation species on the Loess Plateau, China

doi:10.1016/j.agee.2018.12.008

	Spatial variations in soil-water carrying capacity of three typical revegetation species on the Loess Plateau, China
	Jia, Xiaoxu 1,2; Shao, Mingan 1,2; Yu, Dongxue 1,2; Zhang, Yu 3; Binley, Andrew 4
刊名	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
	2019-03-01
卷号	273 页码:25-35
关键词	Plant cover Carrying capacity Re-vegetated soil Biome-BGC model The Loess Plateau
ISSN号	0167-8809
DOI	10.1016/j.agee.2018.12.008
通讯作者	Shao, Mingan(shaoma@igsnrr.ac.cn)
英文摘要	Re-vegetation is a necessary control measure of soil erosion in the Loess Plateau. However, excessive re-vegetation can aggravate soil water shortage, which can in turn threaten the health and services of restored ecosystems. An optimal plant cover or biomass (i.e., soil-water carrying capacity for vegetation, SWCCV) is important for regional water balance, soil protection and vegetation sustainability. The objective of this study was to determine the spatial distribution of SWCCV for three non-native tree (Robinia pseudoacaia), shrub (Caragana korshinskii) and grass (Medicago sativa) species used in the re-vegetation of the Loess Plateau. The dynamics of actual evapotranspiration (AET), net primary productivity (NPP) and leaf area index (LAI) were simulated using a modified Biome-BGC (Bio-Geochemical Cycles) model. Soil and physiological parameters required by the model were validated using field-observed AET for the three plant species at six sites in the study area. The validated model was used to simulate the dynamics of AET, NPP and LAI for the three plant species at 243 representative sites in the study area for the period 1961-2014. The results show that spatial distributions of mean AET, NPP and LAI generally increased from northwest to southeast, much the same as mean annual precipitation (MAP) gradient. In terms of maximum LAI, the ranges of optimal plant cover were 1.1-3.5 for R. pseudoacaia, 1.0-2.4 for C. korshinskii and 0.7-3.0 for M. sativa. The corresponding SWCCV, expressed as NPP were 202.4-616.5, 83.7-201.7 and 56.3-253.0 g(-2) yr(-1). MAP, mean annual temperature, soil texture and elevation were the main variables driving SWCCV under the plant species; explaining over 86% of the spatial variations in mean NPP in the study area. Further re-vegetation therefore needs careful reconsideration under the prevailing climatic, soil and topographic conditions. The results of the study provide a re-vegetation threshold to guide future re-vegetation activities and to ensure a sustainable eco-hydrological environment in the Loess Plateau.
资助项目	National Key Research and Development Program of China[2016YFC0501605] ; National Natural Science Foundation of China[41530854] ; National Natural Science Foundation of China[41877016] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017076] ; UK Natural Environment Research Council[NE/N007409/1] ; Youth Innovation Research Team Project[LENOM2016Q0001]
WOS关键词	VEGETATION RESTORATION ; HYDRAULIC CONDUCTIVITY ; PLANT COVERAGE ; CARBON STOCKS ; MODEL ; EVAPOTRANSPIRATION ; AFFORESTATION ; PRECIPITATION ; BALANCE ; AVAILABILITY
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000468248000003
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; UK Natural Environment Research Council ; Youth Innovation Research Team Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/59552]
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, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 3.Hebei Normal Univ, Coll Resource & Environm Sci, Shijiazhuang 050024, Hebei, Peoples R China 4.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England
推荐引用方式 GB/T 7714	Jia, Xiaoxu,Shao, Mingan,Yu, Dongxue,et al. Spatial variations in soil-water carrying capacity of three typical revegetation species on the Loess Plateau, China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2019,273:25-35.
APA	Jia, Xiaoxu,Shao, Mingan,Yu, Dongxue,Zhang, Yu,&Binley, Andrew.(2019).Spatial variations in soil-water carrying capacity of three typical revegetation species on the Loess Plateau, China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,273,25-35.
MLA	Jia, Xiaoxu,et al."Spatial variations in soil-water carrying capacity of three typical revegetation species on the Loess Plateau, China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 273(2019):25-35.