Factors Affecting Soil Desiccation Spatial Variability in the Loess Plateau of China

doi:10.2136/sssaj2017.11.0391

	Factors Affecting Soil Desiccation Spatial Variability in the Loess Plateau of China
	Zhao, Chunlei 1,2; Shao, Ming'an 1,2; Jia, Xiaoxu 1,2; Zhu, Yuanjun 3,4
刊名	SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
	2019-03-01
卷号	83 期号:2 页码:266-275
ISSN号	0361-5995
DOI	10.2136/sssaj2017.11.0391
通讯作者	Jia, Xiaoxu(jiaxx@igsnrr.ac.cn)
英文摘要	Soil desiccation has occurred widely across the Loess Plateau (LP) of China because of excessive depletion of soil water by artificial ecosystems and limited long-term rainfall recharge. This may lead to soil degradation and failure of afforestation efforts, which threatens ecosystem health in the LP. However, spatial characteristics and controlling factors of soil water generally vary within different soil layers. This has implications of vegetation recovery in the LP and has been overlooked in previous studies. This study investigates the spatial characteristics of soil desiccation in different layers from the 0- to 5-m depth across the entire LP and explores the relationships between soil desiccation and environmental factors. The soil desiccated index (SDI) in the 0- to 1-m soil layer was patchy, while in the 1- to 5-m soil layer, the degree of soil desiccation generally increased from southeast to northwest following a gradient of decreasing rainfall. Soil desiccation in the forestland and grassland were more severe than that in the cropland because of higher evapotranspiration, lower precipitation recharge and lower soil water holding capacity. Soil desiccation at the shallow depth (0-1 m) was mainly attributed to climate factors whereas deep soil desiccation (1-5 m depth) was more likely attributed to the joint effects of climate factors and non-climate factors. The results of this study can help develop practical sustainable land management practices, regional water budgets and help restoration of environment in the LP of China.
资助项目	National Natural Science Foundation of China[41877016] ; National Natural Science Foundation of China[41530854] ; National Key Project for Research and Development[2016YFC0501605] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017076] ; Youth Innovation Research Team Project[LENOM2016Q0001]
WOS关键词	TEMPORAL STABILITY ; WATER STORAGE ; MOISTURE ; VEGETATION ; LAYERS ; ALFALFA ; IMPACT ; REGION
WOS研究方向	Agriculture
语种	英语
出版者	SOIL SCI SOC AMER
WOS记录号	WOS:000466157500001
资助机构	National Natural Science Foundation of China ; National Key Project for Research and Development ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Research Team Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/59689]
专题	中国科学院地理科学与资源研究所
通讯作者	Jia, Xiaoxu
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.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chunlei,Shao, Ming'an,Jia, Xiaoxu,et al. Factors Affecting Soil Desiccation Spatial Variability in the Loess Plateau of China[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2019,83(2):266-275.
APA	Zhao, Chunlei,Shao, Ming'an,Jia, Xiaoxu,&Zhu, Yuanjun.(2019).Factors Affecting Soil Desiccation Spatial Variability in the Loess Plateau of China.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,83(2),266-275.
MLA	Zhao, Chunlei,et al."Factors Affecting Soil Desiccation Spatial Variability in the Loess Plateau of China".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 83.2(2019):266-275.