Impacts of shrub introduction on soil properties and implications for dryland revegetation

doi:10.1016/j.scitotenv.2020.140498

	Impacts of shrub introduction on soil properties and implications for dryland revegetation
	Zhang, Chencheng 4,5,6; Wang, Yunqiang 1,2,4,5; Jia, Xiaoxu 3; Shao, Ming'an 3,5; An, Zhisheng 2,4,5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-11-10
卷号	742 页码:11
关键词	Arid environment Korshinsk peashrub Soil water content Shrub patch size Vegetation pattern
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.140498
通讯作者	Wang, Yunqiang(wangyq@ieecas.cn)
英文摘要	The intensive introduction of shrubs to drylands can alter species composition and affect a series of biotic and abiotic processes. This topic has attracted increasing attention by researchers. To assess the response of soil properties to vegetation succession in arid regions of China, we measured the soil water content (SWC) to a depth of 5m and determined soil properties of surface (0-5 cm) and subsurface (20-25 cm) layers in areas of natural grasses (NGs) and planted shrubs (PSs). The patch size of Caragana korshinskii shrubs resulted in different soil water storage losses (small shrub patch: 206.67 +/- 35.58 mm; medium shrub patch: 416.88 +/- 35.12 mm; large shrub patch: 588.63 +/- 72.00 mm; degraded shrub patch: 740.54 +/- 17.00 mm). Shrub cover showed an initial increase but then decreased as shrubs extracted soil water from the deep soil layers (>1 m). The species richness index in the PSs decreased with increasing shrub patch sizes. Surface soil organic carbon (SOC), extractable nitrogen (NH4+-N and NH3--N), and available phosphorous contents and saturated soil hydraulic conductivity (Ks) in the PSs were all significantly (p < 0.05) lower than those in NGs. Soil particles in the range of 0.002-02 mm explained 28.0% and 47.3% of the total variability of these surface indices under NGs and PSs, respectively. The differences in SOC, NH4+-N, NO3--N, Ks, and field capacity between the surface and subsurface layers declined significantly (p < 0.05). The introduction of shrubs affected the plant community by increasing the spatial heterogeneity of soil resources (e.g. water and nutrient contents). Therefore, the strong feedback between SWC and vegetation succession should be carefully considered when revegetating drylands. The evaluation of regional soil property responses to vegetation succession aids in a better understanding of soil water-vegetation feedback and provides important implications for future revegetation in arid regions. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41530854] ; National Natural Science Foundation of China[41807020] ; National Natural Science Foundation of China[41722106] ; Ten Thousand Talent Program for Young top-notch talent ; Open Foundation of State Key Laboratory of Loess and Quaternary Geology[QDJF1803]
WOS关键词	EROSION CRISSCROSS REGION ; WATER CARRYING-CAPACITY ; LOESS PLATEAU ; WIND EROSION ; SPATIAL VARIABILITY ; AEOLIAN PROCESSES ; INNER-MONGOLIA ; LAND-USE ; VEGETATION ; RESTORATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000569416600011
资助机构	National Natural Science Foundation of China ; Ten Thousand Talent Program for Young top-notch talent ; Open Foundation of State Key Laboratory of Loess and Quaternary Geology
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/15320]
专题	中国科学院地球环境研究所
通讯作者	Wang, Yunqiang
作者单位	1.Xi An Jiao Tong Univ, Dept Earth & Environm Sci, Xian 710049, Peoples R China 2.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 6.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chencheng,Wang, Yunqiang,Jia, Xiaoxu,et al. Impacts of shrub introduction on soil properties and implications for dryland revegetation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,742:11.
APA	Zhang, Chencheng,Wang, Yunqiang,Jia, Xiaoxu,Shao, Ming'an,&An, Zhisheng.(2020).Impacts of shrub introduction on soil properties and implications for dryland revegetation.SCIENCE OF THE TOTAL ENVIRONMENT,742,11.
MLA	Zhang, Chencheng,et al."Impacts of shrub introduction on soil properties and implications for dryland revegetation".SCIENCE OF THE TOTAL ENVIRONMENT 742(2020):11.