Short-term grazing exclusion has no impact on soil properties and nutrients of degraded alpine grassland in Tibet, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Short-term grazing exclusion has no impact on soil properties and nutrients of degraded alpine grassland in Tibet, China
	Lu, X.1; Yan, Y.1 ; Sun, J.2; Zhang, X.3; Chen, Y.1; Wang, X.1; Cheng, G.1
刊名	SOLID EARTH
	2015
卷号	6 期号:4 页码:1195-1205
关键词	soil properties
ISSN号	1869-9510
通讯作者	Yan, Y.
英文摘要	Since the 1980s, alpine grasslands have been seriously degraded on the Tibetan Plateau. Grazing exclusion by fencing has been widely adopted to restore degraded grasslands. To clarify the effect of grazing exclusion on soil quality, we investigated soil properties and nutrients by comparing free-grazing (FG) and grazing exclusion (GE) grasslands in Tibet. Soil properties - including soil bulk density, pH, particle size distributions, and proportion of aggregates showed no significant difference between FG and GE plots. Soil organic carbon, soil available nitrogen, and available phosphorus contents did not differ with grazing exclusion treatments in both the 0-15 and 15-30 cm layer. However, soil total nitrogen and total phosphorus contents were remarkably reduced due to grazing exclusion at 0-15 cm depth. Furthermore, growing season temperature and/or growing season precipitation had significant effects on almost all soil property and nutrient indicators. This study demonstrates that grazing exclusion had no impact on most soil properties and nutrients in Tibet. Additionally, the potential shift of climate conditions should be considered when recommending any policy designed for restoration of degraded soil in alpine grasslands in the future. Nevertheless, because the results of the present study come from a short-term (6-8 years) grazing exclusion, the assessments of the ecological effects of the grazing exclusion management strategy on soil quality of degraded alpine grasslands in Tibet still need long-term continued research.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	ORGANIC-MATTER ; INNER-MONGOLIA ; NORTHERN CHINA ; CARBON STOCKS ; NITROGEN MINERALIZATION ; LIVESTOCK EXCLUSION ; TEMPERATE STEPPE ; C STOCKS ; PLATEAU ; STORAGE
收录类别	SCI
语种	英语
WOS记录号	WOS:000374540800007
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17387]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 3.Hohai Univ, Sch Publ Adm, Nanjing 210098, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Lu, X.,Yan, Y.,Sun, J.,et al. Short-term grazing exclusion has no impact on soil properties and nutrients of degraded alpine grassland in Tibet, China[J]. SOLID EARTH,2015,6(4):1195-1205.
APA	Lu, X..,Yan, Y..,Sun, J..,Zhang, X..,Chen, Y..,...&Cheng, G..(2015).Short-term grazing exclusion has no impact on soil properties and nutrients of degraded alpine grassland in Tibet, China.SOLID EARTH,6(4),1195-1205.
MLA	Lu, X.,et al."Short-term grazing exclusion has no impact on soil properties and nutrients of degraded alpine grassland in Tibet, China".SOLID EARTH 6.4(2015):1195-1205.