Restoration efficiency of short-term grazing exclusion is the highest at the stage shifting from light to moderate degradation at Zoige, Tibetan Plateau

doi:10.1016/j.ecolind.2020.106323

	Restoration efficiency of short-term grazing exclusion is the highest at the stage shifting from light to moderate degradation at Zoige, Tibetan Plateau
	Liu, Miao 2,3; Zhang, Zhenchao 1,2; Sun, Jian 2; Li, Yurui ; Liu, Yu 2; Berihun, Mulatu Liyew 4,6; Xu, Ming 2; Tsunekawa, Atsushi 3; Chen, Youjun 5
刊名	ECOLOGICAL INDICATORS
	2020-07-01
卷号	114 页码:9
关键词	Alpine meadow Degradation Turning point Grazing exclusion Restoration Zoige Plateau
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2020.106323
通讯作者	Sun, Jian(sunjian@igsnrr.ac.cn) ; Xu, Ming(mingxu@igsnrr.ac.cn)
英文摘要	Grassland degradation has profound negative impacts on ecological functions, local economic development, and social stability. Although there are many studies on the alpine grassland degradation in the Tibetan Plateau, the variation in the response of alpine meadows to degradation and restoration processes, and the underlying mechanisms remain poorly understood. To explore these issues, we selected nine grassland degradation levels along an increasing gradient at Zoige in the Tibetan Plateau, and collected vegetation and soil samples in August 2017 and 2018 to assess the state of the grassland before and after grazing exclusion (GE), respectively. The results showed that above-ground biomass (AGB), below-ground biomass (BGB), Shannon-Wiener index, soil water content (SWC), soil organic carbon (SOC), total nitrogen (STN), and total phosphorus decreased gradually with severe degrees of degradation, whereas soil bulk density and pH increased. SWC in the topsoil presented the sharpest change in slope along the degradation gradient, indicating that SWC was a sensitive indicator of alpine meadow degradation in this area. One-year GE evidently increased SWC, SOC, STN, AGB, and BGB in lightly and moderately degraded grasslands. The restoration efficiency of GE first increased and then decreased along the degradation gradient, with the turning point appearing at the third or fourth degradation level. Based on these results, we can conclude that short-term GE is an effective method for grassland restoration in this humid area, and should be performed at the shift from light to moderate degradation stages when the efficiency of recovery is the highest. These findings could facilitate a better approach for the restoration of degraded alpine meadow ecosystems.
资助项目	China Postdoctoral Science Foundation[2017M620889] ; State Key Research Development Program of China[2016YFC0501803] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0405]
WOS关键词	BELOW-GROUND BIOMASS ; SOIL HYDRAULIC-PROPERTIES ; ABOVEGROUND BIOMASS ; ALPINE GRASSLAND ; ENVIRONMENTAL-FACTORS ; TEMPERATE GRASSLAND ; PLANT COMMUNITY ; INNER-MONGOLIA ; SOURCE REGION ; CARBON
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000559966500007
资助机构	China Postdoctoral Science Foundation ; State Key Research Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/158088]
专题	中国科学院地理科学与资源研究所
通讯作者	Sun, Jian; Xu, Ming
作者单位	1.Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China 3.Tottori Univ Tottori, Arid Land Res Ctr, Tottori 6800001, Japan 4.Bahir Dar Univ, Bahir Dar Inst Technol, Fac Civil & Water Resource Engn, POB 26, Bahir Dar, Ethiopia 5.Southwest Minzu Univ, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China 6.Tottori Univ, United Grad Sch Agr Sci, Tottori 6808553, Japan
推荐引用方式 GB/T 7714	Liu, Miao,Zhang, Zhenchao,Sun, Jian,et al. Restoration efficiency of short-term grazing exclusion is the highest at the stage shifting from light to moderate degradation at Zoige, Tibetan Plateau[J]. ECOLOGICAL INDICATORS,2020,114:9.
APA	Liu, Miao.,Zhang, Zhenchao.,Sun, Jian.,Li, Yurui.,Liu, Yu.,...&Chen, Youjun.(2020).Restoration efficiency of short-term grazing exclusion is the highest at the stage shifting from light to moderate degradation at Zoige, Tibetan Plateau.ECOLOGICAL INDICATORS,114,9.
MLA	Liu, Miao,et al."Restoration efficiency of short-term grazing exclusion is the highest at the stage shifting from light to moderate degradation at Zoige, Tibetan Plateau".ECOLOGICAL INDICATORS 114(2020):9.