气候变化领域集成服务门户(CCPortal): Effect of grazing management strategies on alpine grassland on the northeastern Qinghai-Tibet Plateau

CCPortal

DOI	10.1016/j.ecoleng.2021.106418
	Effect of grazing management strategies on alpine grassland on the northeastern Qinghai-Tibet Plateau
	Dai, Licong; Fu, Ruiyu; Guo, Xiaowei; Ke, Xun; Du, Yangong; Zhang, Fawei; Cao, Guangmin
通讯作者	Guo, XW ; Cao, GM (通讯作者)，Xinning Rd 23, Xining 810008, Peoples R China.
发表日期	2021
ISSN	0925-8574
EISSN	1872-6992
卷号	173
英文摘要	In recent decades, alpine grassland has been seriously degraded owing to overgrazing across the Qinghai Tibetan Plateau (QTP), although grazing exclusion has been widely adopted to restore degraded QTP grassland. It remains unknown whether such management approach is effective for all degraded alpine grasslands, and the effect of different grazing management strategies on grassland at varying levels of degradation needs to be assessed. In this study, plots with three grazing management treatments (free grazing, FG; reduced grazing, RG; grazing exclusion, GE) and four degradation stages (non-degradation, ND; light degradation, LD; moderate degradation, MD; heavy degradation, HD) were compared. Our results showed that the total aboveground biomass (AGB) and species richness (SR) under free grazing treatment were reduced with increasing degradation, whereas total belowground biomass (BGB) under free grazing treatment increased with increasing degradation. Furthermore, the responses of SR, AGB and BGB to grazing management varied with the degree of degradation. The total AGB in the LD, MD and HD stages increased significantly following RG and GE treatments, but there was no significant change of AGB in the ND stage. Meanwhile, SR reduced significantly following RG and GE treatments under all degradation stages except for HD. After RG and GE treatments, the total BGB increased significantly in the ND stage but decreased significantly under GE treatment in the MD and HD stages. Furthermore, the responses of plant functional groups to grazing management were varied. The Gramineae AGB increased significantly across all degradation levels under RG and GE treatments, whereas the sedges AGB decreased (except in the MD stage under GE management). Our results suggested that the effect of grazing management on alpine grassland depended on the degree of degradation.
关键词	VEGETATIVE ECOLOGICAL CHARACTERISTICS PLANT DIVERSITY SOIL PROPERTIES EXCLUSION DEGRADATION EFFICIENCY COMMUNITY MEADOWS BIOMASS STORAGE
英文关键词	Degraded grassland; Plant functional groups; Aboveground biomass; Belowground biomass; Species richness
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Engineering
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000704979200005
来源期刊	ECOLOGICAL ENGINEERING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254185
作者单位	[Dai, Licong] Hainan Univ, Coll Ecol & Environm, Haikou 570228, Hainan, Peoples R China; [Dai, Licong; Guo, Xiaowei; Ke, Xun; Du, Yangong; Zhang, Fawei; Cao, Guangmin] Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining 810001, Peoples R China; [Fu, Ruiyu] Nanning Normal Univ, Sch Geog & Planning, Nanning 530001, Peoples R China
推荐引用方式 GB/T 7714	Dai, Licong,Fu, Ruiyu,Guo, Xiaowei,et al. Effect of grazing management strategies on alpine grassland on the northeastern Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2021,173.
APA	Dai, Licong.,Fu, Ruiyu.,Guo, Xiaowei.,Ke, Xun.,Du, Yangong.,...&Cao, Guangmin.(2021).Effect of grazing management strategies on alpine grassland on the northeastern Qinghai-Tibet Plateau.ECOLOGICAL ENGINEERING,173.
MLA	Dai, Licong,et al."Effect of grazing management strategies on alpine grassland on the northeastern Qinghai-Tibet Plateau".ECOLOGICAL ENGINEERING 173(2021).