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Effects of long-term grazing exclusion on vegetation structure, soil water holding capacity, carbon and nitrogen sequestration capacity in an alpine meadow on the Tibetan Plateau

文献类型：期刊论文

作者Yang, Yong-sheng; Zhang, Fa-wei; Xie, Xian-rong; Wang, Jun-bang; Li, Ying-nian; Huang, Xiao-tao; Li, Hui-ting; Zhou, Hua-kun
刊名JOURNAL OF MOUNTAIN SCIENCE
出版日期2023-04-01
卷号N/A
ISSN号1993-0321
关键词Long-term grazing exclusion Soil water holding capacity Soil carbon and nitrogen sequestration Biomass Alpine meadow
DOI10.1007/s11629-021-7232-2
文献子类Article; Early Access
英文摘要Grazing exclusion is one of the primary management practices used to restore degraded grasslands on the Tibetan Plateau. However, to date, the effects of long-term grazing exclusion measures on the process of restoring degraded alpine meadows have not been evaluated. In this study, moderately degraded plots, in which the vegetation coverage was approximately 65% and the dominant plant species was Potentilla anserina L, with grazing exclusion for 2 to 23 years, were selected in alpine meadows of Haibei in Qinghai-Tibet Plateau. Plant coverage, plant height, biomass, soil bulk density, saturated water content, soil organic carbon (SOC) and total nitrogen (TN) were evaluated. The results were as follows: (1) With increased grazing exclusion duration, aboveground biomass and total saturated water content at 0-40 cm depth, the average SOC and TN contents in moderately degraded alpine meadows increased as a power function, and the plant height increased as a log function. (2) The average soil bulk density at 0-40 cm depth first decreased and then increased with increasing grazing exclusion duration, and the minimum value of 0.90 g center dot cm(-3) was reached at 15.23 years. The plant coverage, total belowground biomass at 0-40 cm depth, total aboveground and belowground biomass first increased and then decreased, their maximum values (80.49%, 2452.92 g center dot m(-2), 2891.06 g center dot m(-2)) were reached at 9.41, 9.46 and 10.25 years, respectively. Long-term grazing exclusion is apparently harmful for the sustainable restoration of degraded alpine meadows. The optimal duration of grazing exclusion for the restoration of moderately degraded alpine meadows was 10 years. This research suggests that moderate disturbance should be allowed in moderately degraded alpine meadows after 10 years of grazing exclusion.
WOS关键词ORGANIC-CARBON ; COMMUNITY STRUCTURE ; ARID DESERT ; LAND-USE ; GRASSLAND ; BIOMASS ; LITTER ; DEGRADATION ; RESTORATION ; DENSITY
WOS研究方向Environmental Sciences & Ecology
出版者SCIENCE PRESS
WOS记录号WOS:000946961000005
源URL[http://ir.igsnrr.ac.cn/handle/311030/190239]  
专题生态系统网络观测与模拟院重点实验室_外文论文
作者单位1.[Xie, Xian-rong
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Xi Ning Municipal Beishan Forestry Farm, Xining 810003, Peoples R China
4.Qinghai Haibei Natl Field Res Stn Alpine Grassland, Xining 810008, Peoples R China
5.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai Prov, Xining 810008, Peoples R China
6.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
7.[Yang, Yong-sheng
8.Huang, Xiao-tao
9.Li, Ying-nian
10.Zhang, Fa-wei
推荐引用方式
GB/T 7714		 Yang, Yong-sheng,Zhang, Fa-wei,Xie, Xian-rong,et al. Effects of long-term grazing exclusion on vegetation structure, soil water holding capacity, carbon and nitrogen sequestration capacity in an alpine meadow on the Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2023,N/A.
APA Yang, Yong-sheng.,Zhang, Fa-wei.,Xie, Xian-rong.,Wang, Jun-bang.,Li, Ying-nian.,...&Zhou, Hua-kun.(2023).Effects of long-term grazing exclusion on vegetation structure, soil water holding capacity, carbon and nitrogen sequestration capacity in an alpine meadow on the Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,N/A.
MLA Yang, Yong-sheng,et al."Effects of long-term grazing exclusion on vegetation structure, soil water holding capacity, carbon and nitrogen sequestration capacity in an alpine meadow on the Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE N/A(2023).

入库方式： OAI收割

来源：地理科学与资源研究所

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