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Ecosystem Carbon Storage in Alpine Grassland on the Qinghai Plateau
Liu, Shuli1,2; Zhang, Fawei1; Du, Yangong1; Guo, Xiaowei1; Lin, Li1; Li, Yikang1; Li, Qian1; Cao, Guangmin1
2016-08-05
Source PublicationPLOS ONE
Volume11Issue:8
SubtypeArticle
AbstractThe alpine grassland ecosystem can sequester a large quantity of carbon, yet its significance remains controversial owing to large uncertainties in the relative contributions of climate factors and grazing intensity. In this study we surveyed 115 sites to measure ecosystem carbon storage (both biomass and soil) in alpine grassland over the Qinghai Plateau during the peak growing season in 2011 and 2012. Our results revealed three key findings. (1) Total biomass carbon density ranged from 0.04 for alpine steppe to 2.80 kg C m(-2) for alpine meadow. Median soil organic carbon (SOC) density was estimated to be 16.43 kg Cm-2 in alpine grassland. Total ecosystem carbon density varied across sites and grassland types, from 1.95 to 28.56 kg C m(-2). (2) Based on the median estimate, the total carbon storage of alpine grassland on the Qinghai Plateau was 5.14 Pg, of which 94% (4.85 Pg) was soil organic carbon. (3) Overall, we found that ecosystem carbon density was affected by both climate and grazing, but to different extents. Temperature and precipitation interaction significantly affected AGB carbon density in winter pasture, BGB carbon density in alpine meadow, and SOC density in alpine steppe. On the other hand, grazing intensity affected AGB carbon density in summer pasture, SOC density in alpine meadow and ecosystem carbon density in alpine grassland. Our results indicate that grazing intensity was the primary contributing factor controlling carbon storage at the sites tested and should be the primary consideration when accurately estimating the carbon storage in alpine grassland.
WOS HeadingsScience & Technology
DOI10.1371/journal.pone.0160420
WOS KeywordNET PRIMARY PRODUCTIVITY ; BELOW-GROUND BIOMASS ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; TERRESTRIAL ECOSYSTEMS ; ABOVEGROUND BIOMASS ; GRAZING INTENSITY ; CHINA GRASSLANDS ; ORGANIC-CARBON ; VEGETATION
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(41030105) ; "Strategic Priority Research Program - Climate Change: Carbon Budget, Related Issues" of the Chinese Academy of Sciences(XDA05050404)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000381369500043
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/6446
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Qinghai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shuli,Zhang, Fawei,Du, Yangong,et al. Ecosystem Carbon Storage in Alpine Grassland on the Qinghai Plateau[J]. PLOS ONE,2016,11(8).
APA Liu, Shuli.,Zhang, Fawei.,Du, Yangong.,Guo, Xiaowei.,Lin, Li.,...&Cao, Guangmin.(2016).Ecosystem Carbon Storage in Alpine Grassland on the Qinghai Plateau.PLOS ONE,11(8).
MLA Liu, Shuli,et al."Ecosystem Carbon Storage in Alpine Grassland on the Qinghai Plateau".PLOS ONE 11.8(2016).
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