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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
发表期刊PLOS ONE
卷号11期号:8
文章类型Article
摘要The 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标题词Science & Technology
DOI10.1371/journal.pone.0160420
关键词[WOS]NET PRIMARY PRODUCTIVITY ; BELOW-GROUND BIOMASS ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; TERRESTRIAL ECOSYSTEMS ; ABOVEGROUND BIOMASS ; GRAZING INTENSITY ; CHINA GRASSLANDS ; ORGANIC-CARBON ; VEGETATION
收录类别SCI
语种英语
项目资助者National Natural Science Foundation of China(41030105) ; "Strategic Priority Research Program - Climate Change: Carbon Budget, Related Issues" of the Chinese Academy of Sciences(XDA05050404)
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000381369500043
引用统计
被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/6446
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Qinghai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
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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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