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Estimates of grassland biomass and turnover time on the Tibetan Plateau
Xia, Jiangzhou1,2; Ma, Minna3; Liang, Tiangang4; Wu, Chaoyang5; Yang, Yuanhe6; Zhang, Li7; Zhang, Yangjian5; Yuan, Wenping1,2
2018
Source PublicationENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
Volume13Issue:1Pages:12
Corresponding AuthorYuan, Wenping(yuanwpcn@126.com)
AbstractThe grassland of the Tibetan Plateau forms a globally significant biome, which represents 6% of the world's grasslands and 44% of China's grasslands. However, large uncertainties remain concerning the vegetation carbon storage and turnover time in this biome. In this study, we quantified the pool size of both the aboveground and belowground biomass and turnover time of belowground biomass across the Tibetan Plateau by combining systematic measurements taken from a substantial number of surveys (i.e. 1689 sites for aboveground biomass, 174 sites for belowground biomass) with a machine learning technique (i.e. random forest, RF). Our study demonstrated that the RF model is effective tool for upscaling local biomass observations to the regional scale, and for producing continuous biomass estimates of the Tibetan Plateau. On average, the models estimated 46.57 Tg (1 Tg = 10(12)g) C of aboveground biomass and 363.71 Tg C of belowground biomass in the Tibetan grasslands covering an area of 1.32 X 10(6) km(2). The turnover time of belowground biomass demonstrated large spatial heterogeneity, with a median turnover time of 4.25 years. Our results also demonstrated large differences in the biomass simulations among the major ecosystem models used for the Tibetan Plateau, largely because of inadequate model parameterization and validation. This study provides a spatially continuous measure of vegetation carbon storage and turnover time, and provides useful information for advancing ecosystem models and improving their performance.
Keywordbiomass turnover time vegetation index Tibetan Plateau random forest
DOI10.1088/1748-9326/aa9997
WOS KeywordGROSS PRIMARY PRODUCTION ; TERRESTRIAL ECOSYSTEMS ; CARBON STORAGE ; CHINA GRASSLANDS ; CO2 ENRICHMENT ; ROOT ; VEGETATION ; FORESTS ; MODEL ; CLIMATE
Indexed BySCI
Language英语
Funding ProjectNational Key Project[2016YFA0602701] ; General Program of National Natural Science Foundation of China[31570468] ; One Hundred Person Project of Chinese Academy of Sciences[Y329k71002] ; Youth Changjiang Scholars Programme of China[Q2016161] ; National Youth Top-notch Talent Support Program
Funding OrganizationNational Key Project ; General Program of National Natural Science Foundation of China ; One Hundred Person Project of Chinese Academy of Sciences ; Youth Changjiang Scholars Programme of China ; National Youth Top-notch Talent Support Program
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000422903600003
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/56835
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYuan, Wenping
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China
2.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
3.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai 519082, Guangdong, Peoples R China
4.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Gansu, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
7.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China
Recommended Citation
GB/T 7714
Xia, Jiangzhou,Ma, Minna,Liang, Tiangang,et al. Estimates of grassland biomass and turnover time on the Tibetan Plateau[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(1):12.
APA Xia, Jiangzhou.,Ma, Minna.,Liang, Tiangang.,Wu, Chaoyang.,Yang, Yuanhe.,...&Yuan, Wenping.(2018).Estimates of grassland biomass and turnover time on the Tibetan Plateau.ENVIRONMENTAL RESEARCH LETTERS,13(1),12.
MLA Xia, Jiangzhou,et al."Estimates of grassland biomass and turnover time on the Tibetan Plateau".ENVIRONMENTAL RESEARCH LETTERS 13.1(2018):12.
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