Shift in controlling factors of carbon stocks across biomes on the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Han, Daorui2; Hu, Zhongmin2,3; Wang, Xuhui4; Wang, Tao5; Chen, Anping6; Weng, Qihao1; Liang, Minqi2; Zeng, Xiang2; Cao, Ruochen2; Di, Kai2 |
| 刊名 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 17期号:7页码:14 |
| 关键词 | Qinghai-Tibetan Plateau SOC mapping machine learning algorithms driving factors uncertainties |
| ISSN号 | 1748-9326 |
| DOI | 10.1088/1748-9326/ac786 |
| 通讯作者 | Hu, Zhongmin(huzm@igsnrr.ac.cn) |
| 英文摘要 | The Qinghai-Tibetan Plateau (TP) accumulated a large amount of organic carbon, while its size and response to environmental factors for the whole area remain uncertain. Here, we synthesized a dataset to date with the largest data volume and broadest geographic coverage over the TP, composing of 7196 observations from multiple field campaigns since the 1980s, and provided a comprehensive assessment of the size and spatial distribution of carbon pools for both plant and soils on the TP using machine learning algorithms. The estimated soil organic carbon (SOC) storage to 1 m depth was 32.0(16.69)(47.9) Pg (11.72(7.2)(17.53) kg m(-2 )on average), accounting for approximately 37.2(22.9)(55.6)% of China's SOC stock on its <30% land area. There was 15.52(9.91)(23.52) Pg C stored in grassland soils (1 m), which played as the largest C pool on the TP, followed by shrubland (7.52(4.8)(11.6) Pg) and forest (3.72(2.5)(5.36) Pg). The estimated plant C pool was 2.4(0.9)(5)(5.16) Pg (1.03(0.2)(2.7) Pg in aboveground biomass (AGB) and 1.37(0.75)(2.45) Pg in belowground biomass). Soil and biomass C density presented a similar spatial pattern, which generally decreased from the east and southeast parts to the central and western parts. We found both vegetation and soil C (1 m depth) were primarily regulated by climatic variables and C input across the entire TP. However, main driving factors of the C stocks varied among vegetation types and depth intervals. Though AGB played as an important role in SOC variation for both topsoil (0-30 cm) and subsoil (30-100 cm), the strength of the correlation weakened with depth and was gradually attenuated from grassland to shrubland, and forest. The outcomes of this study provided an updated geospatial estimate of SOC stocks for the entire TP and their relationships with environmental factors, which are essential to carbon model benchmarking and better understanding the feedbacks of C stocks to global change. |
| WOS关键词 | SOIL ORGANIC-CARBON ; PERMAFROST REGIONS ; GRASSLANDS ; CLIMATE ; STORAGE ; POOLS ; 1980S |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0405] ; China Postdoctoral Science Foundation[2020M672684] ; Key R&D Program of Hainan[ZDYF2022SHFZ042] ; start-up fund of Hainan University[KYQD(ZR)21096] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000816866900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Program ; China Postdoctoral Science Foundation ; Key R&D Program of Hainan ; start-up fund of Hainan University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/179987]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Hu, Zhongmin |
| 作者单位 | 1.Indiana State Univ, Ctr Urban & Environm Change, Dept Earth & Environm Syst, Terre Haute, IN 47809 USA 2.South China Normal Univ, Sch Geog, Guangzhou 510631, Peoples R China 3.Hainan Univ, Key Lab Agroforestry Environm Proc & Ecol Regulat, Haikou 570228, Hainan, Peoples R China 4.Peking Univ, Coll Urban & Environm Sci, SinoFrench Inst Earth Syst Sci, Beijing 100091, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China 6.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 8.Chinese Acad Sci, Synth Res Ctr Chinas Ecosyst Res Network, Beijing 100101, Peoples R China 9.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Daorui,Hu, Zhongmin,Wang, Xuhui,et al. Shift in controlling factors of carbon stocks across biomes on the Qinghai-Tibetan Plateau[J]. ENVIRONMENTAL RESEARCH LETTERS,2022,17(7):14. |
| APA | Han, Daorui.,Hu, Zhongmin.,Wang, Xuhui.,Wang, Tao.,Chen, Anping.,...&Yu, Guirui.(2022).Shift in controlling factors of carbon stocks across biomes on the Qinghai-Tibetan Plateau.ENVIRONMENTAL RESEARCH LETTERS,17(7),14. |
| MLA | Han, Daorui,et al."Shift in controlling factors of carbon stocks across biomes on the Qinghai-Tibetan Plateau".ENVIRONMENTAL RESEARCH LETTERS 17.7(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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