China's Terrestrial Carbon Sink Over 2010-2015 Constrained by Satellite Observations of Atmospheric CO2 and Land Surface Variables
文献类型：期刊论文
| 作者 | He, Wei1,2; Jiang, Fei1,2,3; Wu, Mousong1,2,4; Ju, Weimin1,2; Scholze, Marko4; Chen, Jing M.5,6; Byrne, Brendan7; Liu, Junjie7; Wang, Hengmao1,2; Wang, Jun1,2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 127期号:2页码:17 |
| 关键词 | China's carbon sink data assimilation atmospheric inversion atmospheric CO2 concentration multisource satellite observations |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2021JG006644 |
| 通讯作者 | Jiang, Fei(jiangf@nju.edu.cn) ; Wu, Mousong(mousongwu@nju.edu.cn) |
| 英文摘要 | The magnitude and distribution of China's terrestrial carbon sink remain uncertain due to insufficient constraints at large scales, whereby satellite data offer great potential for reducing the uncertainty. Here, we present two carbon sink estimates for China constrained either by satellite CO2 column concentrations (XCO2) within the Global Carbon Assimilation System or by remotely sensed soil moisture and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) in addition to in situ CO2 observations within the Carbon Cycle Data Assimilation System. They point to a moderate size of carbon sinks of 0.34 +/- 0.14 (mean +/- unc.) and 0.43 +/- 0.09 PgC/yr during 2010-2015, which are supported by an inventory-based estimate for forest and soil carbon sink (0.26 PgC/yr) and fall in the range of contemporary ensemble atmospheric inversions (0.25-0.48 PgC/yr). They also agree reasonably well on interannual variations, which reflect the carbon sink anomalies induced by regional droughts in southwest China. Furthermore, their spatial distributions are broadly consistent that of the forest inventory-based estimate, indicating that the largest carbon sinks locate in central and eastern China. Their estimates for forest carbon sink coincide fairly well with the inventory-based estimate across different regions, especially when aggregated to the north and south of China. Although enhanced recently by afforestation, China's carbon sink was also significantly weakened by regional droughts, which were often not fully represented in previous in situ CO2-based inversions due to insufficient observations. Our results suggest that satellite-based atmospheric CO2 and land surface observations are vital in characterizing terrestrial net carbon fluxes at regional scales. |
| WOS关键词 | DATA ASSIMILATION ; RETRIEVAL ALGORITHM ; ECOSYSTEMS ; MODEL ; BIOSPHERE ; EXCHANGE ; BALANCE ; CLIMATE ; SYSTEM ; BUDGET |
| 资助项目 | National Key R&D Program of China[2020YFA0607504] ; National Key R&D Program of China[2016YFA0600204] ; National Natural Science Foundation of China[41907378] ; National Natural Science Foundation of China[41901266] ; National Natural Science Foundation of China[41807434] ; National Natural Science Foundation of China[42111530184] ; Natural Science Foundation of Jiangsu Province[BK20190317] ; National Aeronautics and Space Administration[80NM0018D0004] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000763471300010 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; National Aeronautics and Space Administration |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/172251]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jiang, Fei; Wu, Mousong |
| 作者单位 | 1.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing, Peoples R China 2.Nanjing Univ, Sch Geog & Ocean Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing, Peoples R China 3.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing, Peoples R China 4.Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden 5.Univ Toronto, Dept Geog & Planning, Toronto, ON, Canada 6.Fujian Normal Univ, Sch Geog Sci, Fuzhou, Peoples R China 7.CALTECH, Jet Prop Lab, Pasadena, CA USA 8.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Key Lab Crop Physiol & Ecol Southern China, Nanjing, Peoples R China 9.Ludong Univ, Sch Resources & Environm Engn, Yantai, Peoples R China 10.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Coll Hydrol & Water Resources, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Wei,Jiang, Fei,Wu, Mousong,et al. China's Terrestrial Carbon Sink Over 2010-2015 Constrained by Satellite Observations of Atmospheric CO2 and Land Surface Variables[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2022,127(2):17. |
| APA | He, Wei.,Jiang, Fei.,Wu, Mousong.,Ju, Weimin.,Scholze, Marko.,...&Chen, Zhi.(2022).China's Terrestrial Carbon Sink Over 2010-2015 Constrained by Satellite Observations of Atmospheric CO2 and Land Surface Variables.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(2),17. |
| MLA | He, Wei,et al."China's Terrestrial Carbon Sink Over 2010-2015 Constrained by Satellite Observations of Atmospheric CO2 and Land Surface Variables".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.2(2022):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。