Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14768 |
Largely underestimated carbon emission from land use and land cover change in the conterminous United States | |
Yu, Zhen1,2; Lu, Chaoqun1; Tian, Hanqin3,4; Canadell, Josep G.5 | |
2019-08-10 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:11页码:3741-3752 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Australia |
英文摘要 | Carbon (C) emission and uptake due to land use and land cover change (LULCC) are the most uncertain term in the global carbon budget primarily due to limited LULCC data and inadequate model capability (e.g., underrepresented agricultural managements). We take the commonly used FAOSTAT-based global Land Use Harmonization data (LUH2) and a new high-resolution multisource harmonized national LULCC database (YLmap) to drive a land ecosystem model (DLEM) in the conterminous United States. We found that recent cropland abandonment and forest recovery may have been overestimated in the LUH2 data derived from national statistics, causing previously reported C emissions from land use have been underestimated due to the definition of cropland and aggregated LULCC signals at coarse resolution. This overestimation leads to a strong C sink (30.3 +/- 2.5 Tg C/year) in model simulations driven by LUH2 in the United States during the 1980-2016 period, while we find a moderate C source (13.6 +/- 3.5 Tg C/year) when using YLmap. This divergence implies that previous C budget analyses based on the global LUH2 dataset have underestimated C emission in the United States owing to the delineation of suitable cropland and aggregated land conversion signals at coarse resolution which YLmap overcomes. Thus, to obtain more accurate quantification of LULCC-induced C emission and better serve global C budget accounting, it is urgently needed to develop fine-scale country-specific LULCC data to characterize the details of land conversion. |
英文关键词 | carbon fluxes conterminous United States cropland abandonment cropland expansion forest recovery land use and land cover change |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000480866100001 |
WOS关键词 | USE TRANSITIONS ; CLIMATE-CHANGE ; WOOD-HARVEST ; CO2 ; DYNAMICS ; CONSEQUENCES ; HISTORY ; TRENDS ; SOILS ; FLUX |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185945 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Iowa State Univ, Dept Ecol Evolut & Organismal Biol, Ames, IA 50011 USA; 2.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing, Jiangsu, Peoples R China; 3.Auburn Univ, Int Ctr Climate & Global Change Res, Auburn, AL 36849 USA; 4.Auburn Univ, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA; 5.CSIRO Oceans & Atmosphere, Canberra, ACT, Australia |
推荐引用方式 GB/T 7714 | Yu, Zhen,Lu, Chaoqun,Tian, Hanqin,et al. Largely underestimated carbon emission from land use and land cover change in the conterminous United States[J]. GLOBAL CHANGE BIOLOGY,2019,25(11):3741-3752. |
APA | Yu, Zhen,Lu, Chaoqun,Tian, Hanqin,&Canadell, Josep G..(2019).Largely underestimated carbon emission from land use and land cover change in the conterminous United States.GLOBAL CHANGE BIOLOGY,25(11),3741-3752. |
MLA | Yu, Zhen,et al."Largely underestimated carbon emission from land use and land cover change in the conterminous United States".GLOBAL CHANGE BIOLOGY 25.11(2019):3741-3752. |
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