Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13521 |
Carbon emissions from agricultural expansion and intensification in the Chaco | |
Baumann, Matthias1; Gasparri, Ignacio2,3; Piquer-Rodrguez, Mara1; Gavier Pizarro, Gregorio4; Griffiths, Patrick1; Hostert, Patrick1,3; Kuemmerle, Tobias1,3 | |
2017-05-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
![]() |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Argentina |
英文摘要 | Carbon emissions from land-use changes in tropical dry forest systems are poorly understood, although they are likely globally significant. The South American Chaco has recently emerged as a hot spot of agricultural expansion and intensification, as cattle ranching and soybean cultivation expand into forests, and as soybean cultivation replaces grazing lands. Still, our knowledge of the rates and spatial patterns of these land-use changes and how they affected carbon emissions remains partial. We used the Landsat satellite image archive to reconstruct land-use change over the past 30 years and applied a carbon bookkeeping model to quantify how these changes affected carbon budgets. Between 1985 and 2013, more than 142 000 km(2) of the Chaco's forests, equaling 20% of all forest, was replaced by croplands (38.9%) or grazing lands (61.1%). Of those grazing lands that existed in 1985, about 40% were subsequently converted to cropland. These land-use changes resulted in substantial carbon emissions, totaling 824 Tg C between 1985 and 2013, and 46.2 Tg C for 2013 alone. The majority of these emissions came from forest-to-grazing-land conversions (68%), but post-deforestation land-use change triggered an additional 52.6 Tg C. Although tropical dry forests are less carbon-dense than moist tropical forests, carbon emissions from land-use change in the Chaco were similar in magnitude to those from other major tropical deforestation frontiers. Our study thus highlights the urgent need for an improved monitoring of the often overlooked tropical dry forests and savannas, and more broadly speaking the value of the Landsat image archive for quantifying carbon fluxes from land change. |
英文关键词 | carbon bookkeeping model deforestation frontiers Landsat image archive land-use change post-deforestation dynamics savannas tropical dry forests |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000397800600013 |
WOS关键词 | SEASONALLY DRY FORESTS ; LAND-COVER CHANGE ; TIME-SERIES DATA ; DEFORESTATION DYNAMICS ; BRAZILIAN CERRADO ; PROXIMATE CAUSES ; ARGENTINA ; CROPLAND ; AMERICA ; RATES |
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/17424 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Humboldt Univ, Dept Geog, Unter Linden 6, D-10099 Berlin, Germany; 2.Univ Nacl Tucuman, Inst Ecol Reg, CONICET, CC 34, RA-4107 Yerba Buena, Tucuman, Argentina; 3.Humboldt Univ, Integrat Res Inst Transformat Human Environm Syst, Unter Linden 6, D-10099 Berlin, Germany; 4.Inst Recursos Biol IRB CNIA, INTA, Reseros & Las Cabanas S-N HB1712WAA, Buenos Aires, DF, Argentina |
推荐引用方式 GB/T 7714 | Baumann, Matthias,Gasparri, Ignacio,Piquer-Rodrguez, Mara,et al. Carbon emissions from agricultural expansion and intensification in the Chaco[J]. GLOBAL CHANGE BIOLOGY,2017,23(5). |
APA | Baumann, Matthias.,Gasparri, Ignacio.,Piquer-Rodrguez, Mara.,Gavier Pizarro, Gregorio.,Griffiths, Patrick.,...&Kuemmerle, Tobias.(2017).Carbon emissions from agricultural expansion and intensification in the Chaco.GLOBAL CHANGE BIOLOGY,23(5). |
MLA | Baumann, Matthias,et al."Carbon emissions from agricultural expansion and intensification in the Chaco".GLOBAL CHANGE BIOLOGY 23.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论