Perturbations in the carbon budget of the tropics.
Perturbations in the carbon budget of the tropics.
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DOI：
10.1111/gcb.12600
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发表时间：
2014-10
影响因子：
11.6
通讯作者：
Gloor E
中科院分区：
文献类型：
--
作者：
Grace J;Mitchard E;Gloor E
由于人类的影响，热带地区的碳收支受到了干扰。在这里，我们试图对预算的生物组成部分进行“自下而上”的分析，因为它们受到人类活动的影响。在不同植被类型的范围和碳含量、土地利用变化率和森林退化方面存在重大不确定性，但卫星遥感最近的发展在减少这些不确定性方面取得了很大进展。热带森林和林地中作为生物量的碳储量总计为271±2.16 Pg，而作为土壤有机质的碳的数量甚至更多。森林砍伐、退化、采伐和泥炭火灾造成的碳损失估计为2.01Pg/年−1，而森林和林地生长的碳增量为1.85Pg/年−1。我们得出结论，热带土地平均而言是大气的一个小碳源，这一结果与大气测量的自上而下的结果一致。如果要保护它们，它们将是一个巨大的碳汇。热带地区燃烧化石燃料所释放的二氧化碳为0.74mpg/−1或0.57mgC/人/年−1/−，远低于世界发达地区的相应数字。
The carbon budget of the tropics has been perturbed as a result of human influences. Here, we attempt to construct a ‘bottom-up’ analysis of the biological components of the budget as they are affected by human activities. There are major uncertainties in the extent and carbon content of different vegetation types, the rates of land-use change and forest degradation, but recent developments in satellite remote sensing have gone far towards reducing these uncertainties. Stocks of carbon as biomass in tropical forests and woodlands add up to 271 ± 16 Pg with an even greater quantity of carbon as soil organic matter. Carbon loss from deforestation, degradation, harvesting and peat fires is estimated as 2.01 ± 1.1 Pg annum−1; while carbon gain from forest and woodland growth is 1.85 ± 0.09 Pg annum−1. We conclude that tropical lands are on average a small carbon source to the atmosphere, a result that is consistent with the ‘top-down’ result from measurements in the atmosphere. If they were to be conserved, they would be a substantial carbon sink. Release of carbon as carbon dioxide from fossil fuel burning in the tropics is 0.74 Pg annum−1 or 0.57 MgC person−1 annum−1, much lower than the corresponding figures from developed regions of the world.
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影响因子：
56.9
作者：
Beer, Christian;Reichstein, Markus;Papale, Dario
通讯作者：
Papale, Dario
DOI：
10.1073/pnas.1004875107
发表时间：
2010-09-21
影响因子：
11.1
作者：
Asner, Gregory P.;Powell, George V. N.;Hughes, R. Flint
通讯作者：
Hughes, R. Flint
DOI：
10.1098/rstb.2007.0026
发表时间：
2008-05-27
期刊：
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子：
--
作者：
Aragão LE;Malhi Y;Barbier N;Lima A;Shimabukuro Y;Anderson L;Saatchi S
通讯作者：
Saatchi S
影响因子：
30.7
作者：
Baccini, A.;Goetz, S. J.;Houghton, R. A.
通讯作者：
Houghton, R. A.
影响因子：
4.1
作者：
Achten, Wouter M. J.;Verchot, Louis V.
通讯作者：
Verchot, Louis V.