Spatially complex land change: The Indirect effect of Brazil's agricultural sector on land use in Amazonia.
Spatially complex land change: The Indirect effect of Brazil's agricultural sector on land use in Amazonia.
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DOI：
10.1016/j.gloenvcha.2014.06.011
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发表时间：
2014-11-01
影响因子：
8.9
通讯作者：
Arirna, Eugenio Y.
中科院分区：
文献类型：
--
作者：
Richards, Peter D.;Walker, Robert T.;Arirna, Eugenio Y.
大豆种植为南美洲部分地区带来了经济发展，也带来了环境希望和担忧。一个重大的希望在于巴西的农业部门与亚马逊地区的森林砍伐脱钩，在这种情况下，扩张的农业不一定意味着森林退化。然而，人们也对农业的潜在间接影响表示担忧。本文论述了自2002年以来对巴西亚马逊的间接影响。我们的研究发现，多达32%的森林砍伐，或超过30，000平方公里的亚马逊森林的损失，间接归因于巴西的大豆部门。然而，我们也注意到，自2006年以来，农业部门对亚马逊森林损失的间接影响程度明显下降。我们还发现，在亚马逊地区的间接土地利用变化的根本原因的转变，并建议在农业地区的土地升值已取代农场扩张作为间接土地利用变化的来源。我们的研究结果与最近的工作基本一致，这些工作承认政策变化在减轻大豆扩张对亚马逊森林损失的影响方面取得了成功。不过，他们也警告称，大豆行业可能会继续通过对区域土地市场的影响来激励土地清理。
Soybean farming has brought economic development to parts of South America, as well as environmental hopes and concerns. A substantial hope resides in the decoupling of Brazil's agricultural sector from deforestation in the Amazon region, in which case expansive agriculture need not imply forest degradation. However, concerns have also been voiced about the potential indirect effects of agriculture. This article addresses these indirect effects forthe case of the Brazilian Amazon since 2002. Our work finds that as much as thirty-two percent of deforestation, or the loss of more than 30,000 km2 of Amazon forest, is attributable, indirectly, to Brazil's soybean sector. However, we also observe that the magnitude of the indirect impact of the agriculture sector on forest loss in the Amazon has declined markedly since 2006. We also find a shift in the underlying causes of indirect land use change in the Amazon, and suggest that land appreciation in agricultural regions has supplanted farm expansions as a source of indirect land use change. Our results are broadly congruent with recent work recognizing the success of policy changes in mitigating the impact of soybean expansion on forest loss in the Amazon. However, they also caution that the soybean sector may continue to incentivize land clearings through its impact on regional land markets.
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DOI：
10.1073/pnas.1307163111
发表时间：
2014-05-20
影响因子：
11.1
作者：
Cohn, Avery S.;Mosnier, Aline;Obersteiner, Michael
通讯作者：
Obersteiner, Michael
影响因子：
56.9
作者：
Fargione, Joseph;Hill, Jason;Hawthorne, Peter
通讯作者：
Hawthorne, Peter
影响因子：
6.7
作者：
Barona, Elizabeth;Ramankutty, Navin;Coomes, Oliver T.
通讯作者：
Coomes, Oliver T.
DOI：
10.1016/j.gloenvcha.2013.09.007
发表时间：
2013-12-01
影响因子：
8.9
作者：
Gasparri, N. I.;Grau, H. R.;Gutierrez Angonese, J.
通讯作者：
Gutierrez Angonese, J.
影响因子：
1
作者：
Jepson, Wendy
通讯作者：
Jepson, Wendy