气候变化领域集成服务门户(CCPortal): Global demand for steel drives extensive land-use change in Brazil's Iron Quadrangle

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DOI	10.1016/j.gloenvcha.2014.03.014
	Global demand for steel drives extensive land-use change in Brazil's Iron Quadrangle
	Sonter L.J.; Barrett D.J.; Soares-Filho B.S.; Moran C.J.
发表日期	2014
ISSN	0959-3780
卷号	26 期号:1
英文摘要	Global demand for minerals is often considered an insignificant driver of land-use change because mines are small. We (1) investigated evidence supporting a link between global demand for steel and land-use change in Brazil's Iron Quadrangle, and (2) quantified the extent of land-use change and associated impacts on native vegetation. Historic land-use change was quantified using Landsat TM, relationships between demand for steel and land-use change were investigated using a simple linear model, and future scenarios were simulated using a calibrated land-use change model. Results support our hypothesis that global demand for steel drives extensive land-use change in the Iron Quadrangle, where increased steel production was correlated with increased iron ore production and mine expansion, and with increased charcoal production and plantation expansion. The direct impacts of mining on native vegetation were disproportionate to their relatively small spatial extent, while direct impacts of plantations were spatially extensive, as were their impacts on surrounding native vegetation. Additionally, evidence of two indirect impacts emerged during 1990-2010. Plantation expansion decreased native forest regrowth, while competition for land between mining companies and urban developers increased deforestation pressures. In combination, global demand for steel affected the majority of land in the Iron Quadrangle; however, many impacts were poorly captured by current land management approaches. Similar processes may operate in other mining regions, where global demand for minerals drives production of multiple resources (non-renewable and renewable) and thus extensive land-use change. © 2014 Elsevier Ltd.
英文关键词	Atlantic Forest; Charcoal; Deforestation; Mining; Plantations; Regrowth
学科领域	calibration; charcoal; iron and steel industry; iron ore; land management; land use change; Landsat; mining industry; nonrenewable resource; plantation; regrowth; renewable resource; urban development; Atlantic Forest; Brazil; Iron Quadrangle; Minas Gerais
语种	英语
scopus关键词	calibration; charcoal; iron and steel industry; iron ore; land management; land use change; Landsat; mining industry; nonrenewable resource; plantation; regrowth; renewable resource; urban development; Atlantic Forest; Brazil; Iron Quadrangle; Minas Gerais
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117785
作者单位	The University of Queensland, Sustainable Minerals Institute, Centre for Water in the Minerals Industry, Qld 4072, Australia; CSIRO Land and Water, Water in the Resources Sector, ACT 2601, Australia; Universidade Federal de Minas Gerais, Centro de Sensoriamento Remoto, MG 31270-900, Brazil; The University of Queensland, Sustainable Minerals Institute, Qld 4072, Australia
推荐引用方式 GB/T 7714	Sonter L.J.,Barrett D.J.,Soares-Filho B.S.,et al. Global demand for steel drives extensive land-use change in Brazil's Iron Quadrangle[J],2014,26(1).
APA	Sonter L.J.,Barrett D.J.,Soares-Filho B.S.,&Moran C.J..(2014).Global demand for steel drives extensive land-use change in Brazil's Iron Quadrangle.Global Environmental Change,26(1).
MLA	Sonter L.J.,et al."Global demand for steel drives extensive land-use change in Brazil's Iron Quadrangle".Global Environmental Change 26.1(2014).