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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Toward a whole-landscape approach for sustainable land use in the tropics
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Toward a whole-landscape approach for sustainable land use in the tropics

机译：向热带地区寻求可持续发展的全景观方法

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摘要

Increasing food production and mitigating climate change are two primary but seemingly contradictory objectives for tropical landscapes. This special feature examines synergies and trade-offs among these objectives. Four themes emerge from the papers: the important roles of both forest and agriculture sectors for climate mitigation in tropical countries; the minor contribution from deforestation-related agricultural expansion to overall food production at global and continental scales; the opportunities for synergies between improved food production and reductions in greenhouse gas emissions through diversion of agricultural expansion to already-cleared lands, improved soil, crop, and livestock management, and agroforestry; and the need for targeted policy and management interventions to make these synergistic opportunities a reality. We conclude that agricultural intensification is a key factor to meet dual objectives of food production and climate mitigation, but there is no single panacea for balancing these objectives in all tropical landscapes. Place-specific strategies for sustainable land use emerge from assessments of current land use, demographics, and other biophysical and socioeconomic characteristics, using a whole-landscape, multisector perspective.
机译：粮食生产的增加和气候变化的缓解是热带景观的两个主要但看似矛盾的目标。此特殊功能检查了这些目标之间的协同作用和取舍。这些论文提出了四个主题：森林和农业部门在热带国家减缓气候变化中的重要作用；与毁林有关的农业扩张对全球和大陆范围的总体粮食生产的贡献很小；通过将农业扩张转移到已经开垦的土地，改善土壤，作物和牲畜管理以及农林业，在提高粮食产量和减少温室气体排放之间产生协同增效的机会；并且需要有针对性的政策和管理干预措施，以使这些协同机会成为现实。我们得出结论，农业集约化是实现粮食生产和减缓气候双重目标的关键因素，但是在所有热带景观中都没有一个平衡这些目标的灵丹妙药。可持续发展土地使用的针对特定地点的策略是从目前的土地利用，人口统计数据以及其他生物物理和社会经济特征的评估中得出的，采用的是全地形，多部门的视角。

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    R. DeFries; C. Rosenzweig;

  • 作者单位

    Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027;

    rnNational Aeronautics and Space Administration Goddard Institute of Space Studies, New York, NY 10025;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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