土地利用变化源于市场对印尼油棕油产量增长的反应
Felix K S Lim1,2,3, Luis Roman Carrasco4, David P Edwards1,3,5
1Grantham Centre for Sustainable Futures, University of Sheffield, Sheffield, UK.
概括
由于市场力量,印尼加大棕油产量可能不会为大自然留出土地. 增加产量可能会导致更多的,而不是更少的棕油扩张,威胁到生物多样性.
科学领域:
- 农业经济学 农业经济学
- 热带生态 热带生态
- 土地使用变化建模模型
背景情况:
- 棕油的扩张是热带森林砍伐的主要驱动因素.
- 强化战略旨在通过提高产量来减少棕油的土地足迹.
- 通过市场力量对土地利用变化的间接影响仍然不太清楚.
研究的目的:
- 为了模拟印度尼西亚的棕油供应和需求.
- 探索产量改善和需求弹性如何影响作物扩张.
- 评估油棕种植密集化对土地使用的间接影响.
主要方法:
- 利用一个空间显式的土地租金建模框架.
- 模拟了产量改善和需求弹性的多个场景.
- 分析了市场平衡的变化及其对预计作物扩张的影响.
主要成果:
- 棕油供应表现出对作物价格和产量增长的敏感性.
- 集约化通常增加了农业租金,降低了土地节约的有效性.
- 产量增加降低了棕油价格,但并没有阻止大多数场景的耕地扩张.
- 只有在高度不弹性的需求和非常低的价格下才观察到显著的土地节约,新种植园仍在扩张.
结论:
- 印度尼西亚棕油的强化可能会加剧森林砍伐和生物多样性丧失.
- 市场力量可以抵消强化节省土地的好处.
- 加强空间规划和执法对于防止进一步的棕油扩张至关重要.
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