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Economic and social constraints on reforestation for climate mitigation in Southeast Asia
Nature Climate Change ( IF 30.7 ) Pub Date : 2020-08-17 , DOI: 10.1038/s41558-020-0856-3
Yiwen Zeng , Tasya Vadya Sarira , L. Roman Carrasco , Kwek Yan Chong , Daniel A. Friess , Janice Ser Huay Lee , Pierre Taillardat , Thomas A. Worthington , Yuchen Zhang , Lian Pin Koh

As climate change continues to threaten human and natural systems, the search for cost-effective and practical mitigation solutions is gaining momentum. Reforestation has recently been identified as a promising nature-based climate solution. Yet there are context-dependent biophysical, financial, land-use and operational constraints to reforestation that demand careful consideration. Here, we show that 121 million ha of presently degraded land in Southeast Asia, a region noted for its significant reforestation potential, are biophysically suitable for reforestation. Reforestation of this land would contribute 3.43 ± 1.29 PgCO2e yr−1 to climate mitigation through 2030. However, by taking a combination of on-the-ground financial, land use and operational constraints into account, we find that only a fraction of that mitigation potential may be achievable (0.3–18%). Such constraints are not insurmountable, but they show that careful planning and consideration are needed for effective landscape-scale reforestation.



中文翻译:

东南亚造林对缓解气候变化的经济和社会制约

随着气候变化继续威胁着人类和自然系统,寻求具有成本效益的实用减灾解决方案的势头日益增强。最近,重新造林被认为是一种有前途的基于自然的气候解决方案。然而,造林还存在与环境有关的生物物理,财务,土地利用和运营方面的限制,需要仔细考虑。在这里,我们表明,东南亚地区目前退化的土地中有1.21亿公顷是因其具有巨大的再造林潜力而闻名的地区,从生物学上讲,它适合再造林。这片土地的重新造林将贡献3.43±1.29 PgCO 2 e yr -1到2030年的减缓气候变化。但是,通过综合考虑实地财务,土地使用和运营限制因素,我们发现减缓潜力中只有一小部分是可以实现的(0.3-18%)。这样的限制不是无法克服的,但是它们表明,要有效地进行景观规模的造林,必须进行仔细的规划和考虑。

更新日期:2020-08-17
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