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Reducing Carbon Emissions through Improved Forest Management in Cambodia

机译：通过改善柬埔寨的森林管理减少碳排放

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Carbon emissions from selectively logged forests in the tropics are strongly affected by logging practices. Although tropical forests are mainly managed under the concession system, only a handful of studies were done to assess the impact of logging practices on emission reductions and future timber supply. In this report, carbon stocks, timber supply, and carbon emission reductions under conventional logging (CVL), reduced-impact logging (RIL), and RIL with special silvicultural treatments (RIL+) were assessed in 3.4 million ha of concession forests for a 55-year project time span. Carbon emissions under a 25-year CVL practiced in Cambodia were estimated at 12.4 TgCO2 year-1 for 55 years. We then tested four cutting cycles of selective logging and our results suggest that a 45-year selective cutting cycle was appropriate for managing concession forests in Cambodia in terms of maintaining commercial timber supply and reducing carbon emissions. By considering RIL or RIL+ as a new logging practice for improving forest management in the tropics, carbon credits from selective logging in Cambodia were estimated at 6.2 - 7.9 TgCO2 or about $31.0 - 39.5 million annually if carbon is priced at $5. It is concluded that RIL or RIL+ should be adopted for “sustainable management of forests” element of the REDD+ scheme.
机译：热带地区选择性采伐森林的碳排放受到采伐方式的强烈影响。尽管热带森林主要在特许经营制度下进行管理，但仅进行了少量研究来评估伐木方式对减排和未来木材供应的影响。在此报告中，在55公顷的特许经营森林中，评估了传统伐木（CVL），减少冲击伐木（RIL）和经过特殊造林处理（RIL +）的RIL的碳储量，木材供应量和碳排放量，包括55年项目时间跨度。柬埔寨实行的25年CVL下的碳排放量估计为55年的12.4 TgCO2年-1。然后，我们测试了选择性伐木的四个采伐周期，我们的结果表明，从维持商业木材供应和减少碳排放方面来看，45年的选择性采伐周期适合管理柬埔寨的特许森林。通过考虑将RIL或RIL +作为改善热带森林管理的新方法，柬埔寨选择性伐木产生的碳信用额估计为6.2至7.9 TgCO2，如果碳价为5美元，则每年可获得约31.0至3950万美元。结论是REDD +计划的“森林可持续管理”要素应采用RIL或RIL +。

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