我国天然橡胶生产的碳排放特征及因素分解——以海南农垦为例

Characteristics and factor decomposition of carbon emission from Chinese natural rubber——A case of Hainan State Farms

【目的】测算2002～2009年海南农垦天然橡胶单位产品、面积碳排放量,探讨影响碳排放的主要因素,并对碳排放量进行因素分解。【方法】利用海南农垦天然橡胶生产的投入产出数据、Kaya恒等式进行测算和分解。【结果】化肥、燃料、农药、电力是最重要的投入品;橡胶林地单位面积碳排放量高于农地,单位产品碳排放量与自然灾害密切相关;产值效率的提高是碳减排的主要因素,规模效应是碳排放增加的主要原因,结构效应则是影响碳排放的关键性因素。【建议】应减少化肥的使用量、优化天然橡胶初级产品加工工艺、减少用电量、提高橡胶林的抗风能力,以减少橡胶生产碳排放。

Objective Carbon emission per unit of natural rubber product and per area in Hainan State Farms in 2002-2009 was measured to study the important influencing factors and their decomposition for carbon emission. Method The in-put-output data of natural rubber in Hainan State Farms were used for calculation and decomposition based on Kaya identical equation. Conclusion Fertilizer, fuel, pesticides, and electricity were the most important inputs. Carbon emission per unit area was higher than that of agricultural land. Carbon emission per unit product was strongly related to natural disasters. Production efficiency improvement was the dominant factor for carbon emission reduction, and the scale effect was the main reason for increasing, while the structure effect was a critical factor. SuggestionTo cut carbon emission from rubber production, it is proposed to reduce fertilizer use, optimize processing technique of primary natural rubber products, use less power, and strengthen the wind resistance of rubber plantation.