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森林碳汇能力对减缓全球气候变化是一个关键因素。本文以2002年和2012年武隆县森林资源二类清查资料为基础,运用森林蓄积量与生物量关系为基础植物碳估量方法和生态经济计量方法,系统地分析了武隆县林地结构性森林资源的储碳效应。结果表明:2002年—2012年期间,(1)全县林地(未包含灌木林地)的森林储碳总量由663078t上升到1089993t,平均每年上升426915t的碳储量;相应地森林固碳价值由59667×10~4元增加到98099×10~4元,平均每年增加38422×10~4元,这些主要归结于退耕还林工程和天然保护林工程的实施;(2)全县林地(未包含灌木林地)的单位面积森林植被储碳量由7.76t/hm~2下降到7.64t/hm~2,平均每年下降0.013t/hm~2。这表明疏林地、中龄林和用材林在碳储量方面还有更大的提升空间,对于区域保护森林资源和政策制定有重要推动作用。
Forest carbon sequestration capacity is a key factor in slowing global climate change. Based on the second type of inventory data of forest resources in Wulong County in 2002 and 2012, using the method of carbon sequestration and eco-economic measurement based on the relation between forest volume and biomass, this paper systematically analyzes the structural forest of Wulong County Carbon storage effect of resources. The results showed that: (1) The total forest carbon storage in the whole county’s forest land (excluding shrub land) increased from 663078t to 1089993t, with an average annual increase of 426915t carbon storage; Correspondingly, the forest carbon sequestration value increased from 59667 × 10 ~ 4 yuan to 98099 × 10 ~ 4 yuan, an average increase of 38422 × 10 ~ 4 yuan per year, mainly due to the implementation of the project of returning farmland to forestry and natural protection forest; (2) Forestland) per unit area decreased from 7.76t / hm2 to 7.64t / hm2, with an average annual decrease of 0.013t / hm2. This shows that there is still much room for improvement in the area of carbon storage in the middle-aged and middle-aged forests and timber forests, which plays an important role in promoting the regional protection of forest resources and policy making.