自然保护区森林生态系统固碳释氧价值评估——以陕西长青自然保护区为例

Value Assessment on the Carbon Fixation and Oxygen Release of the Nature Reserve Forest Ecosystem——A Case Study of Shaanxi Changqing Nature Reserve

本文基于长青保护区2009年森林资源规划设计调查数据,依据行业标准《森林生态系统服务功能评估规范(LY/T 1721-2008)》,计算森林生态系统固碳释氧的实物量和经济价值。结果表明,截至2009年,(1)长青保护区森林生态系统年固碳量为108 082.347 t,释氧量为289 353.733 t,单位面积年固碳量为3.892 t·hm^(-2)·a^(-1),单位面积年释氧量为10.420 t·hm^(-2)·a^(-1)。(2)长青保护区各类森林单位面积固碳释氧价值量大小顺序依次为:灌木林>林分>竹林>疏林地。其中,灌木林单位面积森林固碳释氧价值量最大,为4.16×10~3元;疏林地最小,为2.14×10~3元。(3)长青保护区森林生态系统年固碳价值量为1.05亿元,释氧价值量为2.89亿元,总价值3.94亿元。(4)不同类型的森林单位面积固碳释氧价值量大小顺序与森林平均生产力变化趋势一致。

In this paper, based on the forest resources inventory and planning survey data of Changqing nature reserve in 2009 and Specifications for Assessment of Forest Ecosystem Services in China(LY/T 1721-2008), a calculation was made on the material volume and economic value of the carbon fixation and oxygen release by the nature reserve forest ecosystem. The results showed that, by the end of2009, 1. the estimated carbon fixation per year was 1.081×105 t in Shaanxi Changqing Nature Reserve, with 2.894×105 t oxygen release per year. The carbon fixation per unit area per year was 3.892 t·hm^(-2)·a^(-1) and the oxygen release per unit area per year was 10.420 t·hm^(-2)·a^(-1). 2.The value sequence of the forest types in carbon fixation and oxygen release in the reserve was shrubbery >forest stand >bamboo forest >sparse woodland, of which the shrubbery had the highest value of 4.161×10~3 yuan per ha area in carbon fixation and oxygen release while the sparse woodland had the lowest value of 2.141 ×10~3 yuan per ha. 3. the carbon fixation value per year in Shaanxi Changqing Nature Reserve was 1.05×10~8 yuan, oxygen release per year was 2.89×10~8 yuan and the total value was 3.94×10~8 yuan. 4. The value sequence of the forest types in carbon fixation and oxygen release and the variation tendency of the forest average productivity were consistent.