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以2009年休宁县森林资源二类调查数据为基础,运用基于生物量和蓄积量之间关系的生物量转换因子连续函数法,对休宁县的主要树种生物量、碳储量和碳汇价值进行了估计。结果表明:休宁县林分主要树种为杉木、栎类、马尾松、槠类和枫香,其中杉木林分面积占林分总面积的56.0%,占优势地位。中幼林面积占林分总面积的71.0%,成过熟林面积占林分总面积的29.0%。主要树种生物量为476.92万t,碳储量为238.46万t,碳汇价值为1.5亿元人民币。林分单位面积生物量为45.30 t.hm-2,平均碳密度为22.65 t.hm-2。林分单位面积生物量和碳密度都低于全国平均水平。因此,休宁县具有很大的碳汇潜力。
Based on the second survey data of forest resources in Xiuning County in 2009, using biomass conversion factor continuous function method based on the relationship between biomass and stock volume, the biomass, carbon storage and carbon sink value of main tree species in Xiuning County were studied estimate. The results showed that the main tree species in the forest of Xiuning County were Chinese fir, oak, Pinus massoniana, Siberian catfish and Liquidambar formosana. Among them, the area of Chinese fir forest accounted for 56.0% of the total area of forest stand. The area of young and middle-aged forest accounted for 71.0% of the total area of forest, over-mature forest area accounted for 29.0% of the total area of forest. The main tree species biomass is 476.92 million tons, carbon storage is 238.46 million tons, carbon sink value is 150 million yuan. The stand biomass per unit area was 45.30 t.hm-2, and the average carbon density was 22.65 t.hm-2. Forest stand biomass per unit area and carbon density are below the national average. Therefore, Xiuning County has great potential for carbon sinks.