鸡公山自然保护区森林植被生物量及活碳蓄积量研究

运用鸡公山科学考察资料及1999年森林资源清查资料,采用森林材积源生物量推算方法研究了鸡公山森林植被生物量及其活碳蓄积量。结果表明:鸡公山森林植被生物量总值为309 202t,平均森林植被生物量为111.7t／hm2,高于全国平均水平(77.4t／hm2);鸡公山森林植被的总活碳蓄积量为154 601t,平均活碳密度为56MgC／hm2,高于中国森林植被活碳密度的平均水平(38.7 MgC／hm2),但低于全球平均碳密度(86MgC／hm2)。不同林型活碳蓄积密度分析结果表明,马尾松、杉木和栎类林木的活碳蓄积密度分别为30MgC／hm2,39 MgC／hm2和70MgC／hm2,均高于全国同类型森林植物的活碳蓄积密度的平均值,而次生阔叶混交林的碳蓄积密度略低于全国平均水平。鸡公山自然保护区67％的森林为中龄林,27％的森林为幼龄林,在增加碳蓄积方面还有巨大的潜力。

A Study on the Biomass and Live Carbon Storage of the forest vegetation in the Jigongshan Mountain Natural Reserve

Methodologies for evaluating biomass, live carbon storages of forest vegetation from stem volume of stands were introduced in this paper, and the biomass , live carbon storages in Jigongshan Mountain Natural Reserve were estimated. The research result showed that the total biomass of forest vegetation in jigongshan Mountain Natural Reserve in 1999 was 309 202, and the total livecarbon storages in 1999 was 154 601t. The average biomass(111.7t/hm2, 1999)in Jigongshan Mountain Reserve was higher than the mean value(77.4t/hm2,1998)of China, and the average carbon density was 56 MgC/ hm2, which as higher than the mean value(38. 7tMgC/hm2, 1998) of China. The middle-aged and young forest vegetation make up 94% of the total forest vegetation in Jigongshan Mountain Natural Reserve, which reflects there are a great potential carbon sink in future if the current forest is managed well.