湖南省1999-2013年森林植被碳储量变化研究

Changes of forest vegetation carbon storage in Hunan Province during 1999-2013

为研究湖南省1999-2013年间森林植被碳储量的动态变化,本文以湖南省1999-2003年、2004-2008年和2009-2013年3次森林资源连续清查资料数据为基础,采用森林植被生物因子计算法,对湖南省近年来森林植被的碳储量和碳密度进行了估算和分析。结果表明:2013年,湖南省森林植被碳储量为30 070.1万t,其中天然林植被主要以中龄林、幼龄林和近熟林存在,其碳储量有进一步增加的空间和潜力;湖南省森林植被碳密度随着树种的不同而变化,较大的有阔叶树、竹林、针叶树、针阔混和栎类;湖南省天然林中碳储量较大的树种为阔叶树、竹林、针叶树和针阔混,表明这些树种对湖南森林植被碳汇能力具有极其重要的作用。

In order to study the changes of forest vegetation carbon storage in Hunan Province during 1999-2013, the carbon storage and carbon density of forest vegetation in Hunan Province were estimated and analyzed, which based on the forest resources inventory data in Hunan Province （ 1999-2003, 2004-2008, 2009-2013 ） and Biomass Expansion Factor （ BEF ） method. The results showed that： the carbon storage of forest vegetation in Hunan Province was 30.07 million t in 2013. The mid-aged forest, young forest, near-mature forest types were the mainly contributors of carbon storage in natural forest, it indicated that the carbon storage had not reached the maximum and was expected to increased. The carbon densities were various among different forest species, the elevated carbon densities were found in broad- leaved tree, bamboo, needle-leaved tree, theropencedrymion and Quercus. The elevated carbon storage in natural forest were found in broad-leaved tree, bamboo, needle-leaved tree and theropencedrymion, which indicated that these types of natural forests were of great significance in forest carbon sink of Hunan Province.