黑龙江省森林碳储量的动态变化分析

Dynamic Change Analysis of the Forest Carbon Storage in Heilongjiang Province

以黑龙江省二十余种树木为研究对象,对比研究林分与林龄,在2003—2013年连续三次森林资源清查数据的基础上,采用生物量转换因子连续函数法和平均生物量法计算出不同种类、不同林龄、不同起源的森林资源碳储量及碳密度,并进一步分析其动态变化及分布特征,以找寻合适树种进行保护与扩增。结果表明:①从植被类型的角度来看,乔木林碳储量最多,为661.78 Tg,其碳密度也最高,为33.94Mg/hm2;②不同林龄的乔木中,中龄林、近熟林的碳储量在不同时期的清查数据中均占有重要地位,共占69.87%;③在不同树种中,阔叶混、落叶松、栎类等树种为黑龙江省森林碳储量主要贡献树种,合计占黑龙江省乔木林碳储量的62.17%;④碳密度方面枫桦、水曲柳、栎类、樟子松等排名靠前;综上所述,阔叶混、落叶松、栎类作为主要碳储量贡献树种,应当进行主要保护,并辅助以其他树种的保护与扩增,提升黑龙江省森林碳储量。

Taking more than 20 kinds of trees as the research object in Heilongjiang Province,this paper used thecontinues Biomass Expansion Factor method and the Mean Biomass Method to calculate the car⁃bon reserves and carbon density of forest resources of different species,different forest ages and different origins based on the data of three consecutive forest resource inventory from 2003 to 2013.Besides,it fur⁃ther analyzeddynamic changes and distribution characteristics of the carbon reserves and carbon density.The results showed that:①from the perspective of vegetation type,the carbon storage of arbor forest is the most,661.78 TG,and its carbon density is also the highest,33.94mg/hm2;②among the arbors of different ages,the carbon storage of middle-aged forest and near mature forest occupies an important position in the inventory data of different periods,accounting for 69.87%;③among the different species,broad-leaved mixed,larch,oak and other species are forest in Heilongjiang Province The main contribution species of forest carbon reserves,accounting for 62.17%of the total carbon reserves of arbor forests in Heilongjiang Province;④Maple birch,Fraxinusmandshurica,Quercus and Pinussylvestris rank top in terms of carbon density.Finally,in conclusion,as the main contribution species of carbon reserves,broad-leaved mixed,larch and Quercus should be mainly protected and assisted with the protection and expansion of other spe⁃cies to improve the forest carbon reserves in Heilongjiang Province.