阔叶红松林物种多样性与地上碳储量的动态关系研究

生物多样性与地上碳储量的关系是一个动态过程，是森林多目标经营亟需解决的重要问题。利用静态数据揭示当前现象的研究方法导致生物多样性与地上碳储量关系存在一定争议，同时，影响生物多样性-地上碳储量动态关系的关键因子尚不明确。本研究拟以吉林蛟河已建立的不用龄级阔叶红松林固定样地为研究对象，基于树轮数据、固定样地监测数据和异速生长方程重建单木碳储量年际变化，检验年龄/径级对单木碳储量的影响，结合物种生理特征量化固碳贡献能力的物种差异性；构建地上碳储量和物种多样性测量指标（丰富度，均匀度，多样性指数）动态，检验物种多样性-地上碳储量是否存在动态关系，若存在，将物种多样性测量指标与固碳贡献能力的物种差异性相结合，判定影响阔叶红松林物种多样性-地上碳储量动态关系的关键因子，建立物种多样性-地上碳储量的动态关系模型。研究结果将为制定科学有效的森林多目标经营措施提供理论依据，对碳汇林业的发展具有重要指导意义。

The effect of species diversity on the forest above-ground carbon storage varying over time, plays an important role for forest multi-target management. There is a strong and lasting debate over the relationship between the biodiversity and above-ground carbon storage caused by using the method of revealing the current phenomenon with static data. Few evidences support what element of biodiversity matters to above-ground carbon storage. The objective of the present study is to investigate the dynamic relationship between biodiversity and above-ground carbon storage over different age-class of broad-leaved Korean pine forest established in Jiaohe, Jilin province. Tree-ring data and permanent plot survey data as well as allometric growth model are utilized to reconstruct the interannual increment of above-ground carbon storage for individual tree in order to test the age/size-related impact. The carbon sequestrations among species are quantified combining with their physiological characteristics. The history of species diversity index and above-ground carbon storage are developed to examine whether there is a dynamic relationship between species diversity and above-ground carbon storage. If there is, the key elements influencing the dynamic relationship between species diversity and above-ground carbon storage are explored according to specific carbon sequestrations and species diversity index and used to model the dynamic relationship between the species diversity and above-ground carbon storage. This study provides the theory basis for formulation of scientific and effective forest multi-target management, and has a considerable guiding significance to the development of forestry carbon sequestration.