基于森林资源连续清查的森林碳储量估算1）--以内蒙古呼伦贝尔地区为例

基于森林资源清查数据，采用联合国政府间气候变化专门委员会（ IPCC）提供的方法对内蒙古呼伦贝尔地区森林碳储量进行核算。结果表明：呼伦贝尔地区森林碳储量5．39×108t；用材林碳储量最大，占区域总碳储量的85％；其次是防护林，占区域总碳储量的11％。不同优势树种森林碳储量差异较大，兴安落叶松和白桦占11个优势树种总碳储量的88％。用材林不同龄组碳储量中，中龄林最大；但在不同龄组间，其碳密度随林龄的增大而增大，成过熟林表现出较大的碳汇能力。应通过森林资源培育保护工程，加强中幼林抚育和经营管理，提高森林质量和碳汇能力，更好地应对气候变化。

Carbon Storage in Hulunbeir Area of Inner Mongolia Based on Continuous Forest Inventory Data

We used the IPCC method to calculate the forest carbon storage in Hulunbuir area of Inner Mongolia with the forest in-ventory data.The forest carbon storage in Hulunbuir area was 5.39×108 t.Timber forest followed by shelter forest had the highest carbon storage, accounting for 85%and 11% of total carbon storage, respectively.Larix gmelinii and silver birch accounted for 88%of total carbon storage in 11 dominant tree species, and the forest carbon storage differed considerably between various dominant tree speices.In different-aged group of timber forest, middle-aged forest resulted in the highest carbon storage, but the carbon density increased with the increasing of forest age, and over-aged forest had the highest car-bon sink capacity.Middle-aged and young forest tending and management, the quality of forest, the capacity of carbon sink and coping with climate change could be improved by forest resource cultivation and protection projects.