基于林分生长过程的辽东山区森林植被固碳潜力及其价值研究

利用基于林分生长过程的Richards生长方程以及蓄积量转换生物量模型,评估了辽宁冰砬山长白落叶松人工林和蒙古栎天然次生林两种典型森林类型4个龄级的植被固碳速率、固碳潜力和潜在固碳价值。研究结果表明:两种森林的单位面积植被固碳潜力总体上都是随着龄级的增加单位面积植被固碳潜力在增加。除中龄林外,长白落叶松人工林各个龄级的植被单位面积固碳潜力均比蒙古栎天然次生林大。长白落叶松人工林各龄级森林植被单位面积潜在固碳价值在2 113~9 656元,蒙古栎天然次生林在1 594~4 195元。长白落叶松人工林2000年和2005年的固碳潜力分别为14和11 Gg·a-1,潜在固碳价值分别为1 700和1 300万元·a-1,与2000年相比,2005年固碳潜力和潜在固碳价值都有所降低;蒙古栎天然次生林2000年和2005年的固碳潜力分别为4.8和5.4 Gg·a-1,潜在固碳价值分别为600和700万元·a-1,与2000年相比,2005年固碳潜力和潜在固碳价值都有所增加。

Studies on carbon sequestration potential of forest vegetation and its values based on stand growth process in the mountain area of eastern Liaoning

Carbon sequestration rates, carbon sequestration potential and carbon sequestration value of vegetations in four age classes of two classic forest types i.e. Larix olgensis plantation and Quercus mongolica natural secondary forest were evaluated by Richards model and volume converted to biomass model which were based on stand growth process. The results indicated that in the two forest types,the carbon sequestration potential per unit area was increased with the age. Except in middle age stands,carbon sequestration potential in all age stands of Larix olgensis was larger than that of Quercus mongolica. Carbon sequestration values per unit area in four age classes of Larix olgensis plantation and Quercus mongolica natural secondary forest were 2,113~9,656 RMB and 1, 594~4,195 RMB, respectively. In 2000 and 2005, the carbon sequestration potentials in Larix olgensis plantation were 14 and 11 Gg·a-1 re-spectively and the carbon sequestration value were 17 and 13 million RMB·a-1,respectively. Carbon sequestration potential and car-bon sequestration value in 2005 were lower than those in 2000.In 2000 and 2005,the carbon sequestration potentials in Quenus mo-golica natural secondary forest were 4.8 and 5.4 Gg · a-1 respectively and the carbon sequestration valve were 6 and 7 million RMB · a-1,respectively carbon sequestration potential and carbon sequestration value in 2005 were higher than those in 2000.