我国暖温带森林碳储量特点研究——以北京、河北为例

Characteristics of Carbon Storage in Warm Temperate Forests in China:A Case Study of Beijing and Hebei

本文为探究暖温带地区森林生态系统碳储量特点及其成因,在河北、北京地区选取了160个森林样地,对样地的乔木层、灌木层、草本层、凋落物层以及土壤层进行了野外实地调查并取样在实验室做相关分析。结果表明:河北、北京地区总碳储量为448.07 Tg,植物层碳储量为94.82 Tg,土壤层碳储量为353.25 Tg。土壤层碳储量要远高于植被层,它是河北、北京地区森林碳储量的主要贡献者。区域平均碳密度为287.51 Mg·hm^(-2),植被层为60.84 Mg·hm^(-2),土壤层为226.67 Mg·hm^(-2),土壤层同样大于植被层。不同林型进行比较,地上层碳储量最大的林型为桦树林,地上层碳密度最大的林型是松林;土壤层桦树林和落叶松林碳密度最大,槐树林碳密度最小。在未来的碳相关政策的制定时,可以选择合适的林型,增大种植面积,以提高区域碳储量和碳密度总值。

In order to explore the status of carbon storage and carbon density of forest ecosystems in warm temperate region of China,160 forest plots were selected in the research area.Samples of shrub layers,herb layers,liter layers and soil layers were acquired in the field and relevant analysis were conducted in the laboratory.The results showed that the total carbon storage in Hebei and Beijing is 448.07 Tg,among which the soil layer occupied the most as 353.25 Tg and the plant layer owns the rest as 94.82 Tg.The regional average carbon density was 287.51 Mg·hm^(-2),the vegetation layer was 60.84 mg/hm^(-2),the soil layer was 226.67 mg/hm^(-2),the soil layer was also larger than the vegetation layer.Compared with different forest types,Birch forest was the largest forest type with the largest aboveground carbon storage,and the pine forest with the largest aboveground carbon density.In soil layer,the carbon density of birch forest and larch forest was the highest,and that of Sophora japonica forest was the lowest.In the future,we can choose the suitable forest type and increase the planting area to improve the regional carbon storage and carbon density.