基于森林资源一类清查数据的中国森林碳贮量估算

Estimation of forest carbon storage in China based on data of National Inventory of Forest Resources

为了解我国森林资源状况,以建国以来森林资源一类清查数据为基础,分析了建国以来我国森林面积、森林蓄积量和森林碳贮量的变化,并估算2020年时的森林状况。结果显示:1)自建国以来,我国森林面积共增加8821万hm2,森林蓄积量共增加66.21亿m3。但各区域增量不均衡,西南地区森林面积和蓄积量增量最大,东北地区森林面积增量最小,华东地区森林蓄积量增量最小。我国未来森林面积增长潜力在北方地区。2)建国以来,我国森林共吸收碳225.32×108 t,其中人工林碳贮量比例由调查初期的5.3%增加到了16.7%,有较大的碳汇潜力。3)2020年时我国森林面积、蓄积量和碳贮量分别可达20 667万hm2、188.37亿m3和344.766 0亿t,采取科学合理的经营措施可增加我国森林碳贮量。

In order to understand forest resources situation in our country, based on the data of 1-class National Inventory of Forest Resources, the changes of forest area, volume and forest carbon capacity in China since the founding of the People’s Republic of China were analyzed, and the state of forests in 2020 was pre-estimated. The results show that （1） Forest areas increased 88 210 thousand hm2, and forest reserves raised 6.621 billion m3; But the increments in different regions were imbalance, the forest area and reserves increments were the largest in southwest, in northeast area, forest area increment had minimum value, while the forest reserves increment had minimum value in east China; The increasing potential of forest areas will be in the northern China. （2） Since 1973, China forests absorbed carbon 22.532 billion tons, of that, the artiifcial forest’s absorbed carbon raised to 16.7% from 5.3% and had a major potential. （3） By 2020, all of forest areas, forest reverses and forest carbon storage will reach 206.67 million hm2, 18.837 billion m3 and 37.476 6 billion tons respectively. Scientiifc and reasonable management measures could increase forest carbon capacity in China.