Changes in forest biomass carbon storage in China between 1949 and 1998
Changes in forest biomass carbon storage in China between 1949 and 1998
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DOI：
10.1126/science.1058629
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发表时间：
2001-06-22
期刊：
影响因子：
56.9
通讯作者：
Ci, L
中科院分区：
文献类型：
--
作者：
Fang, JY;Chen, AP;Ci, L
北方中纬度地区碳汇的位置和机制尚不确定。本文采用改进的森林生物量估算方法和中国50年森林资源清查资料，估算了1949 - 1998年中国森林生物量储量的变化。我们的研究结果表明，中国森林释放约0.68 petagram的碳在1949年和1980年之间，每年的碳排放率为0.022 petagram。20世纪70年代后期后，碳储量显着增加，从4.38到4.75 petagram的碳，到1998年，平均每年0.021 petagram的碳积累率，主要是由于森林扩张和再生。自20世纪70年代中期以来，（造林和再造林）已经固碳0.45拍德拉姆，其平均碳密度从每公顷15.3兆克增加到31.1兆克，而天然林则额外损失了0.14拍德拉姆的碳，这表明，通过京都议定书中提到的森林管理措施进行碳封存，可以帮助抵消工业二氧化碳排放
The Location and mechanisms responsible for the carbon sink in northern mid-latitude Lands are uncertain. Here, we used an improved estimation method of forest biomass and a 50-year national forest resource inventory in China to estimate changes in the storage of Living biomass between 1949 and 1998. Our results suggest that Chinese forests released about 0.68 petagram of carbon between 1949 and 1980, for an annual emission rate of 0.022 petagram of carbon. Carbon storage increased significantly after the Late 1970s from 4.38 to 4.75 petagram of carbon by 1998, for a mean accumulation rate of 0.021 petagram of carbon per year, mainly due to forest expansion and regrowth. Since the mid-1970s, planted forests (afforestation and reforestation) have sequestered 0.45 petagram of carbon, and their average carbon density increased from 15.3 to 31.1 megagrams per hectare, while natural forests have Lost an additional 0.14 petagram of carbon, suggesting that carbon sequestration through forest management practices addressed in the Kyoto Protocol could help offset industrial carbon dioxide emissions.