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首页> 外文期刊>African Journal of Biotechnology >Estimating carbon emissions from forest fires during 1980 to 1999 in Daxingan Mountain, China
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Estimating carbon emissions from forest fires during 1980 to 1999 in Daxingan Mountain, China

机译：估算1980年至1999年中国大兴安岭森林火灾的碳排放

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摘要

A large number of carbons are?released into the atmosphere from forest fires per year, which has a significant influence on carbon cycle and storage. In this study, we examined the spatio-temporal patterns of forest fires from 1980 to 1999 in Daxing’an Mountain of Heilongjiang Province, China and estimated the carbon emissions from forest fires based on both field research and laboratory experiments. The results show that (1) burned areas of larch (Larix gmelinii?Rupr.), Mongolian pine (Pinus sylvestris L.?var. mongolica?Litv.), white birch (Betula platyphylla?Suk.), mixed broadleaved-conifer (L. gmelinii & B. platyphylla) and Mongolian oak (Quercus mongolica?Fish.) forests were 437 947, 20 939, 142 527, 168 532 and 1 375 hm2?during 1980 to 1999 period, respectively. The fuel consumed based on these forests were 29.0 to 46.5, 16.7 to 26.5, 18.1 to 26.5, 31.9 to 51.4 and 24.5 to 40.3 Mg hm-2, respectively; (2) the total carbon emissions from forest fires of the forest types in Daxing’an Mountain was 3.8 to 5.9 Tg during this period. Two thirds of the total amounts were caused by larch forests, while 1/4 came from white birch forests and the rest from other forest types; (3) the amounts of CO2?released from forest fires for these 20 years were 13.9 to 21.6 Tg. The estimates were incomplete or could be low because the emissions from the burning of dead organic matter (litter, dead wood, etc.) were not included in this calculation and therefore, the net carbon balance?was?calculated.
机译：每年森林火灾将大量的碳释放到大气中，这对碳的循环和储存有重大影响。在这项研究中，我们研究了1980年至1999年中国黑龙江省大兴安岭森林火灾的时空格局，并根据实地研究和实验室实验估算了森林火灾的碳排放量。结果表明：（1）烧毁了落叶松（Larix gmelinii？Rupr。），蒙古松（Pinus sylvestris L.?var。mongolica？Litv。），白桦（Betula platyphylla？Suk。），混合阔叶针叶树（在1980年至1999年期间，蒙古落叶松（L. gmelinii＆B. platyphylla）和蒙古栎（Quercus mongolica？Fish。）森林分别为437 947、20 939、142 527、168 532和1 375 hm2。这些森林的燃料消耗量分别为29.0至46.5、16.7至26.5、18.1至26.5、31.9至51.4和24.5至40.3 Mg hm-2; （2）在此期间，大兴安岭森林类型的森林火灾产生的碳排放总量为3.8至5.9 Tg。总量的三分之二是落叶松林造成的，而1/4来自白桦林，其余的则来自其他森林类型。 （3）在这20年中，森林火灾释放的CO2？量为13.9至21.6 Tg。估算不完整或可能很低，因为此计算中不包括燃烧死有机物（垃圾，枯木等）的排放，因此计算了净碳平衡。

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