A preliminary research on CO_2 release in subtropical karst forest soil
A preliminary research on CO_2 release in subtropical karst forest soil
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发表时间：
2002
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通讯作者：
Ran Jing-cheng
中科院分区：
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作者：
Ran Jing-cheng
根据贵州省茂兰国家级自然保护区的实地观测数据，采用吸收捕集法研究了亚热带森林土壤CO 2 释放趋势。考察了以下几个方面：春、冬季CO 2 释放量较低，夏、秋季释放量较高。春季CO 2 释放量为27.1 149mg.m -2.h -1 至94.9 022 mg.m -2.h -1 ，平均为0865.5 277mg.m -2.h -1 。夏季为127.6 942 mg.m -2.h -1 至446.5 894mg.m -2.h -1 ，平均为08 281.7 385 mg.m -2.h -1 。秋季为0～657.0 716 mg.m -2.h -1，平均为08 339.6 792mg.m -2.h -1。冬季为71.5 163 mg.m -2.h -1 至595.8 761mg.m -2.h -1 ，平均为08 206.5 868 mg.m -2.h -1 。年平均为1.9 568 kg.m -2.yr -1。最高点是下午14点到18点。最低点是晚上18点到22点。在春天。最高点是晚上19点到23点。秋季最低点是凌晨3点到7点。春夏日间释放多于夜间释放，秋冬季反之。
An absorb trap way was used to study the trends of CO 2 release in subtropical forest soil, based on the data of located observaiton in Maolan National Nature Reserve, Guizhou Province, China. The following aspects were investigated: the release of CO 2 was low in spring and winter, but high in summer and autumn. The release of CO 2 in spring was from 27.1 149mg.m -2.h -1 to 94.9 022 mg.m -2.h -1, with an average 0865.5 277mg.m -2.h -1. In summer it was from 127.6 942 mg.m -2.h -1 to 446.5 894mg.m -2.h -1, with an average 08 281.7 385 mg.m -2.h -1. In autumn it was from 0 to 657.0 716 mg.m -2.h -1, average 08 339.6 792mg.m -2.h -1. In winter it was from 71.5 163 mg.m -2.h -1 to 595.8 761mg.m -2.h -1, with an average 08 206.5 868 mg.m -2.h -1. The annual average was 1.9 568 kg.m -2.yr -1. The highest point was from 14 to 18 pm. and the lowest point was from 18 to 22 pm. in spring. And the highest point was from 19 to 23 pm. and lowest point was from 3 to 7 am.in autum. The day release was more than night in spring and summer, and vice versa in autumn and winter.