|
|||||
|
|
| 西安黄土区土壤碳释放的初步研究 | |
| 引用本文： | 张晓龙,马润花,赵景波,李培英.西安黄土区土壤碳释放的初步研究[J].生态学杂志,2004,23(6):6-10. |
| 作者姓名： | 张晓龙 马润花 赵景波 李培英 |
| 作者单位： | 1. 国家海洋局第一海洋研究所,青岛,266061;中国海洋大学,青岛,266003 2. 山东烟台师范学院,烟台,264025 3. 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安,710075;陕西师范大学,西安,710062 4. 国家海洋局第一海洋研究所,青岛,266061 |
| 基金项目： | 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室项目 (SKLLQG0 0 0 7)，国际地质对比计划资助项目 (IGCP44 8) |
| 摘 要： | 1999年 9月～ 2 0 0 1年 9月的观测资料显示 ,西安黄土区土壤CO2 释放表现为白昼释放量低于夜间。土壤CO2 释放量日变化从当日清晨至次日晨 ,呈现由高变低再变高的规律。土壤CO2 释放量的变化趋势大体与温度的变化在时间上有一定的滞后性。西安黄土区土壤CO2 释放量有明显的季节变化 ,夏季日释放量最多 ,秋季次之 ,冬季最少。不同覆被条件下 ,土壤CO2 释放量有差异 ,一般说来 ,裸地有较高的释放量。实验表明 ,CO2 释放量对土质变化敏感 ,致密的土壤 ,释放量小。 |
| 关 键 词： | 黄土 土壤CO2释放量 变化规律 影响因素 西安 |
| 文章编号： | 1000-4890(2004)06-0006-05 |
Carbon emission from soil in Xi'an Loess regron |
|
| ZHANG Xiaolong ,MA Runhua,ZHAO Jingbo ,LI Peiying.Carbon emission from soil in Xi'an Loess regron[J].Chinese Journal of Ecology,2004,23(6):6-10. | |
| Authors: | ZHANG Xiaolong MA Runhua ZHAO Jingbo LI Peiying |
| Institution: | ZHANG Xiaolong 1,2,MA Runhua3,ZHAO Jingbo 4,5,LI Peiying1 |
| Abstract: | With alkali aqua absorption method,CO 2 emission from the loess soil in Xi'an area was studied from Sep.1999 to Sep.2001.The results showed that the amount of CO 2 emission during the daytime was lower than that during the night,which tended to keep pace with the temperature change.The amount of CO 2 emission also changed with the seasons,which was the highest in summer,next in autumn,and lowest in winter.There was significantly positive correlation between the amount of CO 2 emission and temperature.The amount of CO 2 emission varied under different vegetation conditions,which was generally much higher on the bare ground than that of the others.Moreover,the emission of CO 2 in the soil was sensitive to the texture and structure of soil and CO 2 was emitted from loose layers more than solid ones. |
| Keywords: | loess CO 2 emission from soil change law affecting factors Xi'an |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |