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生态学杂志 ›› 2004, Vol. ›› Issue (6): 6-10.

• 研究报告 • 上一篇    下一篇

西安黄土区土壤碳释放的初步研究

张晓龙1,2, 马润花3, 赵景波4,5, 李培英1   

  1. 1. 国家海洋局第一海洋研究所, 青岛, 266061;
    2. 中国海洋大学, 青岛, 266003;
    3. 山东烟台师范学院, 烟台, 264025;
    4. 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;
    5. 陕西师范大学, 西安, 710062
  • 收稿日期:2004-01-14 修回日期:2004-03-22 出版日期:2004-12-10
  • 通讯作者: 张晓龙,男,1969年生,陕西商州人,中国海洋大学在读博士.主要从事生态工程与环境保护研究.
  • 基金资助:
    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(SKLLQG0007);国际地质对比计划资助项目(IGCP448)

Carbon emission from soil in Xi'an Loess regron

ZHANG Xiaolong1,2, MA Runhua3, ZHAO Jingbo4,5, LI Peiying1   

  1. 1. First Institute of Oceanography, State Bureau of Oceanic Administration, Qingdao 266061, China;
    2. Ocean University of China, Qingdao 266003, China;
    3. Yantai Normal College, Yantai 264025, China;
    4. State Key Laboratory of Loess and Quaternary Geology, Chinese Acadeny of Scieces, Xi'an 710075, China;
    5. Shaanxi Normal University, Xi'an 710062, China
  • Received:2004-01-14 Revised:2004-03-22 Online:2004-12-10

摘要: 1999年9月~2001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: 亚种间杂交稻, 受精, 温度, 模型

Abstract: With alkali aqua absorption method,CO2 emission from the loess soil in Xi'an area was studied from Sep.1999 to Sep.2001.The results showed that the amount of CO2 emission during the daytime was lower than that during the night,which tended to keep pace with the temperature change.The amount of CO2 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 CO2 emission and temperature.The amount of CO2 emission varied under different vegetation conditions,which was generally much higher on the bare ground than that of the others.Moreover,the emission of CO2 in the soil was sensitive to the texture and structure of soil and CO2 was emitted from loose layers more than solid ones.

Key words: Intersubspecific hybrid rice, Fertilization, Temperature, Model

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