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地震 ›› 2014, Vol. 34 ›› Issue (4): 30-39.

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四川布拖土壤CO2多年释放特征及影响因素

马玉川1, 孙小龙2, 王博1, 周志华1   

  1. 1.中国地震台网中心,北京100045;
    2.中国地震局地壳应力研究所,北京100085
  • 收稿日期:2014-03-11 修回日期:2014-05-20 发布日期:2020-09-11
  • 作者简介:马玉川(1985-),男,宁夏海原人,2010年获硕士学位,现主要从事地震地下流体动力学等研究。

Secular Variation Features of CO2 in Butuo, Sichuan Province

MA Yu-chuan1, SUN Xiao-long2, WANG Bo1, ZHOU Zhi-hua1   

  1. 1. China Earthquake Networks Center, Beijing 100045,China;
    2. Institute of Crustal Dynamics, CEA, Beijing 100085 ,China
  • Received:2014-03-11 Revised:2014-05-20 Published:2020-09-11

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摘要： 依据四川省布拖土壤CO2测点2005- 2013 年的连续数据,分析了CO2的释放特征、来源和影响因素。结果表明,布拖CO2释放率有明显的夏高冬低年变特征,来源于土壤生物呼吸。布拖CO2释放率的主要影响因素为地温和土壤湿度,在每年11月至次年3月,CO2释率和地温正相关;在每年4~10月,CO2释放率和土壤湿度正相关。结果还表明,布拖CO2释放率在2007、2012和2013年夏季的峰值偏高,其成因为生物生长增长期内降水量偏大引起土.壤湿度增大、从而引起土壤呼吸增强、进而引起CO2释放率偏高,与地震孕育或区域构造活动无关。

关键词: 土壤CO2, 土壤呼吸, 温度, 湿度, 降水

Abstract: We analyze the source and effect factors of CO2 in Butuo, Sichuan Province, basing on observed data from January 2005 to August 2013. The results show that CO2 comes mainly from soil respiration, and the variation features are mainly affected by soil temperature and moisture. In detail, the variation features of the CO2 have the same rhythm with the biological growth equation, so we conclude that it comes mainly from soil respiration. The variation features of the CO2 are mainly affected by soil temperature in November each year to the next March, and during this time the values of CO2 are proportional to the soil temperature. The variation features of the CO2 are mainly affected by soil moisture in April each year to October, and during this time the values of CO2 are proportional to the soil moisture. The values of the CO2 in the middle year of 2007, 2012 and 2013 are higher than other years, it is for the reason that the cumulative rainfall in these years are much bigger, leading to bigger soil moisture and respiration. Therefore, it has no rela tionship with earthquake preparation or tectonic activity.

Key words: CO2 Variation, Soil respiration, Tectonic activity

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