喀斯特地区土壤剖面CO2、CH4和N2O浓度的相关关系

被引:14
作者
刘芳 [1 ,2 ]
刘丛强 [1 ]
王仕禄 [1 ]
朱正杰 [3 ]
机构
[1] 中国科学院地球化学研究所环境地球化学国家重点实验室
[2] 百色学院化学与生命科学系
[3] 重庆地质矿产研究院
关键词
喀斯特; 温室气体; 相关关系; 黔中地区;
D O I
10.13292/j.1000-4890.2010.0108
中图分类号
X16 [环境气象学];
学科分类号
0706 ; 070602 ;
摘要
2006年6月—2007年5月对喀斯特地区土壤剖面中CO2、CH4和N2O进行采样测定,分析了三者间时空分布的相关关系。结果表明,土壤剖面中CO2和N2O含量分别为0.35~35.3ml.L-1和0.31~5.31μl.L-1,夏秋季节高于冬春季节;CH4浓度为0.1~4.7μl.L-1,季节差异不大。随着土壤深度的增加,CO2和N2O的浓度先增加而后明显减小或趋于稳定,CH4浓度则与CO2和N2O相反。相关分析表明,土壤剖面CO2与N2O浓度的时空分布呈显著正相关,与CH4则呈显著负相关。N2O和CH4的时空变化规律为互逆关系,但只在花溪荒草地、清镇阔叶林以及森林公园的马尾松林和阔叶林观测点达到显著水平。
引用
收藏
页码:717 / 723
页数:7
相关论文
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