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| 喀斯特地区土壤剖面CO_2、CH_4 和N_2O浓度的相关关系 | |
| 引用本文： | 刘芳,刘丛强,王仕禄,朱正杰.喀斯特地区土壤剖面CO_2、CH_4 和N_2O浓度的相关关系[J].生态学杂志,2010,29(4):717. |
| 作者姓名： | 刘芳 刘丛强 王仕禄 朱正杰 |
| 作者单位： | 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,贵阳,550002;百色学院化学与生命科学系,广西百色,533000 2. 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,贵阳,550002 3. 重庆地质矿产研究院,重庆,400042 |
| 基金项目： | 国家重点基础研究发展规划项目(2006CB403200); 中国科学院西部行动计划资助项目(KZCX2-XB2-08) |
| 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。 |
| 关 键 词： | 喀斯特 温室气体 相关关系 黔中地区 |
Correlations among CO_2,CH_4,and N_2O concentrations in soil profiles in central Guizhou Karst area |
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| LIU Fang,LIU Cong-qiang,WANG Shi-lu,ZHU Zheng-jie.Correlations among CO_2,CH_4,and N_2O concentrations in soil profiles in central Guizhou Karst area[J].Chinese Journal of Ecology,2010,29(4):717. | |
| Authors: | LIU Fang LIU Cong-qiang WANG Shi-lu ZHU Zheng-jie |
| Affiliation: | LIU Fang1,2,LIU Cong-qiang1,WANG Shi-lu1,ZHU Zheng-jie3 (1State Key Laboratory of the Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2Department of Chemistry , Life Science,Baise University,Baise 533000,Guangxi,3 Chongqing Institute of Geology , Mineral Resources,Chongqing 400042,China) |
| Abstract: | From June 2006 to May 2007,the monthly CO_2,CH_4,and N_2O concentrations in soil profiles in central Guizhou Karst area were measured,with their spatiotemporal correlations analyzed.The CO_2 and N_2O concentrations in the soil profiles were 0.35-35.3 ml·L~(-1) and 0.31-5.31 μl·L~(-1),respectively,being higher in summer and autumn than in winter and spring,and the CH_4 concentration was 0.1-4.7 μl·L~(-1),with no significant difference among seasons.With the increase of soil depth,the CO_2 and N_2O concentrations increased first and then decreased or tended to be stable,while CH_4 had an inverse trend unlike CO_2 and N_2O.The spatiotemporal distribution of CO_2 in the soil profiles was significantly positively correlated with that of N_2O,but negatively correlated with that of CH_4;while the spatiotemporal variations of CH_4 and N_2O were negatively correlated,being significant in Huaxi grassland,Qingzhen hardwood forest,and forest park Pinus massoniana forest and hardwood forest. |
| Keywords: | Karst greenhouse gas correlation central Guizhou |
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