| 西安南郊不同人工植被下土壤CO2浓度研究 |
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| 引用本文： | 李艳花,赵景波.西安南郊不同人工植被下土壤CO2浓度研究[J].中国沙漠,2006,26(6):910-914. |
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| 作者姓名： | 李艳花 赵景波 |
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| 作者单位： | 1. 陕西师范大学,旅游与环境学院,陕西,西安,710062
2. 陕西师范大学,旅游与环境学院,陕西,西安,710062;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,陕西,西安,710075 |
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| 基金项目： | 国际地质对比计划;国家重点实验室基金 |
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| 摘 要： | 利用红外CO2监测仪对西安南郊不同植被、不同深度条件下的土壤CO2浓度进行了多次昼夜观测。观测结果表明:从早8:00到次日早8:00,土壤CO2浓度具有从低到高再到低的昼夜变化规律,这种变化特点与昼夜温度变化基本一致,但两者在时间上并不完全同步；土壤CO2浓度从总体来看是白天和夜间很接近；松树林下的土壤CO2浓度大于草地土壤CO2浓度,草地土壤CO2浓度大于竹林下的土壤CO2浓度。
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| 关 键 词： | 西安南郊 土壤CO2浓度 变化 植被 |
| 文章编号： | 1000-694X（2006）06-0910-05 |
| 收稿时间： | 2005-05-12 |
| 修稿时间： | 2005-07-12 |
Soil CO2 Concentration under Different Artificial Vegetations in South Suburb of Xi'an |
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| LI Yan-hua,ZHAO Jing-bo.Soil CO2 Concentration under Different Artificial Vegetations in South Suburb of Xi''''an[J].Journal of Desert Research,2006,26(6):910-914. |
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| Authors: | LI Yan-hua ZHAO Jing-bo |
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| Institution: | 1.College of Tourism and Environment Science, Shaanxi Normal University, Xian 710062, China; 2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xian 710075, China |
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| Abstract: | We have measured the diurnal changes of soil CO_2 concentration under different vegetation covers by using of the infrared monitoring instrument in the south suburb of Xi'an.Analyzing result showed that the soil CO_2 concentration had a changing law of \!low to high and then to low\" from the morning to the next morning,which was basically accordant to the change of temperature,but the change of the former was later than that of the latter.The soil CO_2 concentration was greater in daytime than in nighttime.Temperature was the main factor of determining the change law of the soil CO_2 concentration.The soil CO_2 concentration under the study vegetation covers was: in pine tree>in grassland>in bamboo shrub. |
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| Keywords: | south suburb of Xi'an soil CO_2 concentration change vegetation covers |
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