| 岩溶区板栗树下旱季和雨季土壤CO2浓度的研究 |
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| 引用本文： | 李光超,曹建华.岩溶区板栗树下旱季和雨季土壤CO2浓度的研究[J].中国农学通报,2012,28(1):39-43. |
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| 作者姓名： | 李光超 曹建华 |
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| 作者单位： | 1. 中国地质科学院岩溶地质研究所/国土资源部岩溶动力学重点实验室,广西桂林541004;广西师范大学生命科学学院,广西桂林541004
2. 中国地质科学院岩溶地质研究所/国土资源部岩溶动力学重点实验室,广西桂林,541004 |
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| 基金项目： | 国家自然科学基金项目“岩溶动力系统中土壤钙迁移及生态环境效应”（40872213）.致谢：野外试验得到了广西师范大学的戴旭青、王鸿等同学的帮助,在这里表示深深地感谢! |
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| 摘 要： | 为了研究岩溶区种植板栗树以后土壤CO2浓度的变化，以广西隆安县岩溶区板栗树下和相同地质条件下非板栗树下（草地）为研究对象，分别测定了旱季与雨季时10 cm、20 cm、40 cm、60 cm、80 cm的土壤pH和CO2浓度等，并且做了比较分析。结果表明：在相同的条件下板栗树下的土壤pH比非板栗树下的低且显弱酸性；雨季土壤pH比旱季土壤低；板栗树下的土壤CO2浓度比非板栗树高，而雨季比旱季CO2浓度高。土壤pH与土壤CO2浓度相关性分析表明，土壤CO2的浓度与土壤的pH成显著负相关关系，土壤CO2浓度与降雨量、温度等有很大的关系。
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| 关 键 词： | 西藏 西藏 芥菜型油菜 农艺性状 典范相关分析 |
| 收稿时间： | 2011/8/29 0:00:00 |
| 修稿时间： | 2011/10/13 0:00:00 |
Soil CO2 Concentration under Castanea mollissima Region in Karst Areas at Dry and Rainy Seasons |
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| Li Guangchao
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Cao Jianhua.Soil CO2 Concentration under Castanea mollissima Region in Karst Areas at Dry and Rainy Seasons[J].Chinese Agricultural Science Bulletin,2012,28(1):39-43. |
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| Authors: | Li Guangchao Cao Jianhua |
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| Institution: | (Institute of Karst Geology, Chinese Academy of Geological Science/ Key Laboratory of Karst Dynamics, Ministry of land and Resources, Guilin Guangxi 541004; 2College of Life Science, Guangxi Normal University, Guilin Guangxi 541004) |
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| Abstract: | The purpose of the study was to research the changes of soil CO2 concentration after planting Castanea mollissima in the karst areas, taking two kinds of lands as the research object, which were under Castanea mo11issima and grassland in karst areas of Long＇ an County, Guangxi, the author tested the pH values and CO2 concentration of the soils in corresponding depths which included 10 cm, 20 cm, 40 cm, 60 cm and 80 cm at the dry and rainy seasons; then conducted a comparison study on the soil＇ s CO2 concentration between them, with aiming to study the change of the soil＇ s CO2 concentration after planting Castanea mollissima in typical karst area. The results showed that under the same condition, the soil＇ s pH value of Castanea mollissima was lower than others. Related to rainy season and dry season, the soil pH value of rainy season was lower than dry season. Related to the soil CO2 concentration, under the same condition, the soil CO2 concentration of Castanea mollissima was higher than others, and soil CO2 concentration of rainy season was higher than dry season. Based on the analysis of soil pH values and soil CO2 concentration, the soil CO2 concentration had significant negative correlation with soil pH. The soil CO2 concentration had significant correlation with rainfall, temperature etc. |
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| Keywords: | karsts region Castanea mollissima dry season rainy season soil CO2 concentration |
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