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| 桂林盘龙洞岩溶表层带土壤CO2浓度的季节变化研究 | |
| 引用本文： | 李涛,曹建华,张美良,黄艳梅,陈家瑞,严毅萍,李光超,朱晓燕.桂林盘龙洞岩溶表层带土壤CO2浓度的季节变化研究[J].中国岩溶,2011,30(3):348-353. |
| 作者姓名： | 李涛 曹建华 张美良 黄艳梅 陈家瑞 严毅萍 李光超 朱晓燕 |
| 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开放实验室,广西桂林541004;广西师范大学生命科学学院,广西桂林541004;云南省红河热带农业科学研究所,云南河口661300 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开放实验室,广西桂林541004;广西师范大学生命科学学院,广西桂林541004 3. 中国地质科学院岩溶地质研究所国土资源部岩溶动力学开放实验室,广西桂林,541004 |
| 基金项目： | 国土资源部地调项目"岩溶动力系统与碳循环"(编号:1212010911062)和"高分辨率洞穴石笋记录气候突变及其规律性研究"(编号:水[2010]矿评03-06-02) |
| 摘 要： | 以桂林盘龙洞岩溶实验场为例,选择岩溶洼地里的坡地和洼地2个样地,通过长期定时监测土壤CO2浓度变化,表明：（1）土壤CO2浓度具有明显的季节性变化特征,夏季（6—8月）土壤CO2浓度是其它时期的2～3倍,并显示与气温、降水和生物活动密切相关;（2）洼地地段土壤CO2浓度比坡地地段要高,尤其夏季时洼地比坡地高近1000mg／m2;（3）在垂直剖面上,大多数的情况下土壤CO22浓度随土壤深度的递增而升高,但在雨季时坡地（-50cm与-80cm处）和洼地（-80cm与-100am处）的土壤CO2浓度随深度的增加而降低。 |
| 关 键 词： | 桂林盘龙洞 岩溶表层带 土壤CO2 气温 |
| 收稿时间： | 2011/3/21 0:00:00 |
The seasonal variation of soil CO2 concentration in epikarst in the Panlong Cave, Guilin |
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| LI Tao,CAO Jian-hu,ZHANG Mei-liang,HUANG Yan-mei,CHEN Jia-rui,YAN Yi-ping,LI Guang-chao and ZHU Xiao-yan.The seasonal variation of soil CO2 concentration in epikarst in the Panlong Cave, Guilin[J].Carsologica Sinica,2011,30(3):348-353. | |
| Authors: | LI Tao CAO Jian-hu ZHANG Mei-liang HUANG Yan-mei CHEN Jia-rui YAN Yi-ping LI Guang-chao and ZHU Xiao-yan |
| Institution: | LI Tao1,2,3,CAO Jian-hua1,ZHANG Mei-liang1,HUANG Yan-mei1,CHEN Jia-rui1,YAN Yi-ping1,LI Guang-chao1,ZHU Xiao-yan1(1.Karst Dynamics Laboratory,Institute of Karst Geology,CAGS,Guilin,Guangxi 541004,China,2.The College of Life Science,Guangxi Normal University,3.Honghe Tropical Agriculture Research Institute of Yunnan,Hekou Yunnan 661300,China) |
| Abstract: | Taking the Panlong Cave karst experimental site in Guilin as a case, long-term survey on soil CO2 concentration variations at regular intervals is done in two sample plots depression bottom and slope. The result shows that:(1) The soil CO2 concentration varies seasonally obviously. In the summer (May to August), the soil CO2 concentration is two or three times higher than that in the other periods. And it is closely related with temperature, precipitation and biological activities; (2)The soil CO2 concentration at the depression bottom is higher than that on the slope, especially in the summer, the soil CO2 concentration at the depression bottom nearly 1000 mg/m2 higher than on the slope; (3)In the vertical profile, the soil CO2 concentration increases with depth in most cases, but the CO2 concentration both on the slope(-50 cm and -80 cm)or at the depression bottom(-80 cm and -100 cm)reduce with soil depth during the rainy season, which make the soil CO2 concentration to increase with the depth at the top and decrease at the bottom of the vertical profile. |
| Keywords: | Panlong Cave in Guilin epikarst soil CO2 temperature |
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