| 亚热带马尼拉草坪生态系统CO_2净交换量测定方法比较 |
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| 引用本文： | 李熙波,杨玉盛,曾宏达,谢锦升,张静,朱宁.亚热带马尼拉草坪生态系统CO_2净交换量测定方法比较[J].福建地理,2008(4). |
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| 作者姓名： | 李熙波 杨玉盛 曾宏达 谢锦升 张静 朱宁 |
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| 作者单位： | 福建省亚热带资源与环境重点实验室;福建师范大学地理科学院; |
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| 基金项目： | 福建省自然科学基金资助项目(2007J0346);;福建省教育厅科学基金资助项目(JB07069);;福建师范大学地理科学院研究生科研创新基金 |
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| 摘 要： | 利用IRGA法和GC法,同步观测了3种天气(晴天、多云、阴天)条件下福州市江滨公园马尼拉草坪生态系统CO2净交换量(NEE)的白昼动态变化,比较IRGA法和GC法透明通量箱对观测样点环境的影响程度,并探讨其对NEE观测结果的影响.结果表明:在单次观测结束时,IRGA法通量箱对样点环境的扰动小于GC法,晴天白天二者箱内的平均升温分别为1.79℃和2.33℃,箱内平均光合有效辐射(PAR)降低幅度分别为11.00%和21.00%.3种天气情况下,IRGA法与GC法观测的NEE白天变化趋势较一致,但3种天气相同时段内GC法测定的NEE平均值比IRGA法高3.17μmol·m-2·s-1,二者的差异在中午最大,在清晨和傍晚较小.IRGA法比GC法可以更为准确地测量草坪NEE.
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| 关 键 词： | CO2净生态系统交换量 IRGA法 GC法 草坪 |
Comparison of CO_2 Net Exchange Rate by Different Methods in Subtropical Manilagrass Lawn Ecosystem |
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| LI Xi-bo,YANG Yu-sheng,ZENG Hong-da,XIE Jin-sheng,ZHANG Jing,ZHU Ning.Comparison of CO_2 Net Exchange Rate by Different Methods in Subtropical Manilagrass Lawn Ecosystem[J].Fujian Geography,2008(4). |
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| Authors: | LI Xi-bo YANG Yu-sheng ZENG Hong-da XIE Jin-sheng ZHANG Jing ZHU Ning |
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| Institution: | 1.Fujian Key Laboratory of Subtropical Resources and Environment;350007;Fuzhou;China;2.School of Geographical Sciences;Fujian Normal University;China |
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| Abstract: | Based on the measurement of CO2 net ecosystem exchange by the methods of chamber/infrared gas analyze(IRGA method)and static chamber/gas chromatogram(GC method),a comparison was made between the two methods in the evaluation of CO2 net ecosystem exchange(NEE)over turfgrass(Zoysia matrella)in Riverbank Park of Fuzhou city during daytime under different kinds of weather,and the chambers' influence on natural conditions of two methods was measured.The results showed that the IRGA chamber had less influence on ... |
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| Keywords: | CO2 net ecosystem exchange chamber/infrared gas analyze static chamber/gas chromatogram turfgrass |
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