赤红壤早稻田甲烷排放通量及其影响因素

生态学杂志 ›› 2005, Vol. ›› Issue (8): 939-942.

赤红壤早稻田甲烷排放通量及其影响因素

杜尧东¹, 刘锦銮¹, 杨宁², 王天龙², MAK Khalil³, MJ Shearer³

1. 广东省气候与农业气象中心, 广州, 510080;
2. 广东省清远市气象局, 清远, 511500;
3. 波特兰州立大学物理系, 波特兰, 97207

收稿日期:2004-11-21 修回日期:2005-02-22 出版日期:2005-08-10
通讯作者: 杜尧东,男,1964年生,博士,副研究员.主要从事应用气象学和农业生态学研究,发表论文60余篇.E-mail:yddu@grmc.gov.cn
基金资助:
中美合作资助项目.

CH₄ emission flux from early rice field of laterite and its affecting factors

DU Yaodong¹, LIU Jinluan¹, YANG Ning², WANG Tianlong², MAK Khalil³, MJ Shearer³

1. Climatic and Agrometeorological Center of Guangdong Province, Guangzhou 510080, China;
2. Qingyuan Meteorological Bureau of Guangdong Province, Qingyuang 511500, China;
3. Department of Physics, Portland State University, Portland 97207, USA

Received:2004-11-21 Revised:2005-02-22 Online:2005-08-10

摘要/Abstract

摘要： 用封闭箱法对广东省赤红壤早稻田CH₄排放通量进行了观测。结果表明,CH₄排放有明显的季节变化规律,3个排放高峰分别出现在水稻分蘖末期、孕穗抽穗期和乳熟期,平均通量为5.7mg·m^-2·h^-1。在测定期内,CH₄排放与5和10cm土壤温度呈显著正相关,与土壤Eh呈显著负相关,与土壤pH值、水层深浅相关不明显。

关键词: 植物挥发性有机化合物(BVOCs), CO₂和O₃浓度升高

Abstract: The measurement of CH₄ emission flux from an early rice field of laterite in Guangdong Province with closed chamber technique showed that the CH₄ emission had a significant seasonal pattern,with three peaks at late tillering,booting-heading and milky stages,and an average of 5.7 mg穖^-2穐^-1.During the period of measurement,there was a significantly positive correlation between CH₄ flux and soil temperature at 5 cm and 10 cm soil depths,and a significantly negative correlation between CH₄ flux and soil Eh.No significant correlation was found between CH₄ flux and soil pH or water depth.

Key words: Biogenic volatile organic compounds(BVOCs), Elevated atmospheric CO₂, O₃

中图分类号:

X511

杜尧东, 刘锦銮, 杨宁, 王天龙, MAK Khalil, MJ Shearer. 赤红壤早稻田甲烷排放通量及其影响因素[J]. 生态学杂志, 2005, (8): 939-942.

DU Yaodong, LIU Jinluan, YANG Ning, WANG Tianlong, MAK Khalil, MJ Shearer. CH₄ emission flux from early rice field of laterite and its affecting factors[J]. cje, 2005, (8): 939-942.

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