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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (2): 246-249.

所属专题： 水稻； 农业生态

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

广州市水稻作物生态系统碳汇功能

何介南 康文星   

  • 收稿日期:2009-08-31 修回日期:2009-09-14 出版日期:2010-01-20 发布日期:2010-01-20

Carbon Sink Function of Rice-crop Ecosystem in Guangzhou City

  • Received:2009-08-31 Revised:2009-09-14 Online:2010-01-20 Published:2010-01-20

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851

摘要：

根据广州市水稻作物系统的相关资料和实地的观测数据，通过实验分析，研究了广州市水稻作物生态系统的碳汇功能。结果表明：2005年广州市水稻作物生态系统净生产力吸收CO2 1621649t?a-1，其土壤CO2排放1168625t?a-1，吸收大于排放，系统净吸收CO2 总量为453024t?a-1，广州市水稻作物生态系统具有碳汇功能，单位面积CO2吸收量为5.58t?hm-2 a-1，是一个弱的碳汇。

关键词: 玉米品种, 玉米品种, 吉单618, 栽培

Abstract:

This article studied the carbon sink function of Rice-crop ecosystem in Guangzhou City based on experiments, according to spot observation data and related data with Rice-crop system in Guangzhou City. Results showed that: the CO2 absorb ability in Rice-crop System in Guangzhou City during 2005 net productivity process was 1621649t?a-1;the amount of CO2 emission in the soil was 1168625t?a-1,less than the CO2 absorb ability; the amount of CO2 net absorption was 453024t?a-1, the Rice-crop ecosystem in Guangzhou City had carbon sink function, was5.58t?hm-2 a-1 , and it was a weaker carbon sink process in the atmosphere.