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Position: Home > Articles > Carbon Sink Function of Rice-crop Ecosystem in Guangzhou City Chinese Agricultural Science Bulletin 2010,26 (2) 246-249

广州市水稻作物生态系统碳汇功能

作  者:
何介南;康文星
单  位:
中南林业科技大学
关键词:
碳汇功能;水稻作物;生态系统;广州市
摘  要:
为研究广州市水稻作物生态系统对大气CO2的交换是碳源还是碳汇,依据广州市水稻作物系统的相关资料和实地观测数据,通过试验分析,并建立水稻作物系统固碳估算模型,估算了2005年广州市水稻作物生态系统的CO2吸收量和排放量。结果表明:2005年广州市水稻作物生态系统净生产力吸收CO2量为1 621 649 t/年,固定CO2能力为19.98 t/(hm2.年),其土壤CO2排放量(含CH4中的排C量)为1 168 625 t/年,单位面积CO2排放量为14.40 t/(hm2.年),吸收大于排放,系统净吸收CO2总量为453024 t/年。表明广州市水稻作物生态系统具有碳汇功能,其值为5.58 t/(hm2.年),是一个弱的碳汇。
译  名:
Carbon Sink Function of Rice-crop Ecosystem in Guangzhou City
作  者:
He Jienan,Kang Wenxing(Central South University of Forestry and Technology,Changsha 410004)
关键词:
carbon sink function,rice-crop,ecosystem,Guangzhou city
摘  要:
This article studied the carbon sink function of Rice-crop ecosystem in Guangzhou City based on experiments and establishing estimation model,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 ecosystem in Guangzhou City during 2005 net productivity process was 1 621 649 t/a,the amount of CO2 absorb per unit area was 19.98 t/(hm2·a);the amount of CO2 emission in the soil was 1 168 625t/a,the amount of CO2 emission per unit area was14.40 t/(hm2·a);less than the CO2 absorb ability;the amount of CO2 net absorption was 453 024 t/a,the Rice-crop ecosystem in Guangzhou City had carbon sink function,was 5.58 t/(hm2·a),and it was a weaker carbon sink process in the atmosphere.

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