王修兰. 1996. 全球农作物对大气CO2及其倍增的吸收量估算[J]. 气象学报, 54(4):466-473, doi:10.11676/qxxb1996.048
全球农作物对大气CO2及其倍增的吸收量估算
THE ESTIMATION ON CROP ABSORBING CO2 UNDER CURRENT AND DOUBLE CO2 CONDITIONS IN THE WORLD
投稿时间:1994-10-28  修订日期:1995-08-18
DOI:10.11676/qxxb1996.048
中文关键词:  作物  CO2倍增  CO2吸收量  估算
英文关键词:Crop  CO2 double  Absorbing CO2  Estimation
基金项目:
作者单位
王修兰 中国农业科学院农业气象研究所, 北京, 100081 
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中文摘要:
      根据农作物产量资料(FAO1992年),计算出中国和全球各种作物对CO2的吸收总量分别为5.5×108t/aC和28.9×108t/aC.同时以不同CO2浓度下小麦、玉米、大豆等全生育期光合速率实验数据直接计算的C吸收量为对照,与相应的中国产量资料计算结果比较,两者相差2.6%.从而进一步依据作物对CO2倍增反应诊断实验结果,推算出大气CO2浓度比目前倍增(700ppm)条件下,中国和全球农作物吸收CO2总量将增长21%-26%,分别为6.6×108t/a-6.9×108t/a和34.1×108t/a-36.2×108t/aC.研究还表明,单位面积作物年吸C量全球(3.2t/(hm2·8))比中国(4.2t/(hm2·a))低25.4%,而且C4作物普遍高于同类C3作物.
英文摘要:
      The CO2 obsorption from crops have been estimated on the basis of crops production data (FAO 1992).It is about 550 million t/aC in China and 2890 million t/aC in the world.And making use of photosynthetic experimental data for wheat,corn and soybean in all growing seasons to calculate absorption of C directly.It shows that there is 2.6% error between estimation and calculation.Thereby according to experimental resups of crop response to doubling CO2,crops absorb CO2 will increase 21%-26% under doulbing CO2 concentration condition(700ppm compared with 350ppm),that is,the total CO2 absorption from crops will be 660-690 million t/aC in China and 3410-3620 million t/a C in global world.Additionally,this study presents crops absorb C per planting area is 4.2t/(hm2·a) in China.It is 25.4% more than mean level of the world (3.2t/hm2·a),and crop species C4,is more than C3 generally.
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