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
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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.Abstract: 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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Keywords:
- Crop /
- CO2 double /
- Absorbing CO2 /
- Estimation
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Bolin warrick and Doos Jager.The Greenhouse effect climatic change and ecosystems.printed in Great Britain; 1986,293-409.
世界资源研究所主编.世界资源1990-1991.北京:北京大学出版社,1992.16-19. IPCC,1992 IPCC supplement scientific assesment of climate change. printed in Great Britain:1992,12-19.
W.拉夏埃尔著,李博等译.植物生理生态学.北京:科学出版社,1982.12-83. Food and Agriculture organization of the United Nations.FAO yearbook production.1992,46:71-129.
中国农业年鉴编委会.中国农业年鉴1993.北京:农业出版社,1993.252-267. J.杜林博斯,A·H·卡萨姆.产量与水的关系.罗马,联合国粮农组织,1979.5-16. 中国农业科学院甜菜所主编.中国甜菜栽培学.北京:农业出版社,1982.55-59. F·W·T·彭德弗里斯等著,朱德峰等译.几种-年生作物生长的生态生理过程模拟.北京:中国农业科技出版社,1991.35. 韩湘玲主编.作物生态学.北京:气象出版社,1991.151-159. 王修兰等.植物群体光合速率测定装置与方法.农业工程学报,1993,4:62-66. 王修兰等.CO2浓度倍增对大豆各生育阶段光合作用及干物质积累的影响.作物学报,1994,5:520-527. 崔读昌等.中国主要农作物气候资源图集.北京:气象出版社,1984.7-126. Jennifer D.Cure and Basil Acook.Crop responses to carben dioxide doubling:A Literature survey,Agricultural and Forest Met,1986,38:127-145.
Ryuji Nomura.The relationship between global environment,energy resources and economic development,世界环境,1992,3,12-15.
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