| 全球农作物对大气CO2及其倍增的吸收量估算 |
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| 引用本文： | 王修兰.全球农作物对大气CO2及其倍增的吸收量估算[J].气象学报,1996,54(4):466-473. |
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| 作者姓名： | 王修兰 |
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| 作者单位： | 中国农业科学院农业气象研究所 |
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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。
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| 关 键 词： | 作物，CO＿2倍增，CO＿2吸收量，估算 |
| 收稿时间： | 1994/10/28 0:00:00 |
| 修稿时间： | 1995/8/18 0:00:00 |
THE ESTIMATION ON CROP ABSORBING CO2 UNDER CURRENT AND DOUBLE CO2 CONDITIONS IN THE WORLD |
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| Wang Xiulan.THE ESTIMATION ON CROP ABSORBING CO2 UNDER CURRENT AND DOUBLE CO2 CONDITIONS IN THE WORLD[J].Acta Meteorologica Sinica,1996,54(4):466-473. |
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| Authors: | Wang Xiulan |
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| Institution: | Institute of Agrometeorology, Chinese Academy of Agricultural Sciences, Beiging, 100081 |
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| 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 CO_2 double Absorbing CO_2 Estimation |
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