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Position: Home > Articles > Effect of atmospheric CO_2 and temperature increment on crop physiology and ecology. Chinese Journal of Applied Ecology 2002,13 (9) 1169-1173

大气CO_2浓度和温度升高对作物生理生态的影响

作  者:
李伏生;康绍忠;张富仓
单  位:
广西大学农学院;教育部农业部旱区农业水土工程研究所
关键词:
大气CO2浓度;温度;水分利用效率;养分
摘  要:
论述了大气CO2 浓度和温度升高下的植物生长、光合作用、产量以及水分养分利用效率等方面的研究进展 .未来高CO2 浓度下 ,光合作用速率有不同程度的提高 ,生物量和产量增加 ;气孔导度降低 ,水分利用效率 (WUE)提高 ;一般地上部分和根系尤其是细根生物量增加 ,凋落物量随之增加 ,C/N比率提高 ,植物残体的腐解速率降低 .CO2 浓度升高后 ,会给根际微生物带来更多的底物 ,从而提高了微生物活性 ,加速养分的矿化过程 ,改善植物的养分状况 .
译  名:
Effect of atmospheric CO_2 and temperature increment on crop physiology and ecology.
作  者:
LI Fusheng 1,KANG Shaozhong 2,ZHANG Fucang 2 ( 1 Agricultural College,Guangxi University,Nanning 530005; 2 Institute of Agricultural Soil & Water Engineering in the Arid and Semiarid,Ministry of Education & Agricultural,Yangling 712100.
关键词:
Atmospheric CO 2 concentration,Temperature,WUE,Nutrient.
摘  要:
The effect of atmospheric CO 2 and temperature increment on crop growth,photosynthesis,yield,and water and nutrient use efficiency was summarized and discussed in this paper.Under high CO 2 concentration in the future,the photosynthetic rate of crops may be enhanced to some extent,and their biomass and yield may also be increased.Their stomatal conductance may be reduced,while water use efficiency (WUE) may by increased under elevated CO 2 concentration.The aboveground biomass and root production,especially fine root production,will be greatly enhanced,and consequently,litter production increased,C/N ratios increased,plant litter decomposition rates declined under CO 2 enrichment.Plants grown under elevated CO 2 concentration may release more substrate into rhizosphere,which may lead to an increased activity of soil microorganisms,accelerated mineralization of nutrients,and improved nutritional status of the plant.

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