CO2浓度增加对植物生长和农业生产的影响

评述了近年来国内外有关大气中CO_2含量的增加趋势及其对植物生长和农业生产影响的研究进展。指出,无论是“直接效应”还是“间接影响”都有有利和不利两方面的影响;虽然,目前有“弊大于利”的趋向性认识,但由于科学理论上的许多不确定性,如何进行综合评估是今后要大力深入研究的重要课题。

Impacts of CO2 Concentration Increase in Atmosphere on Plant Growth and Agricultural Production

The advances in researches on increasing trend of CO2 concentration in atmosphere and its impacts on plant growth and agricultural production in recent years is briefly reviewed. It is noticed that either so-called "direct effect"or "indirect impact",all have two implications, both positive and negative. Although, at present, there is a more or less general understanding of"negative larger positive", however, because of a lot of uncertainties in scientific theory and knowledges, how to synthetically estimate the impact of CO2 increase in atmosphere on plant growth and agricultural production is still a very important theme to be studied further in the future.