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自工业革命以来,由于人类活动的影响,大气中以CO_2为主的温室气体浓度正在急剧上升。据IPCC(联合国政府间气候变化专门小组)提供的资料表明,工业革命前的1765年CO_2浓度为275×10~(-6),1990年已增至355×10~(-6)。预计到2025年前后将比1765年增加一倍,届时全球平均温度将比目前提高1℃(较工业革命前提高2℃);至下世纪末CO_2浓度将比目前增加1倍,那时全球平均温度将比现在提高3℃(较工业革命前提高4℃)为了探明这种气候变化趋势对我地区农业气候
Since the Industrial Revolution, due to the influence of human activities, the atmospheric concentration of CO 2 in the atmosphere is rapidly rising. According to the information provided by the IPCC (United Nations Intergovernmental Panel on Climate Change), the CO 2 concentration in 1765 before the industrial revolution was 275 × 10 -6, and in 1990 it had risen to 355 × 10 -6. It is estimated that by the year 2025, it will double that of 1765, when the global average temperature will be 1 ℃ higher than the present (2 ℃ higher than before the Industrial Revolution); CO 2 concentration will double by the end of the next century, when the global average temperature Will be 3 ℃ higher than now (4 ℃ above the pre-industrial revolution) in order to prove that this trend of climate change in our region agricultural climate