利用区域气候模式(PRECIS),模拟生成A2情景下广西冬季气温和降水气候情景数据,经模型订正后,应用迈阿密模型(Miami Model)和桑斯韦特纪念模型(Thornthwait Montreal Model)估算基于广西冬季平均温度、降水量的作物生产量和平均蒸散量的作物气候生产力,预估未来广西冬季农业气候生产潜力的时空变化特征。结果表明:基于未来广西冬季平均温度估算的作物生产潜力随时间呈增长趋势,具有南高北低的纬向空间分布特征;基于冬季平均降水量估算的作物生产力和蒸散量估算的作物气候生产潜力随时间推移而减少,呈现东多西少的经向空间分布特征。未来广西的冬季热量资源良好,但是受降水限制,基于平均蒸散量估算的广西冬季作物气候生产潜力下降,使得广西冬季农业气候生产潜力下降的趋势明显,表明降水量是广西冬季农业气候生产潜力的决定性驱动因子。
Based on acid rain data from ten monitoring sites in Guangxi from 2003 to 2009,the temporal and spatial distribution characteristic of acid rain in Guangxi were analyzed by means of empirical orthogonal function resolution(EOF).The results showed that there was fluctuating change of acid rain frequency in Guangxi,and acid rain pollution became severer in 2004-2008;acid rain frequency changed conformably in the whole region and it was obviously higher in eastern and northwestern Guangxi,while acid rain pollution became severe in western Guangxi;acid rain frequency varied out of phase between northeastern and southwestern Guangxi in an individual year.
