摘要
根据1961-2004年湖南省96个气象站的历史资料,分析了近44年温、光、水的年际变化特征,利用作物生产潜力模式,计算了湖南农作物光合潜力、光温潜力与气候生产潜力,探讨了农作物生产潜力的时空变化规律.结果表明,湖南省年平均气温每10年上升0.1℃,年日照时数自20世纪80年代初下降了173.2 h,年降水量存在2个明显的多水期和少雨期.光能潜力和光温潜力呈东高西低的分布态势,气候生产潜力,湘西和衡邵盆地为低值区,湘北和湘南为高值区.光能潜力、光温潜力44年分别下降了7 629.6,4 739.7 kg/hm2,气候生产潜力变化趋势不明显.
According to the meteorological data from 1961 to 2004 in Hunan Province, the characteristic of temperature, light and water was analyzed. The photosynthetic, photosynthesis-temperature potential productivity and the potential productivity of agro-climatic were calculated by Crops Productive Potential Model, followed by a probe into the disciplinarian of the spatial-temporal variability of crops productive potential. The average annual temperature in Hunan has risen by 0.42 ~C over the past 44 years, And it began to go down by 173.2 h in the early 1980＇s. There are two periods of abundant rainfall and two periods lack of rainfall. The photosynthetic and photosynthesis-temperature potential productivity reflect a high distribution rate in the east and a low on the west. The potential productivity of agro-climatic is lower in west area of Hunan Province and Hengshao Basin; the higher is in north and south area of Hunan Province. The photosynthetic and photosynthesis-temperature potential productivity have reduced 7 629.6 kg/hm^2, 4 739.7 kg/hm^2 during the past 44 years, respectively. The potential productivity of agro-climatic trend is not distinctive.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期9-13,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
中国气象局项目
作者简介
陆魁东（1962-），男，湖南衡南人，湖南省气象科学研究所高级工程师．
