气候变暖对建昌地区农业气候资源的影响

根据建昌1960~2009年气象三大要素,采用常规统计方法,分析了年、作物生长季时间尺度热量、光照、降水资源的变化特征。结果表明,热量资源（平均气温、≥0℃、≥10℃活动积温）呈明显的升高和增加趋势;光照资源、降水资源呈不同程度的下降减少趋势。光、热、水等气候条件的改变,使得气候资源从新整合,对建昌农业生产的影响利弊共存。一方面,气候变化使建昌地区热量资源增加,将使作物生育期延长,提高复种指数,增加单位面积产量;另一方面,光照资源和降水资源的趋势减少,造成了农业生产的不稳定性增加。纵观气候变暖的利弊关系,应该是弊大于利,因此,提高对气候变暖的认知和应对能力,非常必要。

The Impact of Climate Warming on Agricultural Climate Resources in Jianchang Area

Based on the three elements of the meteorological Jianchang during 1960-2009,using conventional statistical methods,the crop growing season time scale of heat,light,changes in precipitation characteristics were analyzed.The results showed that: the heat of resources(average temperature,≥ 0 ℃,and ≥ 10 ℃ accumulated temperature) was significantly increased;light resources,precipitation was decreased in varying degrees.Light,heat,water and other climate conditions change,making the new integration of climate resources,the impact on agricultural production Jianchang advantages and disadvantages.On the one hand,climate change,energy resources increased in Jianchang region,would extend the period of crop growth,increase multiple cropping indexes,and increase yield per unit area.On the other hand,light precipitation trends in resources and reduction,resulting in increased instability in agricultural production.By weighing the relationship the pros and cons of global warming,there was more harm than good.Therefore,raising awareness of climate change and response capacity was necessary.