关键词: 光热水, 影响, 农业, 辽西

Abstract:  By using conventional methods of mathematical statistics, this paper focused on the heat and precipitation resources change trends and its impact on local agriculture in the context of global warming in recent 50 years in the western Liaoning province on the basis of collected data from 1960-2009. The results showed that in recent 50 years lighting resources declined in western Liaoning province of 406h reduced annually. The annual average temperature and accumulated temperature ≥0℃ showed significantly increased trend of 1.7℃ up annually. The annual accumulated temperature increased 307℃·d. The annual precipitation showed an obvious decreasing trend of 62mm reduced, markedly fluctuating in the intergenerational scales. For light resource rich western Liaoning area, the reduced sunshine hours has not shown adverse effects; however the higher temperatures, decreased precipitation in the west of Liaoning present climate warming and drying trend, which will have a huge impact on the agriculture development in western Liaoning. In this paper, light, temperature, water were studied for improving the understanding of the impact of climate warming on agricultural production, and enhancing the ability to address climate change, therefore providing the basis for the agricultural structure adjustment.

Key words: Light, heat and water, Effect, Agriculture, Western part of Liaoning province