辽宁西部地区地面温度变化特征分析

为了辽宁西部山区小流域综合治理和农业生产工程服务，掌握近地面层气候变化规律，利用1953—2012年辽宁西部7个观测站逐月地面温度资料，采用气候统计诊断分析方法，对近60年辽宁西部年、季、月地面平均温度、平均最高温度和平均最低温度的气候变化特征和气候突变进行研究。结果表明：地面平均温度、平均最高温度和平均最低温度存在不同的升温趋势和变化特征。地面平均温度年均值气候倾向率为0.403℃/10 a，气候突变在1987年，大部分月份升温明显，各个季节不存在气候突变；地面平均最高温度年均值气候倾向率为0.331℃/10 a，不存在气候突变，仅有1—4月呈现升温，其他各月变化平稳；地面平均最低温度年均值气候倾向率为0.590℃/10 a，气候突变在1993年，各月、季升温显著。地面温度的上升趋势主要取决于地面最低温度的升高。研究结果对气候资源利用和开发，农作物种群的调整和布局，农业气象风险性决策具有参考价值。

Characteristics of the Surface Temperature Change in West Liaoning

In order to do comprehensive control for small watershed and services ot agricultural prooucuon engineering, and master the law of climate change in the surface layer in mountain area of west Liaoning, using monthly surface temperature data from 1953 to 2012 at 7 stations in west Liaoning, the characteristics of climate change and climate mutations of monthly, seasonal and annual mean surface temperature, average maximum surface temperature and average minimum surface temperature in west Liaoning in recent 50 years were researched by analysis method of climate statistical diagnostic. The results showed that： the average surface temperature, average maximum temperature and average minimum temperature had different warming trend and variation characteristics. Climate trend rate of the average annual mean surface temperature was climate of the average annual minimum surface temperature was warming significantly in each month and each season of 1993. Surface temperature rose depends primarily on the surface minimum temperature. The results had reference value to use and development of climate resource, adjustment and layout of crop populations, risk decisions of agricultural meteorology.