沈阳地区农业气候资源分析

Analysis on Agricultural Climate Resources in Shenyang Area

利用沈阳地区1981—2010年气候资料,应用GIS和线性气候倾向率方法对年日照、≥10℃积温、温度、降水等气候资源进行诊断分析。结果表明,近30年来沈阳地区日照时数呈现逐年减少的趋势,日照时数的年际变化存在明显的季节差异,春季、夏季、秋季均呈现减少的趋势;≥10℃积温、平均温度、平均最高温度、平均最低温度均呈逐渐升高的趋势,沈阳地区呈现出"暖干"状态;降水量呈减少趋势,趋势并不剧烈,但地域差异较大。

Using the climate data from 1981 to 2010 in Shenyang,the climatic resources such as annual sunshine,≥ 10 ℃ accumulated temperature,temperature and precipitation were analyzed by GIS and linear climate tendency method. The results showed that the sunshine hours showed a decreasing trend in recent 30 years in Shenyang,the annual variation of sunshine duration had obvious seasonal differences,and the spring,summer and autumn showed a decreasing trend. ≥ 10 ℃ accumulated temperature,average temperature,average maximum temperature and average minimum temperature were rising trend,and Shenyang area showed a warm- dry state. Precipitation showed a decreasing trend,the trend was not severe,but the regional difference was great.