山西岚县气候变化特征分析及其对生态环境的影响

Analysis of Characteristic of Climate Change and Impact to the Ecological Environment in Lan County Shanxi Province

根据1981年～2006年岚县气温和降水资料，运用SPSS10．0对近26年岚县气候变化特征进行了分析．以揭示该地的气候变化对生态环境的影响．分析表明：近26年岚县年平均气温呈上升趋势，增温率为0．52℃／10年，其中以冬季气温增幅最大．根据近26年冷暖波动情况，可将岚县划分成1个冷期和1个暖期．年降水量变化特征不明显，1986年以后呈下降趋势，降水变化可分为2个多雨期和2个少雨期．岚县气候变化有向暖干化发展的趋势．该气候变化特征不利于生态环境的良性发展．

According to temperature and precipitation data from 1981 we 2006 in Lan County, using SPSS10. 0 we analyzed the climatic change characteristics and indicated the impact to the ecological environment. The results showed that temperature increased with 0.52 ℃/10 years for last 26years,the seasonal increasing rate was the biggest in winter. Thus,the climatic change could be divided into one cold period and one warm period in Lan county according to temperature fluctuation for last 26years. Precipitation change was not obvious, but it decreased since 1986. It could be divided into 2 rainy periods and 2 less rain periods. The trend of climate change in Lan County was becoming warmer and drier. It is harmful to the positive development of eeological environment.