1961—2010年辽西小凌河上游光能资源变化趋势分析

Analysis on Energy Resource Trends in Western Liaoning Xiaolinghe Upstream from 1961 to 2010

以辽宁西部小凌河上游凌源、喀左、羊山气象观测站1961—2010年日照时数、日照百分率等资料为基础,采用现代气候统计诊断技术,分析了该地区光照资源年际和作物生长季变化趋势、突变特征。结果表明:1961—2010年,辽西小凌河上游年太阳总辐射、年日照时数总量和生长季太阳总辐射、日照时数呈波动性减少,递减速率分别为1.964 MJ/(m2·10 a)、56.224 h/10 a和1.357 MJ/(m2·10 a)、38.705 h/10 a;年太阳总辐射、年日照时数总量气候突变分别发生在1979年和1985年,突变前后分别减少5.5 MJ/m2和162 h;生长季太阳总辐射和日照时数持续减少,没有明显的突变时间。掌握辽西小凌河上游光能资源气候变化规律,对有效应对气候变化合理开发光能资源具有积极意义。

Starting from the data of sunshine duration and percentage of sunshine observed at Lingyuan Meteorological Station, Kazuo Meteorological Station and Yangshan Meteorological Station at upstream of Xiaoling River in west Liaoning from 1961 to 2010 and with modern climatological statistical and diagnostic techniques, we analyze both annual and crop-growth-seasonal variation trend and mutation characteristics of light resources in this area- The results show that in the past 50 years, annual total solar energy, annual total hours of sunshine, crop-growth-seasonal total solar energy and crop-growth-seasonal total hours of sunshine all experienced a fluctuant decrease, with the decreasing speed of 1.964 MJ/ （m2· l0 a）, 56.224 h/10 a, 1.357 MJ/ （m2· 10 a） and 38.705 h/10 a; the mutation of annual total solar energy and annual total hours of sunshine appeared at the year of 1979 and 1985, with the decrease of 5.5 MJ/m2 and 162 h after the mutation; the crop-growth-seasonal total solar energy and crop-growth-seasonal hours of sunshine experienced a continuous decrease and there exists no mutation in the their data. We think to learn through the rules of light energy changes with the climate change in the upstream of Xiaoling River in west Liaoning creates a positive inspire for our proper exploitation of light resources with efficient handling of climate change.