兴隆山保护区日照时数观测研究

兴隆山保护区在1987年至2007年21年间,采取定点定人定时观测,得出：年平均日照时数是1747.9 h,低于全国该线的日照时数852.1 h;月日照时数是平均145.7 h,范围在181.9 h至116.5 h之间,最多出现在7月,最低出现在10月;日照时数变化很大,平均4.8 h,最长7月,达9h,最短10月,只有1.7 h,形成很大差异.其因是兴隆山林区周边有高山、森林、云、降水、雾霾和水蒸气较多遮挡所致.

Study on Sunshine Hours of Xinglongshan National Nature Reserve

By taking designated person regularly observation method, the sunshine hours in Xinglongshan Nature Reserve was observed for 21 years from 1987 to 2007. The results indicated： The annual average sunshine hours were 1747.9 h, below line of country＇s sunshine hours were 852.1 h; The monthly average sunshine hour were 145.7 h, in the range between 181.9 h and 116.5 h, most appeared in July, the lowest in October; The diurnal sunshine hours changed greatly, average sunshine hours were 4.8 h, the longest diurnal sunshine hours appeared in July and could reach 9 h, the shortest in October and only 1.7 h. The sunshine difference was large, and its difference was caused by more shade of high mountains, forests, cloud, precipitation, fog and water vapor from Xinglongshan mountain forest region.