德州市近50年来湿润指数分析与评价  

ANALYSIS AND ASSESSMENT OF THE HUMID LNDEX IN DEZHOU IN RECENT 50 YEARS

作　　者：吴泽新[1,2] 王竹青 陈成果 王新[1] 

机构地区：[1]山东省气象科学研究所,山东济南250031 [2]山东省德州市气象局,山东德州253078

出　　处：《山东农业大学学报（自然科学版）》2010年第4期628-631,共4页Journal of Shandong Agricultural University：Natural Science Edition

摘　　要：湿润指数是衡量一个地区气候干湿程度的指标,也是反映该地区综合气候特征的一种定量指标,在研究气候、气候变化以及环境评价中应用广泛。本文利用近50 a来德州市的气象资料,采用两种方法计算湿润指数,研究德州市气候干湿程度及其变化。研究表明:50 a来德州湿润指数有较明显的下降趋势,气候进一步干旱化,这种变化与降水减少、气温升高有关;季节湿润指数差异很大,夏季较湿润,春季干燥;彭曼法得到的湿润指数比环评法的小,且降水量大,差值也大,并存在季节变化。Humid index is at criterion measuring degree of wet/ dry climate and a quantify criterion for climatic characteristics in a area.It is widely used as studying climate,climate change and assessing the ecological environment.Based on the meteorological dada in the recent 50 years,the dry/wet condition in Dezhou was analyzed by two methods calculating humid index.The result showed that the humid index in Dezhou was downward and the climate was further dry owing to reducing precipitation and rising temperature.On the other hand,the humid index changed greatly from spring to winter.The summer humid index was maximum and spring humid index was minimum.And Penman＇s humid index was smaller than humid index of environmental assessment＇s humid index,the more the precipitation,the greater the difference.

关 键 词：德州 湿润指数 定量分析 

分 类 号：S162[农业科学—农业气象学]