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当前位置: 首页 > 文章 > 临汾市37年蒸发皿蒸发量变化特征及影响因素 中国农学通报 2017,33 (5) 72-76
Position: Home > Articles > Pan Evaporation Variation Characteristics and Influencing Factors in Linfen for 37 Years Chinese Agricultural Science Bulletin 2017,33 (5) 72-76

临汾市37年蒸发皿蒸发量变化特征及影响因素

作  者：
戴临栋;左洪超;陈伯龙;苗文辉;杨宾
单  位：
兰州大学大气科学学院
关键词：
蒸发皿蒸发量;变化特征;影响因素:临汾市
摘  要：
利用山西省临汾市17个气象观测站1977—2013年37年蒸发皿蒸发量及其相关气象要素资料,采用线性倾向估计、累积距平和完全相关系数法,初步分析了临汾市蒸发皿蒸发量气候变化特征及影响因素。结果表明:夏季和春季蒸发量较大,分别约占全年39.3%和34.0%,其次为秋季和冬季,冬季蒸发量最少。37年年蒸发量呈波动下降变化趋势。四季蒸发量中,春季、夏季、秋季、冬季均呈现下降趋势,其中夏季蒸发量下降趋势最明显,其变化率为-26.30 mm/10 a;其次为秋季,为-16.47 mm/10 a;春季和冬季分别为-10.47 mm/10 a和-7.91 mm/10 a。从年代际特征来看,临汾市年蒸发量年代际变化整体呈现出"增加—减少"趋势。从年代际变化季节特征来看,临汾市春季呈现出"减少—增加"趋势,夏季和秋季呈现出"增加—减小"趋势,冬季呈现出一致减小趋势。临汾市蒸发皿蒸发量与日较差、气温、日照时数呈正相关,与降水、水汽压、相对湿度呈负相关。日照时数与气温是影响临汾市蒸发量减少的主要因素。
译  名：
Pan Evaporation Variation Characteristics and Influencing Factors in Linfen for 37 Years
作  者：
Dai Lindong;Zuo Hongchao;Chen Bolong;Miao Wenhui;Yang Bin;College of Atmospheric Science, Lanzhou University;
关键词：
pan evaporation;;variation characteristics;;influencing factors;;Linfen
摘  要：
Based on data of pan evaporation and related meteorological elements for nearly 37 years from 17 meteorological observations in Linfen, the climate change characteristics and influencing factors of panevaporation were analyzed by using methods of linear tendency analysis, accumulative anomaly and completecorrelation coefficient. The results showed that: evaporation contribution in summer and spring was prominent,which accounted for about 39.3% and 34.0% respectively throughout the year; followed by evaporation inautumn and winter, and evaporation in winter was the least; pan evaporation for 37 years presented a decliningvolatility trend; the evaporation in the four seasons had a downward trend, and the decline of evaporation insummer was most obvious, followed by that in autumn; besides, the change rate of evaporation in summer,autumn, spring and winter was-26.30 mm/10 a,-16.47 mm/10 a,-10.47 mm/10 a,-7.91 mm/10 a,respectively; from the point of decadal characteristics, decadal change of the overall annual evaporation inLinfen presented"increase-reduce"trend; from the view of seasonal change characteristics, spring presented"reduce-increase"trend, summer and autumn presented"increase-reduce"trend, winter presented reducingtrend. There were obviously positive correlations between evaporation and temperature, sunshine hours, diurnalrange, but there were negative correlations between evaporation and precipitation, vapor pressure, relativehumidity. The temperature, sunshine hours were the major factors affecting the downward pan evaporation inLinfen.

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