作　　者： ; ; ; ; ; ; (顾世祥）;

机构地区： 云南农业大学

出　　处： 《中国农村水利水电》 2010年第10期9-12,共4页

摘　　要： 根据云南省4个站30~40年的逐日气象资料,应用FAO-56 Penman-Monteith计算了参考作物的逐日需水量（ET0）,分析了ET0的年内年际变化特征;采用了Mann-Kendall方法,对ET0时间序列趋势进行了检验分析;采用了偏相关分析方法研究了各主要影响因子（水汽压、风速、日照、蒸发、降雨、海拔、纬度）对ET0的影响,结果表明：各站点的时空分布特征明显,各站的ET0呈下降趋势,最大值发生在20世纪70~80年代,最小值发生在21世纪,风速的变化对各站ET0的影响最大,水汽压和降雨最小,ET0随海拔的增加而降低,随纬度的增加而增加,反映了高原山区ET0的变化特点。 Based on daily meteorological data collected from four meteological stations in recent 30 to 40 years in Yunnan Province,the reference crop daily water requirement（ET0）is calculated with the FAO-56 Penman-Monteith equation.The change characters of annual and inter-annual ET0 are analyzed.ET0 time-series trend is tested and analyzed by Mann-Kendall Method,and the impact of each main climatic factor（vapor pressure,wind speed,sunshine hours,evaporation,precipitation,altitude,latitude）on ET0 is studied by the partial correlation analysis method.The results indicate that the temporal and spatial distribution characteristics of each station are obvious.ET0 values decreased in each region,and reached its maximum value from 1970s to 1980s and minimum value in 2000.The impact of the change of wind speed on ET0 in each station was extremely great,and vapor pressure and precipitation extremely small.ET0 decreased as the altitude increased and increased as the latitude increased.All these reflected the change characters of ET0 in plateau mountain areas.

关 键 词： 高原山区 公式 时空分布 偏相关

领　　域： [天文地球] [水利工程] [天文地球]