CAJ | 학술논문

选取位于黄河源区10个气象台站1971-2010年观测资料，运用彭曼-蒙蒂斯公式计算出各站参考作物蒸散量（ET0）。通过数学统计、相关分析、小波分析等方法对黄河源区 ET0分别作了空间分布、年内变化和年变化等特征分析，结果发现源区 ET0空间分布不均匀，呈现西北部大于东南部。年内 ET0逐月变化表现为典型的单峰型；源区 ET0的四季分布差异较大，夏季蒸散量最大，冬季最小，春、秋季次之。各季节 ET0与气温和日照呈显著正相关，而与降水量和相对湿度呈明显负相关。ET0年际变化为逐年波动式上升趋势，整个源区年平均 ET0以6．1 mm·10a-1的气候倾向率逐年增大。40 a间 ET0曾出现过两次较为明显的准周期变化，分别在20世纪70年代中期至80年代中期，约为准8 a周期，1990年以后基本表现为准5 a周期变化。
선취위우황하원구10개기상태참1971-2010년관측자료，운용팽만-몽체사공식계산출각참삼고작물증산량（ET0）。통과수학통계、상관분석、소파분석등방법대황하원구 ET0분별작료공간분포、년내변화화년변화등특정분석，결과발현원구 ET0공간분포불균균，정현서북부대우동남부。년내 ET0축월변화표현위전형적단봉형；원구 ET0적사계분포차이교대，하계증산량최대，동계최소，춘、추계차지。각계절 ET0여기온화일조정현저정상관，이여강수량화상대습도정명현부상관。ET0년제변화위축년파동식상승추세，정개원구년평균 ET0이6．1 mm·10a-1적기후경향솔축년증대。40 a간 ET0증출현과량차교위명현적준주기변화，분별재20세기70년대중기지80년대중기，약위준8 a주기，1990년이후기본표현위준5 a주기변화。
Based on the measured data of 10 meteorological stations from 1971 to 2010 in source region of Yellow River,utilized the Penman-Monteith Formula to calculate the reference crop evapotranspiration(ET0)for each station . Through several methods as mathematical statistic,correlation analysis and wavelet analysis to do the characteristic analy-sis by spatial distribution,variation within the year and annual change respectively,for the ET0 values in source region of Yellow River,the results showed that:The ET0 in source region of Yellow River were space uneven distributed,ap-peared the northwest region more than the southeast region .The monthly variation of showed a typical single peak,also the distribution of ET0 in four seasons appeared big difference .The ET0 in summer was maximum and minimum in win-ter,secondary in spring and autumn .The ET0 in each season presented a positive correlation with th temperature and sunshine hours,but significent negative correlation with the precipitation and relative humidity .The annual ET0 present-ed an increasing trend year by year,the yearly ET0 was average increased 6 .1 mm·10a-1 in whole source region .During the 40 years,the ET0 has appeared two times significent cyclic change as in middle of seventy to metaphase of eighty,al-most the cycle was 8 years,but after the 1990,it was basiclly expressed the changing cycle of 5 years .