CAJ | 학술논문

以渭河流域21个气象站1960-2010年的年降水、年潜在蒸散及年均气温为研究对象，通过气候倾向率法、Mann-Kendall法、累积距平法和小波分析法对各气候要素的演变特性进行了分析。结果表明：①51 a来该流域年降水以1．55 mm/a线性趋势减少，年潜在蒸散以0．37 mm/a线性趋势增加，年均气温变化幅度不大，且3种气候要素的变化趋势均不显著；②年降水分布东多西少，南多北少，呈现出由东南向西北逐渐减少的趋势；年潜在蒸散在东西向呈现出南北带状相间分布的规律；年均气温分布东高西低，南高北低，呈现出由东南向西北逐渐降低的趋势；③年降水突变点为1972、1976和1985年；年潜在蒸散突变点为1962、1968和1974年；年均气温突变点为1977年；④年降水、年潜在蒸散及年均气温序列均有17 a和28 a周期。
이위하류역21개기상참1960-2010년적년강수、년잠재증산급년균기온위연구대상，통과기후경향솔법、Mann-Kendall법、루적거평법화소파분석법대각기후요소적연변특성진행료분석。결과표명：①51 a래해류역년강수이1．55 mm/a선성추세감소，년잠재증산이0．37 mm/a선성추세증가，년균기온변화폭도불대，차3충기후요소적변화추세균불현저；②년강수분포동다서소，남다북소，정현출유동남향서북축점감소적추세；년잠재증산재동서향정현출남북대상상간분포적규률；년균기온분포동고서저，남고북저，정현출유동남향서북축점강저적추세；③년강수돌변점위1972、1976화1985년；년잠재증산돌변점위1962、1968화1974년；년균기온돌변점위1977년；④년강수、년잠재증산급년균기온서렬균유17 a화28 a주기。
Taking the precipitation, potential evaporation and average temperature each year in 21 meteoro-logical stations of Weihe river from 1960 to 2010 as research object, this article analyzed the variation char-acteristics of climatic element by use of climatic trend rate, Mann-Kendall method, accumulated departure and wavelet analysis method.The results are that:①The annual precipitation decreased by 1.55 mm per year, the annual potential evapotranspiration increased by 0.37 mm per year, the annual average tempera-ture changed slightly, and the trend of these climatic elements were not significant.②The distribution of annual precipitation decreased from southeast to northwest of the basin, the annual potential evaporation showed a north-south zonal distribution in the eastwest direction, and the annual average temperature also decreased from southeast to northwest.③The mutation points of annual precipitation took place in 1972, 1976 and 1985, the mutation points of annual potential evaporation took place in 1962, 1968 and 1974, and that of annual average temperature took place in 1977.④The periods of the precipitation, potential e-vaporation and average temperature each year all have 17 years and 28years.