CAJ | 학술논문

蒸散量是内陆水循环的重要环节,探索西北干旱半干旱区气候因素对蒸散量的影响,有助于深入研究内陆水循环对气候变化的响应.本文利用玛纳斯河流域1964—2010年6个气象台站的日气温、风速、相对湿度等气候资料,通过Penman-Monteith公式估算玛纳斯河流域的参考作物蒸散量(RET),利用回归分析、Mann-Kendall等方法分析研究参考作物蒸散量的时空变化特征.结果表明:(1)玛纳斯河流域参考作物蒸散量空间差异明显,除石河子外南部绿洲区参考作物蒸散量均大于北部绿洲边缘区,季节变化趋势也较北部明显.从季节上来看,玛纳斯河流域参考作物蒸散量季节变化差异显著,夏季是参考作物蒸散量变化的主要贡献者,其次是秋季大于春季,冬季的变化最小.(2)南部绿洲区平均风速的减小是参考作物蒸散量减少的主要原因,北部绿洲边缘区相对湿度的增加是参考作物蒸散量减少的主要原因.
증산량시내륙수순배적중요배절,탐색서북간한반간한구기후인소대증산량적영향,유조우심입연구내륙수순배대기후변화적향응.본문이용마납사하류역1964—2010년6개기상태참적일기온、풍속、상대습도등기후자료,통과Penman-Monteith공식고산마납사하류역적삼고작물증산량(RET),이용회귀분석、Mann-Kendall등방법분석연구삼고작물증산량적시공변화특정.결과표명:(1)마납사하류역삼고작물증산량공간차이명현,제석하자외남부록주구삼고작물증산량균대우북부록주변연구,계절변화추세야교북부명현.종계절상래간,마납사하류역삼고작물증산량계절변화차이현저,하계시삼고작물증산량변화적주요공헌자,기차시추계대우춘계,동계적변화최소.(2)남부록주구평균풍속적감소시삼고작물증산량감소적주요원인,북부록주변연구상대습도적증가시삼고작물증산량감소적주요원인.
Evapotranspiration is a major link to inland water cycle,so exploration on the effect of climate factors on evapotranspiration in arid and semiarid regions in Northwestern China can contribute to further research in inland water cycle responding to climate change. Based on climatological data including daily temperature, wind speed and relative humidity from six meteorological stations in Manas River Valley from 1964 to 2010,through an estimation of reference evapotranspiration(RET)in the Manas River Valley using Penmam-Monteith Equation, space-time variation features of RET was analyzed by using regression analysis and Mann-Kendall method. The results are as follows.(1)There was an obvious spacial difference of RET in the Manas River Valley. Apart from Shihezi, RET in the south oasis was greater than that in the north oasis with more obvious change trend than the marginal zone of north oasis, the same as seasonal change trend. With respect to the obviously seasonal variation of the RET in Manas River Valley, the major contributor to RET is in summer followed by autumn, spring and winter.(2)The major reason for the decrease of RET was wind speed decrease in south oasis and increase of relative humidity in the north oasis fringe regions.