CAJ | 학술논문

利用磴口县近57年（1954-2010）逐月日照时数资料，分析了磴口县年代际、年际、各季及各月的日照时数变化特征。结果表明：（1）年及四季日照时数各年代际变化规律均为20世纪80年代最小；2001-2010年最大；70年代、90年代偏多；50年代偏少；80年代是日照时数变化的转折期。（2）日照时数夏季＞春季＞秋季＞冬季，分别占全年的28．1％、26．6％、24．1％和21．2％。日照时数年内分布规律为单峰型，5月最大，其次为6月，12月最小。（3）年及春季和夏季日照时数二次拟合曲线通过了0．05水平的显著性检验，均表现为70年代中期之前，日照时数呈下降趋势，70年代中期之后呈上升趋势，而且上升速度远大于下降速度，并且在90年代之后均处于正距平。（4）生长季日照时数年际变化与年日照时数变化最相似，生长季日照时数的变化对全年的变化趋势起着主导作用。
이용등구현근57년（1954-2010）축월일조시수자료，분석료등구현년대제、년제、각계급각월적일조시수변화특정。결과표명：（1）년급사계일조시수각년대제변화규률균위20세기80년대최소；2001-2010년최대；70년대、90년대편다；50년대편소；80년대시일조시수변화적전절기。（2）일조시수하계＞춘계＞추계＞동계，분별점전년적28．1％、26．6％、24．1％화21．2％。일조시수년내분포규률위단봉형，5월최대，기차위6월，12월최소。（3）년급춘계화하계일조시수이차의합곡선통과료0．05수평적현저성검험，균표현위70년대중기지전，일조시수정하강추세，70년대중기지후정상승추세，이차상승속도원대우하강속도，병차재90년대지후균처우정거평。（4）생장계일조시수년제변화여년일조시수변화최상사，생장계일조시수적변화대전년적변화추세기착주도작용。
Using monthly sunshine hour data in the recent 57 years (1954 - 2010) ,this paper analyzed the variation characteristics of inter-decadal and inter-annual ,each quarter and per-month sunshine duration in Dengkou region . Results were as follows :(1) Annual and seasonal variation of sunshine hours of each intergeneration was the lowest in the 1980s ,the largest in 2001 - 2010 ,more in the 1970s and 1990s ,and less in the 1950s .Inflection point of sunshine duration was in the 1980s ;(2) Sunshine hours in four seasons was summer > spring > autumn > winter , respectively accounts for 28 .1% ,26 .6% ,24 .1% and 21 .2% .Distribution of sunshine hours during the years was a single peak ,with the largest in May ,followed by June ,the minimum in December ;(3) The quadratic fitting curves of the year ,as well as spring and summer were passed the 0 .05 level of significance test ,showing a down-ward trend before the mid 1970s of the sunshine time ,an upward trend after the mid 1970s ,with the rising rate much faster than the decline rate ,while both rates presenting the positive anomaly after the 1990s ;(4) The inter-an-nual variations of sunshine time was the most similar with that in the growing season .The variation of sunshine du-ration in the growing season played a leading role throughout the year .