摘要
本文根据吉林省东部长白山区的地貌特点和火气气候特征,采用长序列雨量资料,分析了年雨量和5一9月雨量在各主要山脉(山休)不同坡地方位上的分布特征,获得了不同坡向的相对雨量分布系数,建立了和对雨危系数随坡向角而变化的数学模型,
According to the topographic and climatic characteristics and long-sequence precipitation data of the Changbai Mountain,the distributive charcteristics of coefficients of relative precipitationin in different slope directions of the main ridges in a year and from May to September are analyzed,and the relation functions between relative precipitation and slope direction angles are establi- shed.The order of precipitation in different slope directionsins on various ridges is SW>S>W>N>E>NE,their corresponding relative Precipitation coefficients are 1.083,1.071,1.060,0.917,0.913,0.912 in a year,and 1.071, 1.059,1.050,0.933,0.933,0.922 from May to September.The precipita- tion is highest in windward slopes and lowest in leeward slopes,and the former is 20.5%more than the latter.The effect of slope is great in the Panling, Weihuling Yingerling ridges and Dunhua basin.The effect of slope on preci- pitation depends on the interception of slope to air current.
出处
《地理科学》
CSSCI
CSCD
北大核心
1989年第3期252-258,共7页
Scientia Geographica Sinica
关键词
坡向
雨量
分布
长白山
Slope direction
Precipitation
The Changbai Mountain
