自R.E.Horton提出河系结构的三条基本规律以来,河系结构已成为国外水文地貌界的重要研究课题,并已取得长足进展。这一课题在我国基本上还是空白,仅承继成对黄土高原地区做过初步研究。Horton 规律是否具有普遍意义、本文将用大兴安岭冰缘地区的材料给予分析。

After analysing the data of 10 small drainage basin composition of periglacialregion of Dahinggan Ling Mountain, it showed that the R. E. Horton’s law of waterdrainage composition is accurate.The retationship between the mean stream length accumulation value and streamorder is better than the relationship between the mean stream length and stream order.The number of interbasin equals to the total number of streams in the basin,minus one. The relationship of the magnitude of interbasin area and streams orderform a positive geometric series.The drainage density, constant of channal maintenance area and the frequency-distribution of first order stream area on the eastcrn slopes of Dahinggan Ling moun-tain differ signifiantly from the western slopes, which is caused by climatic difference.Morphological features of dramage basins may be described by the mean basin area,relief ratio and stream length, they have a multiple corrclation with the streamgradient.