bifurcation ratio

Hydrology has obvious characteristics of the upper reaches of the Yangtze, water density, bifurcation ratio, bend coefficient and fractural have close relationship with regional structure, Neotectonics and seismic.

水文具有长江上游的典型特征，河网密度、分歧率、弯曲系数及分维均与区域构造、新构造运动和地震成正相关关系。土壤具有岩性差异背景及垂直谱带性。

The results indicate that: ( 1) Bifurcation ratio is positively related with the tree size and it is negatively related with the stand density. For the suppressed trees in stand, the bifurcation ratio does more affect from the stand density.

研究结果表明：（1）分枝率与林木的大小呈正相关，与林分密度呈负相关，且林分中生长水平越差的林木的分枝率受到林分密度的影响越大。

In the plot of vegetation removal, the high individual density caused the higher bifurcation ratio, the larger branch angle to horizon, longer branch length and narrow crown, which benefited growing fast and increasing competitiveness for light.

在清除植被的干扰样地中，由于高的植株密度使得树种形成较高的分枝率、大枝倾角、长枝条、窄小的树冠，以快速生长而摆脱受压状态。

In empirical formula is presented for the calculation of the bifurcation discharge ratio with the effect of the river training works taken into consideration.

根据试验结果，文中还提出了本河段整治后分流比计算的经验公式。