北沟林场不同坡面华北落叶松人工林生长分析

Growth of Larix principis-rupprechtii Plantation in Different Slope of Beigou Forest Farm

为了探知不同坡面华北落叶松林的生长状况,选取木兰围场北沟林场的落叶松人工林作为研究对象,通过对其生长的调查,找出适宜其生长的地形条件。结果显示:坡向对胸径生长量的影响方面,阴坡立地条件下华北落叶松胸径的生长量要高于阳坡;坡向对树高生长量的影响方面,阴坡立地条件下华北落叶松树高的生长量也高于阳坡。总体规律为阴坡立地条件下的华北落叶松生长优于阳坡。

In order to investigate growth of Larix principis-rupprechtii plantation in different slope areas , Larix principis-rupprechtii plantation of Beigou Forest Farm in Mulan-Weichang was selected as the research object. Through the investigation of its growth, the terrain conditions suitable for its growth were found out. Result shows that in toe eerms of slope position on groutb of DBH^the growth of DBH in Larix principis-rupprechtii under the condition of shady slope is higher than that on sunny slope. The effect of slope length on height growth was ana-lyzed, in the terms,fslope position on teignt grouth. The growth of tree height of Larix principis - rupprechtiii un-der the sile conaition,of shade slope is also higher than that of sunny slopes. The growth of Larix principis - rup- prechtii is optimal than that of sunny slope under the condition of shady slope.