天山西部林区云杉人工更新的成因分析

据调查收集的大量资料指出:引起天山西部林区更新地云杉苗大死亡的主要原因是畜害和云杉雪霉病害。当前云杉雪霉病害已成为影响天西林区云杉人工更新的主要因素。经研究采用有效的对策是:1推广云杉大苗更新技术;2开展更新地云杉雪霉病害防治。

Analyzing the Contributing Factors in the Spruce Artificial Regeneration in the Western Forest Region of the Tianshan Mountain

Based on quantity of investigated data, the paper indicated that snow mould that snow mould and livestock destruction consist of the main causes of the severe death of spruce seedlings on the artificially regenerated stands in the western forest region of the Tianshan Mountains. And today the snow mould of spruce has become the primary factor affecting on the spruce artilicial regeneration there. The effective ways to deal with the situation are as follows: 1) To spread the technique of regenerating the spruce with bigger seedlings; 2) To carry out prevention and control of the spruce snow mould on the regenerated stands.