大老岭林场次生林更新方式对林分组成和林地肥力的影响分析

Effect on Regeneration Pattern of Secondary Forest in Dalaoling Forest Farm to Stand Composition and Fertility of Forestry Land

摘要:

利用湖北宜昌大老岭林场次生林采伐迹地3种不同更新方式林分的调查数据，对不同的更新方式的林分组从树种组成、林下植被和林木生长三个方面分析了林分组成；从林地水分物理性质和林地化学性质分析了林地肥力状况，得出如下结论：1．不同更新方式的林分组成和林地肥力有明显不同；2．次生林采伐迹地更新所形成的人工林表现出不稳定性。

Abstract:

Based on surveyed data related to stand of three different regeneration patterns in harvest slash of secondary forest in Dalaoling national-forest-farm of Yichang in Hubei, analyzed the stand composition from three aspects of stand group of different regeneration pattern from tree species composition, vegetation under forest and tree growth; analyzed physical characteristic from moisture and fertility situation of forestry land and drawn following conclusion: 1. The stand composition of different regeneration pattern and fertility of forestry land are obviously different; 2. What regeneration of harvested slash of secondary forest formed artificial plantation performs non-stable.