四川盆地日本落叶松林抚育间伐研究

Research on Tending Thinning of Japanese Larch Forest in the Sichuan Basin

本文选择四川盆地的川东北山地、川西南山地、川西高山峡谷区的日本落叶松幼龄林、中壮龄林、近熟林,对日本落叶松人工林的林分结构、郁闭度、密度、蓄积量、生产力等调查和树干解析分析,根据日本落叶松人工林胸径连年生长量下降时间的变化,林分郁闭度需要恢复的时间,自然稀疏规律的综合分析,提出抚育间伐技术,并对初植密度与日本落叶松人工林合理间伐的相关关系提出建议。

In this artiel,the investigation and analysis were made of the stand structure, canopy density, density, volume, productivity and stem of Japanese larch plantations by selecting Japanese larch sapling forest, mid-age forest, near-mature forest in the Northeast mountain, southwest mountain, west mountain canyon areas of the Sichuan Basin. According to the change of Japanese larch plantation DBH current an- nual increment decreasing time , the recovery time of canopy density and a comprehensive analysis of the natural thinning, the thinning technology was proposed, and the reasonable suggestion was put forward on the relationship between planting density and reasonable thinning of Japanse larch plantation.