摘要
针对塞罕坝地区3.5万hm2华北落叶松人工林,从迹地更新的树种选择方面,系统研究和总结了塞罕坝地区人工林采伐迹地更新的可供选择树种,探索出了不同立地条件下人工林迹地更新的树种选择问题。对塞罕坝机械林场人工林迹地更新技术的研究结果表明,人工林采伐迹地更新的树种选择问题,其核心问题是适地适树问题,特别是选树适地。在塞罕坝机械林场的大部分地区,华北落叶松一代林的生长表现和经济效益均明显优于其他乔木树种。在华北落叶松一代人工林采伐迹地上进行连作,尽管其表现明显优于其他供试乔木树种,但还是在一定程度上存在衰退的问题。在华北落叶松人工林一代林的采伐迹地上进行更新造林,首选树种仍为华北落叶松,但第三代人工林是否还可以将其作为首选,需要进一步研究论证。
According to 3.5 × 104 hm^2 Larix principis - rupprechtii plantation in Saihanba area,this thesis has been studied and summarized the optional regeneration tree species of plantation logged area systematically in Saihanba area and explored the problems of regeneration tree species selection of plantation logged area under different site conditions from the aspect of regeneration tree species selection of the logged area. The research results of regeneration technique of plantation logged area in Saihanba Mechanized Forest Farm show that the core problem is to plant trees in right soil, especially, is to select trees in right soil in the problems of regeneration tree species selection of plantation logged area. Both of the growth performance and economic benefit of the first rotation stands of Larix principis - rupprechtii are better than other arbor species in most regions of Saihanba mechanical forest farm. Although the continuous cropping manifestations on the plantation logged area of first rotation stands of Larix principis - rupprechtii are better than other testing arbor species＇ obviously, forest trees declining problems are existed to some extent. Although the first choice of regeneration planting trees species still is Larix principis - rupprechtii on the plantation logged area of first rotation stands of Larix principis - rupprechtii, whether plantation of the third rotation stands of Larix principis - rupprechtii still is first choice of trees species needs further research and demonstrate.
出处
《河北林果研究》
2008年第4期366-369,共4页
Hebei Journal of Forestry and Orchard Research
基金
河北省林业局资助项目
关键词
塞罕坝
华北落叶松
人工林
采伐迹地
适地适树
Saihanba
Larix principis - rupprechtii
plantation
logged area
plant trees in right site
