搜索结果: 1-6 共查到“林学 hardwood”相关记录6条 . 查询时间(0.781 秒)
Impact of logging intensity on stem density, basal area and biodiversity indices five years after logging in a Caspian hardwood forest
harvesting intensity forest biodiversity northern Iran
2017/6/26
The aim of the present study was to analyse the impacts of different logging intensities after five years from logging including non-logged, low (3.4 felled stems per hectare), medium (5.2 felled stem...
Crowns of “forgotten” standards in hardwood floodplain forests
ash oak reserved trees biodiversity crown competition crown projection
2018/3/6
Floodplain forests have traditionally been managed using the coppice-with-standards silvicultural system for centuries.
After abandoning this silvicultural system approximately in the 1950s the crown...
Nutrient Use Efficiency of Three Fast Growing Hardwood Species across a Resource Gradient
Nutrient Use Efficiency Resorption N:P Biomass Production
2013/3/4
Attitudes regarding traditional energy sources have shifted toward renewable resources. Specifically, short-rotation woody crop supply systems have become more prevalent for biomass and biofuel produc...
Predicting Stem Windthrow Probability in a Northern Hardwood Forest Using a Wind Intensity Bio-Indicator Approach
Windthrow Prediction Species Wind-Firmness Tolerant Hardwood Forests Silviculture Guidelines
2013/3/4
Unlike fire or insect outbreaks, for which a suppression program can be implemented, it is impossible to prevent a windstorm event or stop it while it is occurring. Reducing stand susceptibility to wi...
Effect of Different Collection Times and Some Treatments on Rooting and Chemical Internal Constituents of Bitter Almond Hardwood Cuttings
Bitter almond hardwood cuttings rooting and chemical constituents
2010/11/12
This study was carried out through the two successive seasons of 1999 / 2001 and 2000/2001
in seram house at the nursery of Agriculture, Cairo University, Egypt. Bitter almond hardwood cuttings were ...
Lessons Learned from the Quesnel Hardwood Co-operative：Case Study
Lessons Learned Quesnel Hardwood Co-operative Case Study
2009/2/5
A group of independent small businesses in the area of Quesnel, British Columbia—including logging
contractors, sawmillers, and forest industry members—formed the Quesnel Hardwood Co-operative in 199...