论文部分内容阅读
法国森林经理方法多样性的原因有3。首先是法国的森林由高山气候到地中海气候,由大陆性气候到海洋性气候,其垂直与水平分布均较广,而且地质土壤的变化也很大,因此适应于各种立地条件的树种育林法也就必然要求有相应的经理方法。其次,15年来法国林业的目的处于极大的变化中,针叶树的需要在增大,用材生产代替薪材的趋势也在增大。但是法国林业,却经常受到旧习惯,尤其是公共团体所有林,受劳动力和资金缺乏的限制,因此在经理方法中也经
There are three reasons why forest managers in France are methodologically diverse. The first is the French forest from the alpine climate to the Mediterranean climate, from the continental climate to the maritime climate, the vertical and horizontal distribution are wide, and the changes in the geological soil is also very large, so adapt to a variety of site conditions, It will inevitably require a corresponding manager method. Second, the purpose of the French forestry sector has changed dramatically in the past 15 years. The need for conifers is increasing and the use of lumber production instead of fuelwood is also on the rise. However, the French forestry, but often subject to old habits, especially for all public-owned forest, due to lack of labor and capital constraints, so in the manager’s method