论文部分内容阅读
以实现森林永续为目标来进行森林收获调正,始终是森林计划的中心。随着林业的发展和科学技术的进步,出现了许多收获调整的方法。大致可以分为两大类:一是以皆伐单层林作业为基础的有区划轮伐法、平分法、法正蓄积法、龄级法、以及理财原则的林分经济法等;二是以单株择伐作业为基础的检查法等。从理论与实践看,龄级法和检查法仍是确定森林采伐和编别森林计划的基础。龄级法的指导思想是法正林。它的要领是在作业级内按龄级高低顺序,将最近应采的老林编入施业期,以控制其年伐面积。采伐面积。采伐面积的大小根据法正龄级分配以现实龄级分配的差异加以词整,追求每个龄级组面积相等,因为只有这样才能实现采伐量接近生长量,才能获得高的生产力。
Forest harvest remediation with the goal of achieving sustainable forest has always been the center of forest planning. With the development of forestry and the advancement of science and technology, many methods of adjustment and adjustment have emerged. Can be divided into two broad categories: First, based on clear-cut single-stratum operations based on the division of rotation method, the equinoxes method, the law is the accumulation method, age method, and the financial principles of economic division of the law; Second is Selective logging operations based on the inspection method. From the perspective of theory and practice, age-class law and inspection are still the basis for determining forest harvesting and plant-for-forest planning. The guiding ideology of age-class law is Fa-Lin. Its essentials is in the operation level according to the order of age level, the recent mining should be incorporated into the application period, in order to control the annual cutting area. Logging area. The size of logging area is based on the distribution of legal age class with the distribution of actual age class. The pursuit of equal area for each age class, because the only way to achieve the amount of logging close to the amount of growth in order to obtain high productivity.