设置间伐试验标准地进行长期地观测和研究,以制定不同树种,不同年龄阶段,不同立地条件下的林分管理密度表(或图),是提高森林间伐的技术、理论和经营管理水平的重要途径,也是森林经营学重要的研究课题之一。 间伐试验是个相当困难的研究课题。主要是间伐效果分析的难度较大,其次表现在试验标准地的设测上。标准地设测是基础,如方法不当,虽花工费时,仍不能达到预期目的,效果分析更无从谈起。据笔 Setting long-term observation and research on the standard of thinning test to make the tree management density table (or map) of different tree species, different age stages and different site conditions is important to improve the technology, theory and management level of forest thinning Ways, but also one of the important research topics in forest management. Thinning test is a very difficult research topic. It is mainly difficult to analyze the thinning effect, followed by the design of the test standard. Standard test is the basis of design, such as improper method, although the cost of time and effort, still can not achieve the desired purpose, the effect analysis even more talk about. According to the pen