林分密度控制图是根据林分密度法则研制的一种图式模型。由等树高线、等直径线、等疏密度线、饱和密度线和自然希疏线组成。主要用来表达林分的生长与密度之间的数量变化关系。图式模型具有直观、简明和便于应用的特点。因此,随着经营强度的日益提高,将会逐渐成为资源调查、生长予测、定量间伐、造林设计、更新普查和经营管理的重要工具。 Stand density control chart is based on the principle of stand density developed a schema model. By the trees such as high-line, such as diameter, such as density lines, density lines and natural sparse lines composed. Mainly used to express the growth and density of the relationship between the number of changes. Schematic model with intuitive, concise and easy to use features. Therefore, with the increasing intensity of operation, it will gradually become an important tool for resource survey, growth forecast, quantitative thinning, afforestation design, census updating and management.