thinning regime

The study of thinning effects on forest development will help not only to perfect the model system of planted forest growth and yield, but to take a reasonable thinning regime for optimal forest management as well.

通过抚育间伐对森林生长影响的研究，不但有利于人工林分生长和收获模型体系的建立和完善，而且有助于采取合理的间伐方式和间伐强度，实现森林经营的优化管理。

The density of the stand for producing middle pole trees should be 3 460 tree per hectare, the spacing should be 1.7m × 1.7m. ( 2) high planting density and severe thinning regime is favorable to all kind of timber production;

中径材1.7m×1.7m，3460株/hm2。（2）采用较高的初植密度，并采用强度较大的间伐机制，对小径材和大、中径材的生产都是有利的；