论文部分内容阅读
从立体林业多层次、多产品、多效益的经营目标看,规划立体林业与规划混交造林是有区别的,至少要遵循以下几个原则: 一、空间、时间相差原则。一个生物个体和生物群落都要占据一定的空间,并随时间发生演变,因此,在规划立体林业时必须考虑空间的纵向组合和横向组合。纵向组合就是要根据树种的生态学特征,实行乔、灌、草、花、果、药有机地结合,做到不论地上部分或是地下部分都是各占各的空间,
From the perspective of multi-level, multi-product and multi-benefit management of stereoscopic forestry, there are differences between planning three-dimensional forestry and planning mixed afforestation. At least the following principles should be followed: 1. The principle of space and time difference. A living organism and a biome must occupy a certain space and evolve over time. Therefore, vertical and horizontal combinations of space must be considered in the planning of the three-dimensional forestry. Longitudinal combination is based on the ecological characteristics of tree species, the implementation of Joe, irrigation, grass, flowers, fruit, medicine organically combined, so that regardless of aboveground or underground parts are each of the respective space,