AHP法在山地灾害综合防治的应用——以黑水滩河上游流域为例

The study on function of evergreen broad leaved forest floor ——Tiantong,Zhejiang Province as an example

通过建立山地灾害综合防治的多层次结构分析模型，构造判断矩阵，并计算出防治对策的子目标、制约因素和对策措施在实现总目标中相对重要性的优先顺序，再根据轻重缓急，确定急、近、中、远不同时间尺度。

The function of the evergreen broad leaved forest floor is studied.The results are as followes:The forest floor obstructed the litterfalll arrived to ground.The litter of weed of floor and the forest litterfall establised a very complex layer,which reduced near ground light intensity and made it below seedling light compesation point,the complex layer obstructed soil evaporation,made near graund over shady and wet,reduced keep ratio of the seeds of the tree dominant species and survial ratio of the forest regeneration seedling.The natural regeneration seedling of the forest come from “herb gip” mainly.