福建省侵蚀坡地治理与开发中的几个问题

Some Questions of Improvement and Utilization of Eroded Slopes in Fujian Province

根据大量的调查研究 ,指出侵蚀坡地植被的重建必须着眼于建立地带性森林系统 ;提出植被群落发育程度必需与土壤肥力恢复水平相适应理论 ,即在先锋群落配置中要注重草被层的生长 ;坡地果园的开发必须注重地被植物的建设 ;对陡坡窄面梯田的保水功能提出质疑 ,提出在一定自然和社会经济条件下 ,就坡挖穴、山边沟

Based on a series of case studies,it is pointed out that the focus should be put on the influence of the rule of zonality and plant community succession upon vegetation rebuilding on eroded slopes,and the developing process of artificial plant community must be in accordance with the recovery degree of soil fertility. It is suggested that the grass vegetation growth should be focused when rebuilding plant community. The conclusion is that the contour terrace has a sound function of soil conservation,but also has its limits, the contour terrace should be only adopted on gentle slope. The method of planting directly on slopes with remaining surrounding original vegetation combined with the hill side ditch could be implemented. The hill side ditch with forage grass cover or grass belts could be popularized in the areas with advanced economy and expensive labour cost.