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特别是山区和冲积区直接连结的,所谓直接型流域的山区,开发活动是惊人的.这是,在形态方面,在冲积区内或者在四周分布着群山,并以洪积层.新第三纪层及花岗岩强风化层等为主.由于社会地理条件以及土木施工等条件极为方便,正在作为住宅和第三期建设的对象,进行着开发活动.当然.这些山区的森林,曾经作为薪炭林加以抚育,而现在只意味着是杂木林,已不适于用作生产木材的森林.然而,在防御自然灾害方面以及在保护环境的意义上,几乎还都起到了重要的作用.
In particular, mountainous areas directly linked to mountainous and alluvial areas, so-called direct-type basins, are spectacular in their developmental activities, in the form of mountains and alluvial deposits in alluvial or surrounding alluvial areas. Tertiary and granite strong weathered layers, etc. Due to the extremely convenient social and geographical conditions as well as the conditions of civil engineering construction, development activities are underway as residential buildings and the third phase of construction. Of course, the forests in these mountainous areas were once used as firewood The forest is nurtured, and now it only means that it is a mixed forest, which is no longer suitable for use as a forest for the production of wood. However, almost all play an important role in the prevention of natural disasters and in the protection of the environment.