in roadbed protection of road besides river in forest region.

The study of spure-dikes protection for subgrade river side;

There are lots of washout by flood of highways and diseases of highways caused by natural factors, and washout by flood of subgrade river side is in a certain proportion.

This paper discussed the damage and cause of forest road frothing in Fujian and the prevention measures to this issue were put forward then.

In the paper, the effects of forest roads on the ecological environment are analyzed and the common problems in the process of environment protection in forest regions where forest roads are constructed are concluded and summed.

of stone built retaining walls on forest region highways in Fujian Province were analysed and studied,this paper raised various technological requirements and problems should be paid attention to so as to avoid the occarances of diseases and guarantee stable roadbeds and open highways.