Translation of "primary forests" into Chinese

While conservation efforts are on the rise, however, the area of primary forests continues to decline.

不过,尽管养护努力呈上升趋势,但原始森林的面积继续下降。

However, logging practices often pose environmental problems and primary forests are converted into secondary forests.

不过,伐木做法往往造成环境问题,使原生林转变成次生林。