afforested areas meaning in English

绿化区域（面积）

For instance road construction can use the brick that set straw , poriferous pitch more , raise afforest area , at the same time laid underground permeates apparatus , those who increase groundwater superstratum to lie between water layer is osmotic
比如道路建设可以多采用嵌草砖、多孔沥青，增加绿化面积，同时铺设地下渗透装置，增加地下水上层隔水层的渗透性。