当我们从高空向下俯瞰,大片的绿色成为我们绿化成功的骄傲,可当我们仔细研究这些大片的人造森林,我们不得不担心“绿色沙漠”正在用另一种方式破坏我们的环境,占领生物的空间却没有带给人类应有的效益。 植被在天然形成过程中,一些先锋树种,如松树、杨树、烨树等先生长起来,但通常并不十分密集,因此这些先锋树木既能遮挡过度的阳光照射,同时又有足够的阳光透到地面,使地表环境趋于温 As we look down from above, large greens are proud of our success in greening. As we study these large tracts of man-made forests carefully, we have to worry that Green Desert is destroying our environment in another way, occupying creatures The space did not bring the benefits to mankind. During the natural formation of vegetation, some pioneer species such as pine, poplar and yew grow up, but are usually not very dense. Therefore, these pioneer trees can not only block excessive sunlight but also have enough sunshine To the ground, the surface environment tends to warm