森林可保持水土、涵养水源、调节气候、净化空气、防风固沙。科学家们热情地称赞森林是绿色的金库、建材的苗圃、防风的勇士、防沙的长城、大地的阳伞、地球的肺脏、野生动物的摇篮、植被的经纬、煤炭的鼻祖、江河的源泉;是土壤的保育员、雨量的调度员,大气的保育员,除污的卫生员;是生物的制氧 Forests can maintain soil and water, conserve water, regulate climate, purify air and prevent wind and sand. Scientists warmly praised the forest as a green vault, nursery of building materials, windproof warrior, sand wall, earth parasol, earth’s lungs, wildlife cradle, vegetation latitude and longitude, originator of coal, source of rivers; Soil caregivers, dispatchers of rainfall, atmospheric caregivers, decontamination health workers; is biological oxygen