天然林 natural forests ; [林] natural forest ; natural stand ; virgin forest
天然林保护 to protect virgin forests ; natural forest conservation ; Natural forest protection
天然林资源保护工程 the project to protect natural forest resources ; natural forest protection project
雨林天然公园 rainforestation nature park
保护天然林 protect virgin forests
天然林保护工程 natural forest protection project ; NFPP ; the natural forest resources protection project
天然森林保护区 primitive area
天然造林法 natural afforestation
中欧天然林管理项目 NFMP
研究结论如下: 沙棘是一个良好的人工林天然化灌木物种,在黄土丘陵区该种群更新良好。
Hippophae rhamnoide is a nicer shrub species for plantation becoming savageness. This population could renew very well in Hilly-gully region of Loess plateau.
对油松天然林的林分结构进行了研究。
Natural forest stand structure of Pinus tabulaeformis was studied.
河北省的杜松林是残存的天然林。
The forest of Juniperus rigida is a natural residual forest in Hebei province.
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