The main results are as follows: 1 . Woody plant density in degraded ecosystem is in close relation with restoration stage of vegetation.
结果表明：1。退化生态系统木本植物的密度与植被的恢复阶段紧密相关；
However, the waste gas discharged by the third stage expanding construction project of Jiujiang power plant will influence the vegetation of Lushanmountain.
但九江电厂三期扩建工程废气的排放，将对庐山植被产生不同程度的影响。
During the early geological and historic stage, it was the climate that mainly influenced the change of the vegetation in the north of Shaanxi.
陕北植被变迁在地质时期以及历史时期早期，主要由气候条件所控制，植被类型随气候的冷暖干湿变化而变迁。
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