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。
Natural vegetation similarity coefficient in the same desertification stage is higher than the value in different stages of those stands.
相同沙漠化阶段林地间天然植被的相似性系数较大，不同沙漠化阶段林地间相似性系数较小。
Under the artificial vegetation, soil forming process has been started although it is still in an initial stage, and the biological sand-fixing effect is obvious.
人工调控下的绿地，流沙开始成土发育，但发育仍处于初级较低水平，生物固沙取得明显效果。
Under the artificial vegetation, soil forming process has been started although it is still in an initial stage, and the biological sand-fixing effect is obvious.
人工调控下的绿地，流沙开始成土发育，但发育仍处于初级较低水平，生物固沙取得明显效果。
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