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1·Afforestation The establishment of forest on land not previously forested, either by natural succession or by planting.

裸地造林（荒山造林）：以自然生成或者种植的方式在以前没有森林的陆地上建造森林的过程。

2·It is a useful practical technology for direct seeding in vegetation restoration, while method of natural succession can not be used.

直播造林在石质山地植被恢复中具有明显效果，自然演替恢复效果较差。

3·A natural vegetation succession occurs spontaneously or with the suitable man measures after the continuous disturbance is removed.

在持续干扰条件撤除后，植被系统将自行或在适度人为措施干预下进入自然演替序列。

4·Education can counteract the natural tendency to do the wrong thing, but the inexorable succession of generations requires that the basis for this knowledge be constantly refreshed.

教育可以对衡做错事的自然倾向，但必须持续才可以对抗一代传一代的无情力。

5·The natural vegetation succession rule is also obtained from many years vegetation investigation, which provided the scientific basis and the theory instruction for the vegetation to restore.

从多年的植被调查也得出了排土场边坡天然植被的演替规律，为人为进行排土场的植被恢复提供了科学依据和理论指导。

6·In the natural river succession, the Yellow river course is in its critical situation and will probably change again.

按河流演变的自然规律，黄河已达到其河床演变的临界值，很可能会再次改道。

7·The results show that after land use conversion, the natural vegetation communities soon exhibited positive succession, with increasing biomass and improving soil infiltration.

研究表明，随着植被演替的进展，群落生物量逐步增加，土壤入渗能力显著改善。