冰雪灾害对韶关地区3类典型植物群落的影响调查

The influence of ice and snow disaster on three typical plant communities in Shaoguan

运用群落样方调查方法,对韶关典型受灾地区3类典型植物群落的影响进行了调查。结果表明,公路人工边坡植物紫穗槐、百喜草以及野生乡土植物类芦生长旺盛,对华南边坡的植被修复有较好的应用价值;乡土植物种抗寒性普遍比外来植物种强,人工种植马尾松纯林受损严重,森林火灾和浅薄的石灰岩土不利于马尾松恢复生长;著名珍稀植物南方红豆杉的枝条受冰雪重力压断,但未出现冻死现象,在开阔地带生长的南方红豆杉比山地的有更强抗寒能力,并发现红豆杉伴生植物灰叶杉木和桃叶石楠生长良好。

A survey of the three typical plant communities in the snow-disaster-hit areas in Shaoguan by the use of community sampling method found that planted Amorpha fruticosa and Paspalum natatum and naturally-growing Neyraudia reynaudiana which are very helpul for the recovery of the vegetation in the slopes along the roads in South China grow well.Compared with exotic plants,native ones showed a better cold-resistance.Pure planted Pinus massoniana forest was seriously damaged and was difficult to recover from a fire or grow in thin limestone soil.No Taxus mairei were frozen to death though some of their branches were broken by heavy snow.Taxus mairei growing in open areas are better in cold-resistance than those in hills. Cunninghamia lanceolaata（Lamb.） Hook.cv Glauca and Photinia prunifolia,the companions of Taxus mairei,grow well.