作　　者： ; ; ; ; ; ;

机构地区： 华南农业大学林学院

出　　处： 《生态学杂志》 2012年第6期1390-1396,共7页

摘　　要： 应用样带调查法,于2009年调查了2008年冰灾后南岭五指山森林优势种及保护树种的受损及恢复情况。在3条长2～7km、宽15m的样带调查区共记录了2832株胸径>2cm的树木,它们隶属于53科96属141种,其中2072株林木受到损伤,总受损率为73%,61%为轻度受损。灾后一年,约84%的个体能通过萌条恢复生长,但16%未出现萌条而死亡或濒临死亡。群落优势类群壳斗科、樟科、木兰科和金缕梅科优势种的受损率和萌条恢复率均较高。共记录了15种国家级保护树种,以广东松(Pinus kwangtungensis)和福建柏(Fokienia hodginsii)最为常见,除三尖杉(Cephalotaxus fortunei)和穗花杉(Amentotaxus argot-aenia)外,其余种类均有不同程度的受损,其中59%死亡或濒临死亡。此外,在43个具3株以下的小频度种中,25%的个体未见恢复而死亡。本研究结果揭示了2008年冰雪灾害对南岭五指山森林林木造成了严重的伤害,大多数树种具有较强的自然恢复能力,能以快速萌条方式进行恢复,但部分濒危珍稀植物和低密度种的死亡可能会改变原有群落的物种组成,进而影响未来群落的演替进程。 By using belt transect method, an investigation was conducted on the damaged status and early recovery of the dominant tree species and protected tree species in Wuzhishan of Nan- ling Mountains after the ice storm in 2008. On three belt transects of 2-7 km long and 15 m wide, a total of 2832 trees with diameter at breast height （DBH） 〉2 cm were recorded, belong- ing to 141 species of 53 families and 96 genera. The damaged rate was 73% , of which, 6i% was slightly damaged. About 84% of the damaged individuals more or less recovered one year after the ice storm, but nearly 16% did not recover, died, or were dying. For the dominant tree species in Fagaceae, Lauraceae, Magnoliaceae and Hamamelidaceae, their damaged rates and recovery rates were higher. Fifteen nationally protected tree species were recorded, of which, Pinus kwangtungensis and Fokienia hodginsii were most common. Except for Cephalotaxus fortu- nei and Amentoxtaxus argotaenia, the other protected species were more or less damaged, with 59% of them died or dying. In addition, 25% of the low density species with 〈3 individuals suf- fered various damages or died. The extreme ice storm in 2008 caused serious damage to the forest trees, but most species could recover naturally by sprouting. However, the loss of some rare and vulnerable species could alter the species composition, and further, affect the community succes- sion process in the future.

关 键 词： 冰灾 南岭 保护植物 受损率 恢复率

领　　域： [农业科学]