雨雪冰冻灾害对广东杨东山十二度水保护区常绿与落叶混交林凋落物的影响  

Effects of the Frozen Rain and Snow Disaster to the Litterfall of Evergreen and Deciduous Broadleaved Mixed Forest in Yangdongshan Shierdushui Nature Reserve of Guangdong

作　　者：骆土寿[1] 张国平 吴仲民[1] 翁启杰[1] 罗鑫华 张娜[1] 肖以华[1] 曾繁助 王旭[1] 余伟盛 赵霞[1] 

机构地区：[1]中国林业科学研究院热带林业研究所,广州510520 [2]广东杨东山十二度水省级自然保护区,乐昌512200 [3]广东大瑶山省级自然保护区,乐昌512200

出　　处：《林业科学》2008年第11期177-183,共7页Scientia Silvae Sinicae

基　　金：国家自然科学基金项目“成熟林中‘非正常凋落物’对土壤碳的影响(30870417)”;海南尖峰岭热带林生态系统定位研究站和中国林业科学研究院南岭冰雪灾害受损森林生态系统定位研究站的研究内容之一

摘　　要：根据2008年初雨雪冰冻灾害对广东杨东山十二度水省级自然保护区不同海拔高度常绿与落叶阔叶混交林的受害样地调查资料,对森林的受害程度及凋落物现存量进行研究,结果表明:森林受害程度与海拔高度成正比,在海拔700～1000m范围内的植被严重受害,灾害产生的非正常凋落物量13.96～19.59t·hm-2,林地凋落物现存量在23.39～29.97t·hm-2,远高于年凋落量,产生严重次生灾害隐患,必须制定适宜的林地卫生清理、促进更新措施和恢复措施,以求尽快恢复森林资源及生态环境。Based on the survey data of the evergreen and deciduous broadleaved mixed forest damaged by the frozen rain and snow at the plots in Yangdongshan Shierdushui Nature Reserve,Guangdong Province in early 2008.The forest damage degree and the existing falling biomass at different altitudes were investigated.The result showed that,the damage degree of the forest was directly proportional to the altitude.From 700 to 1 000 m of altitude,the vegetation damage was serious,and the abnormal litterfall was 13.96～19.59 t·hm^-2,and the total existing litterfall was 23.39～29.97 t·hm^-2,which was much higher than that of the usual annual amount.The disaster might also cause further potential dangers of secondary disasters.It was necessary to take appropriate health clearance of woodland,and other measures to promote renew and rehabilitation,for quickly restoring forest resources and the ecological environment.

关 键 词：雨雪冰冻灾害 受害程度 森林凋落物 非正常凋落物 南岭 杨东山十二度水自然保护区 

分 类 号：Q948[生物学—植物学]