文献类型：期刊文献

中文题名：赤松纯林林分特征对昆嵛山鳃扁叶蜂发生量的影响

英文题名：Impact of the stand characteristics of Pinus densiflora pure forests on the infestations of Cephalcia kunyushanica in Kunyushan region

作者：孙志强[1,2] 张星耀[2,3] 林琳[2,3] 梁军[2,3] 张英军[3,4] 于善栋[3,4] 杨晓燕[3,4]

第一作者：孙志强

机构：[1]国家林业局泡桐研究开发中心,郑州450003;[2]国家林业局森林保护重点试验室,中国林科院森林生态环境与保护研究所,北京100091;[3]山东昆嵛山森林生态系统定位研究站,烟台264100;[4]山东省烟台市昆嵛山林场,烟台264100

年份：2010

期号：4

起止页码：857-866

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家林业局基础资助项目(2006-458);国家“十一五”科技支撑资助项目(2006BAD08A12)

语种：中文

中文关键词：昆嵛山鳃扁叶蜂;赤松种群;虫口密度;郁闭度;林分密度

外文关键词：Cephalcia kunyushanica; Pinus densiflora population; larval density; canopy cover; tree number density

分类号：S791.245

摘要：为探讨昆嵛山鳃扁叶蜂的发生与天然赤松纯林的林分特征及其自然分布的关系,依托昆嵛山森林生态定位研究站所设立的40块永久性样地,比较了群落自然演替13 a的赤松种群特征以及林内灌草多样性指数,并分析了虫口密度与赤松林分特征的关系。结果表明,13 a自然生长,赤松种群的径级分布和高度结构出现显著变化。赤松种群中占总数60%的林木径级为5 cmThe objective of this study is to investigate where the infestation of Cephalcia kunyushanica most likely occurs at different stand characteristics and geographic locations of Pinus densiflora forest communities in Kunyushan region.Using measurements from 40 permanent sample plots within P.densiflora forests in Kunyushan Forest Farm,we analyzed the variation of the larval density of Cephalcia kunyushanica with the stand characteristics of forest communities and the diversity of shrubs and grasses as quantified Shannon diversity index（H） and evenness index（JS） in those forests from 1996 to 2008.We found that 60% of trees have the diameter at breast height（DBH） between 5 cm and 25 cm in 2008,about 5 1% higher than that in 1996,and 67% of the trees have tree height between 2m and 10 m in 2008,about 57% higher than that in 1996.However the mean tree number density decreased from 13000 trees/hm^2 in 1996 to 2377 trees/hm^2 in 2008.Both H and JS of the shrubs and grasses within the forests decreased from 2.69 and 0.85 in 1996 to 2.5 and 0.79,respectively;suggesting a decline in diversity in those forest communities.It was found that the larval density of C.kunyushanica is significantly correlated with the canopy cover（R=0.93 1,P〈0.005）,elevation of the forests（R=0.924、P〈0.005）,tree number density（R=0.780,P〈0.05）,DBH of the trees（R=0.816,P=0.025）.The spatial pattern of C.kunyushanica larval distribution seems to be consistent with the ＂resource concentration＂ hypothesis.