,Does selective logging change ground-dwelling beetle assemblages in a subtropical broad-leafed fore

来源 :中国昆虫科学(英文版) | 被引量 : 0次 | 上传用户:diod
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Selective logging with natural regeneration is advocated as a near-to-nature strategy and has been implemented in many forested systems during the last decades.However,the efficiency of such practices for the maintenance of forest species are poorly understood.We compared the species richness,abundance and composition of grounddwelling beetles between selectively logged and unlogged forests to evaluate the possible effects of selective logging in a subtropical broad-leafed forest in southeaste China.Using pitfall traps,beetles were sampled in two naturally regenerating stands after clearcuts (ca.50 years old,stem-exclusion stage:selectively logged 20 years ago) and two mature stands (> 80 years old,understory re-initiation stage:selectively logged 50 years ago) during 2009 and 2010.Overall,selective logging had no significant effects on total beetle richness and abundance,but saproxylic species group and some abundant forest species significantly decreased in abundance in selectively logged plots compared with unlogged plots in mature stands.Beetle assemblages showed significant differences between selectively logged and unlogged plots in mature stands.Some environmental characteristics associated with selective logging (e.g.,logging strategy,stand age,and cover of shrub and moss layers) were the most important variables explaining beetle assemblage structure.Our results conclude that selective logging has no significant impacts on overall richness and abundance of ground-dwelling beetles.However,the negative effects of selective logging on saproxylic species group and some unlogged forest specialists highlight the need for large intact forested areas for sustaining the existence of forest specialist beetles.
其他文献
Insect overwintering is one of the most astonishing phases of the insect life cycle.Despite vast amounts of knowledge available about the physiological mechanis
According to current theoretical predictions,any deleterious mutations that reduce nonsexual fitness may have a negative influence on mating success.This means
期刊
@@
本试验以黄金梨(Pyrus Pyrifolia. Nakai. cv. Whangkeumbae)和鸭梨(Pyrus bretschneider. Rehd. cv. Yali)为试材,对比研究了黄金梨和鸭梨叶片光合速率的日变化、季节变化及各种
辣椒种质资源研究对扩展辣椒基因库的遗传多样性、拓宽辣椒遗传基础,以及对辣椒种质材料的收集、鉴定、创新、合理利用等具有重要意义。   本研究结合形态学标记和分子标记
学位
23团靠科技酒花创高产农二师23团建筑公司抓科学管理,大胆改进承包办法,今年377亩啤酒花生产浓缩干酒花78174公斤,平均单产207.36公斤,比去年增产13330公斤,平均亩产比去年提高35公斤。该公司今年改变了承包