昆虫学报2013，Vol.56Issue(2)：173-185,13.
浙江天目山种植林管理历史及粗死木残体特征影响柳杉腐木甲虫多样性
Plantation management history and coarse woody debris characteristics influence the diversity of saproxylic beetles associated with Chinese cedar in Tianmushan, Zhejiang, East China
摘要
Abstract
Unreasonable forest management has been proposed as an important causation for the decline of saproxylic beetle diversity.In subtropical regions of China,plantation forests have been widely established to replace natural forests with high diversity.However,our knowledge about the impact of these plantation forests on saproxylic beetle diversity is still very poor.In this study,we compared the composition and diversity of saproxylic beetle assemblages associated with snags of Chinese cedar (Cryptomeria fortunei) in young cedar plantation (YPF) (30-40 year),mature cedar plantation (MPF) (80-100 year),and semi-natural mixed forests (SNMF) (＞ 200 year) in Tianmushan Nature Reserve,Zhejiang province.The results showed that the number of saproxylic beetle individuals was significantly higher in SNMF (97.4 + 66.7) (mean + SD) than in YPF (39.9 + 16.3) and MPF (21.9± 5.9).However,no significant difference in species richness was found between SNMF (27.9 + 11.2)and YPF (24.1 + 3.7).In contrast,the numbers of species and individuals were significantly higher in YPF than in MPF (P ＜ 0.05).Both species richness and abundance were significantly related to the volume of coarse woody debris (CWD) in surveyed plots (P ＜ 0.05).The canonical correspondence analysis and multi-response permutation procedure analysis confirmed that the saproxylic beetle assemblages were significantly different between forest types (P ＜ 0.001).The diameter of sampled snags,CWD diameter and amount,and canopy cover in plots had significant effects on species composition (P ＜ 0.05).Analysis of trophic composition also indicated that mycetophagous species were significantly more abundant in SNMF than in plantation forests (P ＜ 0.001).The results suggest that improving quantity and quality of CWD habitats in cedar plantations may increase species richness of saproxylic beetles,but the diversity of saproxylic beetles in these plantations may decline in later succession stage.Furthermore,saproxylic beetle assemblages in cedar plantations may remain distinct from those in natural forests.关键词
腐木甲虫/物种多样性/柳杉/管理历史/种植林/粗死木残体/天目山Key words
Saproxylic beetles/species diversity/Chinese cedar/management history/plantation forest/coarse woody debris/Tianmushan分类
生物科学引用本文复制引用
吴捷,潘卉,杨淑贞,牛晓玲..浙江天目山种植林管理历史及粗死木残体特征影响柳杉腐木甲虫多样性[J].昆虫学报,2013,56(2):173-185,13.基金项目
国家自然科学基金项目(30900212) （30900212）
