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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2010 Vol.29 No.3

Damage of Callosciurus erythraeus in Planted Forests
Author of the article:YIN San-jun1, WEN Zhi-xin1, RAN Jiang-hong1*, TANG Kai-cheng2
Author's Workplace:(1.College of Life Sciences, Sichuan University, Chengdu 610064, China; 2. Forestry Centre of Hongya County, Hongya, Sichuan Province 620364, China)
Key Words: Callosciurus erythraeus; planted forest; damage; Hongya County
Abstract:From March 2008 to March 2009, damage inflicted on Crypotomeria fortunei and Cunninghami lanceolata by Callosciurus erythraeus was observed monthly in 15 fixed sample plots in Hongya County, Sichuan Province. Our results showed: 1) February to July was the main period of damage, among which the most serious damage occurred in March and April. Crypotomeria fortunei showed a higher annual average rate of damaged trees than Cunninghami lanceolata, but the difference of the annual average degree of damage between them was not significant. 2) Different aged forests showed diversity in damage. Middle aged forests had significantly higher monthly average rates of damaged trees than mature forests and young forests (P<0.05); Young forests had a higher monthly average damage degree than middle aged forests, and middle aged forests had a higher monthly average damage degree than mature forests. The difference between the three was significant (P<0.05). 3) Damage mainly occurred in the upper and middle part of trees. The location of the damage was different in forests of different ages. The ratio of damage locations in mature forests and middle aged forests was upper > middle > lower, whereas in young forests the proportion was middle > upper > lower. 4) Bark-stripping types mainly consisted of bark that included phellem, cork cambium and secondary phloem, as well as few external periderm. Bark-stripping of external periderm occurred in February – April and July – November.
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