碩士 / 國立宜蘭大學 / 自然資源學系碩士班 / 98 / Abstract
A survey on the wood-inhabiting fungi on thinning tree trunks of the Experimental Forest of National Ilan University was conducted from March 2008 to February 2009. Sample discs from piled trunks were collected twice per season and eight times in the period of one year. Trunks of Taiwan Acacia (Acacia confusa), Comphor Tree (Cinnamommum camphora) and Turn-in-the-wind (Mallotus paniculatus) were stacked in three locations, the specimen garden, the , Taiwan Incense-cedar and the Formosan sweet gum stands as specimens for fungal isolation sampling. Environment factors, such as temperature and humidity of air and soil, and the fruiting bodies presented on the trunks were collected and recorded.
Isolation and identification of fungi from the sample discs reveal 6 basidiomycetes and 1 ascomycetes and 44 deuteromycetes in the first year of piling. Six basidiomycetous fruiting bodies of Auricularia auricular-judae, Auricularia polytrich, Coprinus disseminatus, Schizophyllum commune, Polyporus tenuiculu, and one with resupinate fruiting body alone with two other ascomyces , Biscogniauxia sp. and Xylaria sp. were collected from the piled trunks.
The total fungi species isolated and recognized from this study were 12 basidiomyces, 3 ascomyces, and 44 deuteromyces. Among these fungi, species of Botryosphaeria, Fusarium, Penicillium, Phaeoacremonium, and Trichoderma genera were most frequently encountered ones. Four suspected newly recorded species of Taiwan, Campylocarpon fasciculare, Pleurostoma ootheca, Phaeoacremonium inflatipes, Phaeoacremonium rubrigenum were isolated and identified.
Differences of species and their isolation frequency among the three tree species and piling location were found, of which the Turn-in-the-wind and the specimen garden showed highest fungal species number and isolation frequency. When comparing the fungal isolation frequency from between heartwood and softwood of a tree species, the sapwood possesses higher isolation frequency than the heartwood.
Soil humidity and canopy coverage were the only environmental factors indicated obvious differences among the three piling locations which may be taken as the influence factors on the presents of fungal species and their isolation frequencies. Besides the environmental factors, differences occur with varied piled tree species and between heartwood and softwood obviously rendered the varied species appearance and their isolation frequencies.
Host specificity was noticed by the 7 unique species isolated from the specimens of Taiwan Acacia and the 4 and 6 unique species from the specimens of Comphor Tree and Turn-in-the-wind separately. Fungi with generality were also observed by the 9 fungal species occurred on all the tree species piled.
Keywords：Experimental Forest of National Ilan University、wood-inhabiting fungi、thinning tree trunks
| Identifer | oai:union.ndltd.org:TW/098NIU07148001 |
| Date | January 2010 |
| Creators | Shih-Han Tseng, 曾詩涵 |
| Contributors | Ya-Lih Lin, 林亞立 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 96 |
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