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Research On Ecological Pattern Of Macrofungi In Shergyla Mountain In Xizang

Posted on:2012-09-07Degree:MasterType:Thesis
Country:ChinaCandidate:X J LiuFull Text:PDF
GTID:2120330338492826Subject:Ecology
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Shergyla Mountain, located in Linzhi County in Xizang, lies to the west of the Yarlung Zangbo River bend, a joint zone of eastern Nyenchen Tonglha Mountains and Himalayas Mountains. It is a mountain temperate humid and semi-humid climate zones. Influenced by the Indian Ocean warm air mass going through the Yarlung Zangbo River to upper reaches, this area enjoys superior natural conditions. The primeval forest here, a typical mountain area in southeastern Xizang temperate forest, breeds a wide variety of macrofungi resources, the temperate mountain forests in Southeast representation of the mountain.The present study, based on the different vegetation types and altitudes of Shergyla Mountain, samples 11 typical sections for the research bases to carry out the research by wild macrofungi specimen collections, biological ecological factors determinations and indoor microscopic examinations to reflect the ecological patterns of macrofungi in Shergyla Mountain.More than 1600 specimens were collected, and 316 species were identified. According to Dictionary of The Fungi (2008,10th ): 22 species, 14 genera, 10 families, 4 orders, 3 subclasses, 3 classes belong to Ascomycota; 294 species, 93 genera , 46 families, 14 orders, 3 subclasses,1 classes belong to Basidiomycota. In total, they can be categorized in terms of their economic use as follows: 202 edible mushrooms (63.92%), 92 medical funguses (29.11%), 72 poisonous mushrooms (22.78%), 52 wood-decaying fungi (16.46%) and 125 ectomycorrhizal fungi (39.56%).The statistics analysis showed that the advantage families (≧ 10 species) of macrofungi are Russulaceae, Agaricaceae, Tricholomataceae, Polyporaceae, Cortinariaceae, Strophariaceae, Boletaceae, Amanitaceae, Hygrophoraceae and Gomphaceae; the advantage genera (≧ 5 species) of macrofungi are Russula, Cortinarius, Amanita, Lactarius, Ramaria, Agaricus, Hygrophorus, Inocybe, Coprinus, Laccaria, Mycena, Clitocybe, Marasmius, Pholiota, Boletus, Helvella and Suillus.In terms of the color characteristics: 108 species are brown (34.18%), 83 species are yellow (26.27%) and 43 species are white (13.61%). Brown, yellow and red macrofungi are almost distributed in different sampling sites, vegetation types and months. Fewer colors (only 3) can be seen as the altitude rises; more colors appear in lower altitudes.In terms of distribution: Lulang area has the most species (103 species / 32.59%) while the 4197site of 318 national road has the fewest (13 species / 4.11%). Most macrofungi are distributed in Lulang may be because of relatively low altitude and relatively higher temperature; the contributing factor for the least distribution in 4197 site of 318 national road is probably because of the secondary forest in this area.In terms of vegetation types: 144 species of macrofungi in Shergyla Mountain are the most (45.57%) while 15 species (4.75%) can only be seen as the fewest in rhododendron shrub. The differences of the ecological factors like vegetation types and altitudes affect the ecological patterns of macrofungi.In terms of distribution periods: the most species of macrofungi can be found in watery September (141 species / 44.62%) while the fewest can be found in relatively dry May (39 species / 12.34%). The temperature, humidity and precipitation influence ecological patterns of macrofungi.By analyzing the common species, the more adjacent the altitudes are, the larger quantity of the macrofungi in the two area share; the nearer the month is, the larger quantity of the macrofungi in the two months share; Ecological patterns of macrofungi are closely related to the altitude , vegetation type, temperature and humidity.
Keywords/Search Tags:Shergyla Mountain, Macrofungi, Compositional Characteristic, Ecological Pattern
PDF Full Text Request
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