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Study on Community Characteristics of Secondary Pinus yunnanensis Forest in Southeast Tibet (PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年09期
Page:
74-77
Research Field:
Publishing date:

Info

Title:
Study on Community Characteristics of Secondary Pinus yunnanensis Forest in Southeast Tibet
Author(s):
WANG Wei; ZHANG Hong-feng; ZHANG Hua
College of Resources and Environment,Agricultural and Animal Husbandry College of Tibet University,Linzhi,Tibet 860000
Keywords:
secondary Pinus yunnanensis forest; slope facing; altitude; community characteristics
PACS:
S 718.54
DOI:
-
Abstract:
This study was to illustrate the distribution patterns of secondary Pinus yunnanensis forest,plant species,species important values and species diversity were analyzed based on an investigation of secondary Pinus yunnanensis forest in southeast Tibet.The results showed that the survey plots had high plant species richness,with 41 species belonging to 20 families and 32 genera.The species important value of Pinus yunnanensis in sunny slope was higher than on the shady slope in all altitude in our study,and increased with the altitude elevating.In shrub,the highest species important value was Berberis julianae Schneid at the altitude of 2 100 m and Desmodium elegans at the altitude of 2 300,2 500 m in sunny slope.Berberis julianae Schneid showed highest species important value at the altitude of 2 100 m and 2 300 m in shady slope,Lyonia ovalifolia took the first place when the altitude was 2 500 m.Pteridium aquilinum just below Pinus yunnanensis in all experiment altitude and slope,increased first and then decreased in sunny slope,but continuously reduced in shady slope with the altitude elevating.The species richness index in shady slope was higher than in sunny slope,the maximum species richness index was at the altitude of 2 300 m in shady,and decreased with the altitude elevating in sunny slope.The shannon index,pielou index and simpson index in shady slope was higher than in sunny slope,and decreased with the altitude elevating.

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Last Update: 2014-08-13