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Study on the Quantitative Ecology of Quercus Liaotungensis Koidz in the South of Shanxi

Author: QiaoKe
Tutor: BiRunCheng
School: Shanxi Normal University
Course: Ecology
Keywords: Southern Shanxi Quercus Communities Interspecific association Niche Species diversity
CLC: Q948
Type: Master's thesis
Year: 2010
Downloads: 68
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Abstract

Shanxi temperate deciduous forest in the southern area to constructive species Quercus forest types in the forest is widely distributed in the local soil improvement, water conservation, water conservation, safeguarding regional ecological balance, improve environmental quality and the conservation of biological diversity plays an important role. In order to strengthen the protection of vegetation in the region, the paper Luliangshan foothill and the Quercus Taiyueshan community as the research object, the application of quantitative ecology methods, scientific analysis of community species composition and species diversity, community dominant species relationship between species and niche expounded oak communities in southern Shanxi ecological relationships. The survey found there are 50 families communities and 139 plant species, of which Rosaceae species up to 21 species, accounting for 15.1% of the total number of species, followed by Compositae 15 species, accounting for 10.8% of plant species, honeysuckle Branch, birch, Liliaceae species 8,6,6, respectively, accounting for the total number of species were 5.76%, 4.32%, 4.32%, and the remaining subjects, respectively, the number of species ranging from 1 to 5 kinds. Four local species diversity study selection Patriek, Margalef richness index, Pieluo evenness index, Shannon-Wiener, Simpson and Andrew Hill multi-index, respectively, from the species richness, evenness and species diversity commence analysis The results show that, compared with the uniformity, southern Shanxi four local community richness Quercus significant impact on the community's comprehensive diversity index. Meanwhile, the use of PCORD5.0 software 98 quadrats of TWINSPAN eventually merge them into nine community types are summarized. These nine species diversity of community types that nine community types of species diversity indices were significantly different, through correlation analysis, found that nine communities Quercus species group significantly affected the number of layers of diverse shrubs grass index. By species diversity index and correlation analysis of various environmental factors that affect the elevation gradient in southern Shanxi Quercus species diversity patterns decisive factor, but other environmental factors on the southern Shanxi Quercus species diversity changes must also affect , but not statistically significant. Using χ2 test, Pearson correlation analysis and Spearman's rank correlation analysis of three kinds of analysis to study the southern Shanxi relationship between Quercus species were measured in the community of 44 dominant species of interspecific association and correlation. The results showed that the two species in the community on the environment have similar differences reflect greater probability appear together, but mostly positive correlation; while Habits different species, appear together in a low probability, but more a negative correlation. Generally speaking, communities tree layer, shrub layer and herb layer three dominant species in the negative logarithm of the relevant species are very significant positive correlation between species than logarithmic, which explains the entire southern Shanxi Liaodong oak communities basically in a relatively stable stage of development, communities competition between the species greatly weakened the relationship among species is relatively loose. Communities on the southern Shanxi Quercus shrubs grass three dominant species in niche breadth was measured using a Levins (1968) index and information index (Shaanon-Wiener). Analysis of the results showed that communities of species niche breadth greater ability to adapt to the environment for the survival of the stronger, the greater the effect on the community. Gradients through environmental factors on niche analysis, show that Quercus at higher altitude, soil nitrogen, less moisture areas, niche breadth bigger. Using Levins (1968) overlap index on the southern Shanxi grass bushes and oak communities in the three dominant species were measured, the results showed niche overlap and niche breadth were to some extent reflects the characteristics of their own species and environmental adaptability, a certain degree of contact between the two. Also showed interspecific association and niche overlap exists greater relevance.

Study on the Quantitative Ecology of Quercus Liaotungensis Koidz in the South of Shanxi

Abstract

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