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Study on Ecological Restoration of Mashan Eastern Mountain in Wuxi City

Author: ZhuXiaoYong
Tutor: HuHaiBo
School: Nanjing Forestry University
Course: Soil and Water Conservation and Desertification Combating
Keywords: Ecological restoration Vegetation characteristics Soil properties Drought resistance Wuxi
CLC: X171.4
Type: Master's thesis
Year: 2005
Downloads: 208
Quote: 3
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Abstract


Ecological restoration is to restore degraded ecosystems, improve the ecological environment as an essential measure. Select a different paper Levels Wuxi Ma Shandong Ecological Restoration Measures (unrepaired, extensive governance, strengthen governance, Hillside and Management) ecosystem for the study, comparing the characteristics of ecosystem vegetation and soil drought resistance traits and differences between different plants, different ecological study restoration measures on plant communities and soil characteristics influence the relationship between plant communities and soil, and plant ecological adaptability to drought stress. The results showed that: (1) Never repair plant communities (control) to extensive governance (measures Ⅰ), strengthening governance (measures Ⅱ) and ban management (measures Ⅲ) plant communities, plant growth situation becomes better, floristic composition and plant growth gradually, community becomes larger vegetation cover, species richness, diversity and evenness also increases. Plant species richness, diversity and evenness along the vertical structure of tree, shrub and grass direction generally increasing trend. Show reasonable ecological restoration can promote revegetation. (2) each tree and shrub layers of plant community species richness with diversity index and evenness index has an associated consistency. Herbaceous layer is formed by human disturbance, and its growth trend in stochastic and more uniform coverage, richness, diversity and evenness index changes are quite different. In different growing seasons, the implementation of ecological restoration measures in different variations are quite different plant species, plant communities of species similarity level in descending order are: unrepaired gt; extensive governance gt; strengthening governance gt; enclosure management. (3) the main physical and chemical indicators of soil analysis, we know that the ecological restoration measures are to varying degrees, soil properties, and more to the surface soil, the better for soil improvement. Among the indexes were significant correlations, indicating that the soil factors are interrelated and jointly on vegetation restoration work. (4) community characteristics and soil properties have a certain relevance. Vegetation restoration and soil improvement is a two-way interactive relationship. When the soil physical and chemical properties meet certain conditions, in order to settle the vegetation, growth and even form a perfect community structure. Accordingly, when a certain vegetation is established, can improve soil physical properties and soil nutrient fixation, conversion, storage, have a positive significance to improve the overall quality of the soil. (5) using the coordinate comprehensive assessment method and the method of fuzzy mathematics comprehensive assessment of the membership function of each plant drought resistance, drought resistance seen buergerianum best, Pittosporum, yellow Vitex better, Pyracantha, camphor poor, Tallow is the worst.

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CLC: > Environmental science, safety science > The basic theory for the Environment and Science > Environmental Biology > Ecosystems and pollution ecology > Ecological construction and ecological restoration
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