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Analysis and Evaluation on Ecological Environmental Effects of Main Models of Forest Ecological Net System in Jiaonan City

Author: WangGuiXia
Tutor: LiChuanRong；XuJingWei
School: Shandong Agricultural University
Course: Soil and Water Conservation and Desertification Combating
Keywords: Coastal forest Forest ecological network system Configuration Mode Environmental Effects Evaluation
CLC: S718.5
Type: Master's thesis
Year: 2005
Downloads: 131
Quote: 0
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Abstract


In this study, forest ecological network system according Jiaonan shrub grass strips - backbone forest - hilly soil and water conservation forest - economic forest - farmland shelterbelts gradient zone from the coast to inland development, on which the main mode of eco-environmental effects were analyzed and evaluated . GIS application of advanced technology, information access and field survey to take a combination of methods to investigate Jiaonan pattern of forest ecological network system and the main mode of spatial configuration structure; Applications Typical sampling method, the main mode of diversity to investigate the situation; using conventional Methods of Soil Improvement main mode, water conservation effect and improve the microclimate effects were investigated and analyzed; in meadow as the control, the application of AHP model for the major integrated ecological environmental effects were evaluated. The results showed that: the spatial configuration of the main mode relatively simple structure. Amorpha herbaceous shrub grass strips in spatial structure model is a better model; backbone Chunlin locust forest in the spatial structure of the best; pure forest soil and water conservation forest of pine horizontal structure better than pine oak forest, while no difference between the two vertical structure. The main mode of low diversity, Simpson index and Shannon-wiener index ranged from 0.13 to 1.64 and from 0.15 to 3.39. From the coast to inland along different gradient zone, diversity situation becomes better. Tamarisk shrub-grass band pattern better than Amorpha herb herbaceous diversity in the mode condition; backbone locust loblolly pine forest in the diversity of ash mixed better than the pine forest and the locust Chunlin mode; hilly forest of Soil and Water Conservation better than the black pine Pinus thunbergii Chunlin Quercus mixed forest. The main modes are improved soil physical properties and nutrient status, and soil physical properties and nutrient status along with the development from the coast to inland gradually changed for the better. Shrub and grass with Amorpha herbaceous model soil improvement effect is greater than tamarisk herbaceous model, its capillary porosity than tamarisk herbal Mode High 39.22%; backbone forest in locust Chunlin for soil improvement effect of the largest of its capillary porosity of the total porosity ratio is 81.49%, pure forest and lodgepole pine locust loblolly pine ash mixed, followed by pine Chunlin minimum; hilly forest soil and water conservation Chunlin and lodgepole pine oak mixed two models in terms of soil improvement effect The latter showed better than the former, non-pine mixed Quercus

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CLC: > Agricultural Sciences > Forestry > Forestry basic science > Forest Biology > Forest Ecology
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