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Chongqing Mountain Horticultural Ecosystem Nitrogen And Phosphorus Cycles And Eco-flow Of Landscape Analysis

Posted on:2012-10-16Degree:MasterType:Thesis
Country:ChinaCandidate:K YangFull Text:PDF
GTID:2143330335955928Subject:Botany
Abstract/Summary:PDF Full Text Request
Chongqing landscape with mountains and hills mainly suitable for a variety of plant growth, development of mountain eco-agriculture and feasibility of its full advantage. And because of the terrain and some man-made, serious soil erosion, in this context in-depth study of ecological gardening mountain of nitrogen and phosphorus flow has an important ecological theory and practice.Based on the mountainous landscape ecological gardening nitrogen and phosphorus analysis of the ecological movement, exploring the establishment of an eco-garden on the landscape of mountain farmers agro-ecosystems. This ecosystem not only protect the ecological environment, maintain the sustainable use of resources and the environment, and also promote sustainable development of agriculture.Select the Three Gorges Reservoir Area and Ecological Agriculture Corridor Southwest University, Beibei District, Chongqing, horticulture demonstration base of South Mountain as the study area in the study area field survey the current situation. Analysis the ecological flow, the ecosystem of the material cycle, ecology and other aspects of suitability, and ecological gardening mountain watershed landscape of ecological flow and landscape structure optimization. Main contents and results are as follows:First of all, the town of Fuling, We investigated and analysised the ecological homes of in Chongqing Nantuo Three Gorges Migrants. Study the area's natural, economic, and demographic factors, and analysis of the ecological flow in the study area.It can be concluded that ecological flows from top to bottom in the mountain agriculture ecosystems through determined the contents of nitrogen and phosphorus in five typical agro-ecosystems soil. Citrus and mustard of nitrogen cropping pattern 74.2% interception rate of the highest in five cropping patterns, grass minimum. Mustard cropping pattern to intercept the highest rate of phosphorus,85.4%. On the whole, excluding subject to certain factors (fertilization), agricultural cropping patterns compound of nitrogen and phosphorus in the interception rate than a single species of high agricultural cropping patterns.Exclude of some certain factors, agricultural cropping patterns compound of nitrogen, the nitrogen and phosphorus interception rate of agricultural cropping patterns compound of nitrogen phosphorus is higher than a single species.Second, gardening demonstrations in the southern mountain base, the habitat characteristics, including topography, slope, hydrology analysis; in the town of Fuling, Chongqing Three Gorges migrants Nantuo ecological investigation based on the home, based on the farmers to build a modern, ecological, landscape Science-based ecological base of the mountain landscape gardening.Through the study of the terrain, slope, hydrologic analysis and ecological flow analysis for planning study area, the results show that soil erosion before planning modulus 14.3t/hm·a, planning of the soil erosion modulus 13.6t/hm·a.After the soil erosion plan has significantly reduced.Three Gorges Reservoir Area of special geographical conditions, gardening, flowers, animal husbandry, sericulture and other characteristics of different types of households for the individual component units, constitute the harmonization of the various disciplines Demonstration base teaching practice.Optimize landscape structure mainly from the water, energy, soil pollution, ecological management and other aspects of the study area. Within the study area include the collection and application of rainwater, water saving irrigation system exclusive, comprehensive application of solar energy and biogas, soil-point source pollution, ecological management and so on. Principles of landscape ecology as a theoretical guide, combined with mountain ecological gardening nitrogen, phosphorus and other eco-flow analysis, build a scientific, rational, beautiful landscape plants, landscape planning facilities for the construction of mountain ecosystems provide a theoretical basis for landscape gardening.
Keywords/Search Tags:Mountain Agriculture, Ecological Agriculture, Ecological flow, Landscape Structure
PDF Full Text Request
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