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Land Degradation Assessment in Tibetan Plateau, China: A GIS & RS Approach

中文摘要第4-6页
Abstract第6-7页
Table of Contents第8-11页
List of Tables & Figures第11-13页
List of Abbreviations第13-15页
Chapter 1 Introduction第15-19页
    1.1 Background to the Study第15-16页
    1.2 The study area第16-17页
    1.3 Justification for the Study第17页
    1.4 Aim第17-18页
    1.5 Definition of Terms第18-19页
Chapter 2 Land Cover/Use Change and Desertification第19-29页
    2.1 Definition of desertification第19页
    2.2 Land use/cover changes第19-20页
    2.3 The causes of desertification第20-21页
    2.4 United action第21页
    2.5 Where does desertification occur?第21-23页
        2.5.1 Surface area of the world's drylands第21-22页
        2.5.2 Characteristics of the drylands第22-23页
            2.5.2.1 Drought and Aridity第22-23页
        2.5.3 Different categories of drylands第23页
    2.6 How does desertification occur?第23-25页
        2.6.1 Over-exploitation of natural resources第23-24页
        2.6.2 Deforestation and energy第24-25页
        2.6.3 Population growth第25页
    2.7 Climate change and desertification第25-29页
        2.7.1 The evolution of climate第25页
        2.7.2 The greenhouse Gas(GHG):第25-26页
        2.7.3 The influence of man on climate change第26-27页
        2.7.4 The consequences of global warming in the drylands第27-29页
Chapter 3 RS and GIS第29-37页
    3.1 Remote sensing RS and GIS第29-30页
    3.2 Interaction of electromagnetic radiation with matter第30-37页
        3.2.1 Earth surface interactions第30-37页
            3.2.1.1 Soil第32-33页
            3.2.1.2 Water,snow,ice第33-34页
            3.2.1.3 Reflectance behavior of vegetation第34-37页
                3.2.1.3.1 Interaction that directly affects leaf-mass/EMRfunction第35-37页
Chapter 4 Interactions between climate and desertification第37-49页
    4.1 Introduction第37-38页
    4.2 Problem of desertification and agriculture related issues第38页
    4.3 Effect of desertification on climate第38-45页
        4.3.1 Changes in land cover and land use leading to land degradation第39-40页
            4.3.1.1 Land cover changes第39页
            4.3.1.2 Land use changes第39-40页
        4.3.2 Climatic consequences associated with land use/cover changes第40页
        4.3.3 Overgrazing第40-41页
        4.3.4 Biomass burning and atmospheric emissions第41页
        4.3.5 Agriculture's contribution to air pollution第41-42页
        4.3.6 Forest and woodland clearing and accelerated erosion第42-43页
        4.3.7 Anthropogenic land disturbances and wind erosion第43-44页
        4.3.8 Impact of irrigated agriculture on surface conditions in dry lands第44-45页
    4.4 Impact of dryland climates on soils and vegetation with specific reference to desertification第45-49页
        4.4.1 Impacts on vegetation第45页
        4.4.2 Impacts on soils第45-46页
        4.4.3 Climate change and desertification第46-49页
Chapter 5 LANDSAT images processing第49-59页
    5.1 LANDSAT satellite第49-51页
    5.2 The Images of study area第51页
    5.3 Software第51页
    5.4 Image preprocessing第51-54页
        5.4.1 Projection and register第51-52页
        5.4.2 Image registration第52页
        5.4.3 Convert Tiff to Img images第52页
        5.4.4 Band Combination第52-54页
    5.5 Image processing第54-56页
        5.5.1 Enhancement第54-55页
            5.5.1.1.Radiometrie Enhancement第54-55页
        5.5.2 Extract water(model maker)第55页
        5.5.3 Image Classification第55-56页
            5.5.3.1 Supervised vs.Unsupervised Classification第55-56页
    5.6 Clump and Elimination第56-57页
    5.7 Recording第57页
    5.8 Mosaic of the classified images第57-59页
Chapter 6 The status of land degradation in the study area第59-73页
    6.1 Overview第59-61页
    6.2 Data and methods第61-62页
    6.3 Eco-environmental changes第62-67页
        6.3.1 Vegetation degradation第62-64页
        6.3.2 Land desertification第64-65页
        6.3.3 Other eco-environmental changes第65-67页
    6.4 Causative analysis of eco-environmental changes第67-73页
        6.4.1 Climate change第67-68页
        6.4.2 Overgrazing and rodent damage第68-71页
            6.4.2.1 Increase in livestock and meat production第68-71页
            6.4.2.2 Relationship between climate change and livestock change第71页
        6.4.3 Frozen soil degradation and its influence第71-72页
        6.4.4 Natural environment factors第72-73页
Chapter 7 Laboratory work(data processing)第73-87页
    7.1 Calculation第73-87页
        7.1.1.Calculating the area of each class over entire study area第73-84页
        7.1.2 Calculation based on the status of each pixel第84-86页
        7.1.3 Results第86-87页
Chapter 8 Conclusions and Recommendations第87-93页
    8.1 Conclusions第87-91页
    8.2 Recommendations第91-92页
        8.2.1 Priorities areas to combat desertification in Tibetan Plateau第91页
        8.2.2 Emergency action areas to combat desertification第91-92页
        8.2.3 Action Programmes to Combat Soil Salinization第92页
    8.3 General objectives to combat desertification as international concern第92-93页
Acknowledgements第93-95页
Reference第95-97页

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