【文章頁數(shù)】：216 頁

【學(xué)位級別】：博士

【文章目錄】：
Abstract
List of Publications
Acknowledgements
Table of Contents
List of Tables
List of Figures
Abbreviations and definitions of some terms
Chapter 1. Introduction
    1.1. Introduction and purpose of the present study
    1.2. Stable isotopes in dissolved nitrate
        1.2.1 N isotopic composition
        1.2.2 O isotopic composition
    1.3. δ¹⁵N values of Nitrate sources
        1.3.1. Atmospheric deposition
        1.3.2. N-bearing fertilizers
        1.3.3. Sewage and manure
        1.3.4. Soil organic N
        1.3.5. Nitrate sources in fresh water
    1.4.8 δ¹⁸O values of Nitrate sources
        1.4.1. Atmopheric nitrate deposition
        1.4.2. Synthetic fertilizer
        1.4.3. Nitrification of N-bearing organic matters
    1.5. Factors affecting N and O isotopic compositions
        1.5.1. Mixing
        1.5.2. Amonification
        1.5.3. Ammonia volatilization
        1.5.4. Assimilation
        1.5.5. Nitrification
        1.5.6. Denitrification
    1.6. Identifying nitrate sources by using ducal isotope methods and waterchemistry
    References
Chapter 2. Methodologies
    2.1. Sampling
        2.1.1. Description of the sampling area
        2.1.2. Surface water sampling
        2.1.3. Local nitrate sources sampling
    2.2. Exploration of the experimental methods in determining N and O isotopicratios
    2.3. Sampling preparation and analytical procedure
        2.3.1. Sampling preparation for the determination of δ¹⁵N and δ¹⁸O-NO3
-values
        2.3.2. Chemical analysis major anions
        2.3.3. Chemical analysis of N isotopic compositions
        2.3.4. Chemical analysis of O isotopic compositions
    References
Chapter 3. Researches in Taihu Lake
    3.1. Study on Taihu Lake during December.2007
        3.1.1. Concentrations of major anions
        3.1.2. NO3
-/Cl^- concentration ratio variation
        3.1.3. δ¹⁵N value in Nitrate
        3.1.4. δ¹⁸O value in Nitrate
        3.1.5. δ¹⁵N and δ¹⁸O values in Nitrate
        3.1.6. Summary
    3.2. Study on Taihu Lake during January and July of 2009
        3.2.1. Spatial distribution,temporal variations of major anion concentrations
        3.2.2. Spatial distribution, temporal variations of δ¹⁵N-NO3
- values
        3.2.3. Spatial distribution, temporal variations of δ¹⁸O-NO3
- values
        3.2.4 Using δ¹⁵N and δ¹⁸O-NO3
- values to assess the nitrate source and denitrification
        3.2.5. Summary
    3.3. Comparison between chapter 3.1 and chapter 3.2
    References
Chapter 4. Researches in Chaohu Lake
    4.1. Spatial distribution, temporal variations of major anions
    4.2. Spatial distribution, temporal variations of δ¹⁵N-NO3
- values
    4.3. Spatial distribution, temporal variations of δ¹⁸O-NO3
- values
    4.4. Using δ¹⁵N and δ¹⁸O-NO3
- values to assess the nitrate source anddenitrification
    4.5. Summay
    References
Chapter 5. The comparison between Taihu Lake and Chaohu Lake
Chapter 6. Summary and Prospects in future
    6.1. Summary
    6.2. Combining other isotopic tools to identify nitrate sources
        6.2.1. Isotopic ratios of plants
        6.2.2 Water isotopic ratios
        6.2.3. Boron isotopic ratios
        6.2.4. Strontium isotopic ratios
        6.2.5. Lithium isotopic ratios
        6.2.6. O isotopic ratios of phosphate
    References
Chapter 7. Conclusions
中文論文濃縮版
    第一章 研究目的和研究的同位素方法的介紹
    第二章 實驗方法的介紹
    第三章 結(jié)果和討論
    第四章 結(jié)論
    參考文獻(xiàn)



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