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Sources and Composition of Organic Carbon in Tropical River Systems:Case Studies from India and China

摘要第7-11页
Abstract第11-15页
Abbreviations of analytical terms第16-21页
Chapter Ⅰ:Introduction第21-38页
    1.1 Scientific background第21-22页
    1.2 Carbon cycling under changing global conditions第22-25页
        1.2.1 Factors influencing the composition of terrestrial OM第23-25页
    1.3 The conundrum of OC characteristics in tropical river systems第25-28页
        1.3.1 Information gap第27-28页
    1.4 River systems of peninsular India and Hainan Island第28-33页
        1.4.1 Tropical (peninsular) India第28-31页
        1.4.2 Tropical Hainan Island, China第31页
        1.4.3 Previous studies on rivers of tropical India and China第31-33页
    1.5 Approach, hypothesis and objectives第33-38页
Chapter Ⅱ:Materials and methods第38-63页
    2.1 Description of the study area第38-51页
        2.1.1 West coast of India (WCI)第39-44页
            2.1.1.1 Geology of WCI river basins第40-41页
            2.1.1.2 Geomorphology, precipitation and fluvial load第41-43页
            2.1.1.3 Land use pattern along WCI第43-44页
        2.1.2 Zuari river system第44-45页
            2.1.2.1 Geology of ZRS第45页
            2.1.2.2 Land use pattern over ZRS第45页
        2.1.3 Godavari river system第45-48页
            2.1.3.1 Geology of Godavari river basin第47页
            2.1.3.2 Geomorphology, precipitation and fluvial load第47-48页
            2.1.3.3 Land use pattern over Godavari basin第48页
        2.1.4 Nandujiang/Nandu River (Hainan, China)第48-51页
            2.1.4.1 Geomorphology, precipitation and fluvial load第50页
            2.1.4.2 Land use pattern over NDR第50-51页
    2.2 Sample collection and pre-treatment第51-54页
        2.2.1 Plants and soil samples第51-53页
        2.2.2 Water samples and bottom sediments第53-54页
        2.2.3 Sample pre-treatments and in situ measurements第54页
    2.3 Analytical methods第54-61页
        2.3.1 Grain size analysis第54-55页
        2.3.2 Bulk chemical analysis (elementary contents, isotopes)第55-56页
        2.3.3 Instrument calibration第56-58页
            (ⅰ) CHNOS analyzer第56页
            (ⅱ) Finnigan EA 1112-Delta plus XP IRMS第56-58页
        2.3.4 Lignin phenols analysis第58页
        2.3.5 Instrument calibration第58-61页
    2.4 Data processing and statistics第61-63页
        2.4.1 Multivariate statistical analysis第61页
        2.4.2 Principal component analysis (PCA)第61-62页
        2.4.3 Cluster Analysis第62-63页
Chapter Ⅲ:Organic matter characterization in relation to the land use change across the estuaries of west coast of India between 12°N and 24°N-Implication through elemental, isotopic and biomarker constrains of sediments第63-90页
    3.1 Introduction第63-65页
    3.2 Research methods第65-68页
        3.2.1 Characteristics of river systems across WCI第65-66页
        3.2.2 Sampling and analysis第66-67页
        3.2.3 Data treatment第67-68页
    3.3 Results第68-79页
        3.3.1 Elemental and isotopic properties第68-71页
        3.3.2 Lignin phenol yield and compositional ratios第71-75页
        3.3.3 Principal Component Analysis (PCA)第75-76页
        3.3.4 Quantification of sedimentary OMsources in WCI estuaries第76-78页
        3.3.5 Land use change and sedimentary OC第78-79页
    3.4 Discussion第79-88页
        3.4.1 Composition and origin of OM in WCI estuaries第79-84页
        3.4.2 Land use change and terrigenous OM composition第84-86页
        3.4.3 Impact on coastal and marine system of Arabian Sea第86-88页
    3.5 Summary第88-90页
Chapter Ⅳ:Characteristics of plants and soil organic matter along the Western Ghats, India第90-108页
    4.1 Introduction第90-92页
    4.2 Sampling and chemical analysis第92页
    4.3 Results and Discussion第92-107页
        4.3.1 Bulk properties第92-96页
        4.3.2 Lignin phenols and ratios第96-104页
        4.3.3 Fates and implications第104-107页
    4.4 Summary第107-108页
Chapter V :Factors controlling the spatial and seasonal distribution of organic matter alongthe dispersal pathway ofZuari river system— implication through multivariatestatistics第108-131页
    5.1 Introduction第108-109页
    5.2 Sampling and analysis第109-110页
    5.3 Results第110-123页
        5.3.1 Physicochemical properties第110-114页
        5.3.2 Bulk concentrations, elemental and isotopic ratios第114-116页
        5.3.3 Lignin phenols composition第116-118页
        5.3.4 Multivariate statistical results第118-121页
        5.3.5 Quantification of OMproportion第121-123页
    5.4 Discussion第123-129页
        5.4.1 Biogeochemistry of OM in ZRS第124-127页
        5.4.2 Potential contribution of OM sources in ZRS第127-128页
        5.4.3 Factors influencing the OM biogeochemistry in ZRS第128-129页
    5.5 Summary第129-131页
Chapter Ⅳ:Spatial variability of organic matter composition in largest peninsular river system, Godavari (India)-Influence of damming and precipitation variability第131-155页
    6.1 Introduction第131-132页
    6.2 Sampling and data collection第132页
    6.3 Results第132-143页
        6.3.1 Variability of SWM and Sediment load in Godavari River第132-135页
        6.3.2 Bulk properties (OC, TN, C/N,δ~(13)C and grain size)第135-137页
        6.3.3 Lignin phenols and indices第137-142页
        6.3.4 Statistical results第142-143页
    6.4 Discussion第143-154页
        6.4.1 OM composition and source in the Godavari river basin第143-147页
        6.4.2 OM sources in Godavari River第147-150页
        6.4.3 OC flux from the Godavari River第150-154页
    6.5 Summary第154-155页
Chapter Ⅶ:Temporal variability of organic matter composition in Nandujiang (Nandu River)-Influence of extreme precipitation event第155-185页
    7.1 Introduction第155-156页
    7.2 Sampling and analysis第156-157页
    7.3 Results第157-176页
        7.3.1 Climatic and hydrologic conditions in Nandu River第157-159页
        7.3.2 Hydrographic characteristics第159-162页
        7.3.3 Bulk concentrations, elemental and isotopic ratios第162-166页
        7.3.4 Lignin phenols composition第166-174页
        7.3.5 Principal component analyses (PCA)第174-176页
    7.4 Discussion第176-183页
        7.4.1 Biogeochemistry of POM transported by NDR第177-179页
        7.4.2 Nature and provenance of POM in NDR第179-182页
        7.4.3 Factors affecting OM composition in NDR第182-183页
    7.5 Summary第183-185页
Chapter Ⅷ:Conclusions and Directions for Future Research第185-205页
    8.1 General Conclusions第185-186页
    8.2 Chapter wise conclusions第186-190页
    8.3 Global significance and synthesis第190-200页
    8.4 Conceptual Model第200-203页
    8.5 Uncertainty and limitations第203-204页
    8.6 Future directions第204-205页
References第205-235页
Appendix第235-237页
攻读博士学細间发表的论文第237-238页
参加学术会议第238-239页
Acknowledgements第239页

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