首页--农业科学论文--农业基础科学论文--土壤学论文--土壤化学、土壤物理化学论文--土壤成分论文

A METHOD FOR DEVELOPING SOIL ORGANIC MATTER DYNAMICS MONITORING MODEL FOR CULTIVATED SOIL SYSTEMS

Dedication第3-4页
Declaration第4-5页
Certification第5-6页
Acknowledgement第6-8页
Table of Contents第8-11页
List of Tables第11-16页
List of Figures第16-17页
Abbreviations第17-18页
Summary第18页
CHAPTER ONE第20-26页
    1. Introduction第20-26页
CHAPTER TWO第26-44页
    2.0 Review of literature第26页
    2.1 Soil organic matter composition and age in cultivated soils第26-28页
    2.2 Theoretical concepts for decomposition and stability of added substrates第28-31页
    2.3 Development, description and utility of models of SOM dynamics第31-34页
    2.4 Influence of management factors on SOM dynamics第34-42页
        2.4.1 Tillage System (TS)第34-37页
        2.4.2 Fertilizer System (FS)第37-39页
        2.4.3 Added Organic Matter (ADOM) System第39-40页
        2.4.4 Rotation System (RS)第40-42页
    2.5 Cultivation Duration第42-43页
    2.6 Mechanisms for depletion or accumulation of SOM with cultivation第43-44页
CHAPTER THREE第44-60页
    3.0 Model fundamental basis第44页
    3.1 Theory of decomposition of heterogeneous substrates第44-45页
    3.2 Decomposition theory according to the method of Jenny (1941)第45页
    3.3 Decomposition theory according to the method of Hunt (1977)第45-46页
    3.4 Decomposition theory according to Bosatta and Agren (1985)第46-47页
    3.5 Derivation of explicit expressions第47-54页
        3.5.1 Decay rate change第51-52页
        3.5.2 Residue weight loss trends第52-54页
    3.6 Model configuration第54-60页
        3.6.1 Management and abiotic factors第54-56页
        3.6.2 Model for decomposition of p1ant residues第56-58页
        3.6.3 Proposed integrated model configuration for SMBC dynamics第58-60页
CHAPTER FOUR第60-69页
    4.0 Materials and methods第60页
    4.1 Reconstitution of mathematical models and expressions第60-61页
        4.1.1 Substrate utilization rate and substrate use efficiency第60-61页
        4.1.2 Substrate specific decomposition rate第61页
        4.1.3 Remnant residue estimation第61页
    4.2 Generation of data for testing the suggested theories第61-65页
        4.2.1 Simulated decomposition in the greenhouse第62-65页
            4.2.1.1 Soils preparation第62-63页
            4.2.1.2 Plant residue preparation第63页
            4.2.1.3 Experimental design第63-64页
            4.2.1.4 Laboratory analysis第64页
            4.2.1.5 Calculations第64-65页
    4.3 Parameter estimations第65页
        4.3.1 Weight loss relative to time第65页
    4.4 Predicted residue decomposition rates第65-67页
        4.4.1 Optimum values第66-67页
    4.4.2 Factor interaction第67-68页
        4.4.2.1 Minimum multip1icative interaction第67页
        4.4.2.2 Multiplicative interaction第67页
        4.4.2.3 Additive multiplicative interaction第67-68页
    4.4.3 Soil microbial biomass carbon count and residue trends第68-69页
        4.4.3.1 Statistical analysis第68-69页
CHAPTER FIVE第69-116页
    5.0 Results and Discussion第69页
    5.1 Simulated decomposition in the greenhouse第69-89页
        5.1.1 Temperature第70-71页
        5.1.2 Residue weight loss trends第71-89页
            5.1.2.1 Effect of residue placement第78-83页
            5.1.2.2 Effect of mineral N第83-86页
            5.1.2.3 Effect of Tillage第86-89页
    5.1.3 Soil microbial biomass carbon第89-103页
        5.1.3.1 Effect of residue placement第92-94页
        5.1.3.2 Effect of mineral N第94-99页
        5.1.3.3 Effect of Tillage第99-103页
    5.2 Model第103-111页
        5.2.1 Model parameters第103-106页
        5.2.2 Model prediction第106-111页
            5.2.2.1 Residue weight loss第106-108页
            5.2.2.2 Soil microbial biomass carbon第108-111页
    5.3 General Discussion第111-114页
    5.4 Conclusions第114-115页
    5.5 Recommendations第115-116页
CHAPTER SIX第116-169页
    6.1 Bibliography第116-136页
    6.2 Appendix第136-169页

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