声明
Table of Contents
Abstract
摘要
List of Abbreviations
Chapter 1：Background and Literature Review
1．1 An overview
1．2 Plant Residue Decomposition
1．3 Factors affecting the decomposition of plant residue
1．3．1 Plant residue properties
1．3．2 Effect of environmental factors on the decomposition of plant residues
1．4 Dynamics of nutrients during the decomposition of plant residue
1．5 Emission of gas from soil
1．5．1 CO2 emission
1．5．2 CH4 emission
1．6 Objectives of the study
Chapter 2：Materials and Methods
2．1 Materials
2．1．1 Soil
2．1．2 Plant Residue
2．2 Methods
2．2．1 Soil analysis
2．2．2 Flooded water
2．2．3 Plant Residue
2．2．4 Analysis of gas fluxes
Chapter 3：Decomposition and nutrients release of the mixture of Chinese milk vetch and rice straw and their influences
3．1 Introduction
3．2 Matedais and Methods
3．2．1 Experimental design
3．2．2 Statistical analysis
3．3 Results
3．3．1 Decomposition rate and cumulative decomposition ratio of plant residues
3．3．2 Releases rate and cumulative release ratio of carbon from plant residues
3．3．3 Releases rate and cumulative release ratio of nitrogen from plant residues
3．3．4 Releases rate and cumulative release ratio of phosphorus from plant residues
3．3．5 Releases rate and cumulative release ratio of potassium from plant residues
3．4 Discussion
3．4．1 Decomposition rate and cumulative decomposition ratio of the mixture of Chinese milk vetch and rice straw and their influences
3．4．2 Nutrient release pattern during plant residue decomposition
3．5 Conclusion
Chapter 4：Effect of the mixture of Chinese milk vetch and rice straw and their influences on mineralization of nutrients during the decomposition period
4．1 Introduction
4．2 Materials and Methods
4．2．1 Experimental design
4．2．2 Statistical analysis
4．3 Results
4．3．2 The concentration of total carbon (TC) in soil
4．3．3 Concentration of nutrients in water at the end of incubation
4．4 Discussion
4．4．1 Dynamics mineralization of nutrients during the decomposition of crop residues in soft
4．4．2 Concentration of nutrients in water extracted from flooding soil at the end of incubation
4．5 Conclusion
Chapter 5：Effect of the mixture of Chinese milk vetch and rice straw and their influences on emissions of carbon dioxide CO2 and methane CH4 from soft during the decomposition period
5．1 Introduction
5．2 Materials and Methods
5．2．1 Experimental design
5．2．2 Statistical analysis
5．3．1 Emission and cumulative emission of CO2 from the soil
5．3．2 Emission and cumulative production of CH4 from the soil
5．4 Total Carbon (TC)，Total Nitrogen (TN) and Microbial Biomass Carbon (MBC) in the beginning and end of the experiment
5．5 Discussion
5．5．1 Emission and cumulative emission of CO2 from the soil
5．5．2 Emission and cumulative production of CH4 from the soil
5．5．3 Total carbon (TC)，Total nitrogen (TN) and Microbial Biomass Carbon (MBC) in the beginning and end of the experiment
5．6 Conclusion
Chapter 6：General discussion
6．1 Decomposition rate and release of nutrients from the mixture of Chinese milk vetch and rice straw and their influences
6．3 The emissions of carbon dioxide CO2 and methane CH4 from soil during the decomposition period of the mixture of Chinese milk vetch and rice straw and their influences
References
Acknowledgments
