紫云英与稻草混合物的矿化动态及对土壤养分和温室气体排放的影响
发布时间：2020-12-12 16:24
植物残体中营养物质的释放对农业系统的可持续性至关重要,可为微生物和植物提供碳和营养物质。植物残体的持续矿化是土壤中植物有效养分的主要来源。向土壤中添加植物残体也会影响碳循环及其储存,从而增加温室气体（CO2和CH4）的排放,加剧全球变暖。植物残体的类型、其养分的初始含量、混合比、掺入时间、土壤水的可用性和温度,调控养分的释放和植物残体的矿化。土壤的化学和物理特性也可能影响植物残体养分的释放和矿化模式以及土壤中温室气体的排放。为了解养分如何从植物残体中释放,其在土壤中矿化的动态,对碳循环的影响以及土壤中温室气体的排放,在两种不同的土壤（红壤性水稻土和潮土）中进行持续180天的三个腐解实验。选取两种植物残体:1)紫云英（Astragalus sinicus L.）,2)稻草（Oryza sativa L.）。植物残体的混合比例为紫云英:稻草100%:0;75%:25%;50%:50%;25%:75%和0:100%,对应的试验处理为M100,M75S25,M50...
【文章来源】：华中农业大学湖北省 211工程院校 教育部直属院校
【文章页数】：96 页
【学位级别】：硕士
【文章目录】：
Abstract
摘要
List of Abbreviations
Chapter1: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
2 emission"> 1.5.1 CO2 emission
4 emission"> 1.5.2 CH4 emission
1.6 Objectives of the study
Chapter2: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
Chapter3:Decomposition and nutrients release of the mixture of Chinese milk vetch and ricestraw and their influences
3.1 Introduction
3.2 Materials 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 Chinesemilk vetch and rice straw and their influences
3.4.2 Nutrient release pattern during plant residue decomposition
3.5 Conclusion
Chapter4:Effect of the mixture of Chinese milk vetch and rice straw and their influences onmineralization 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
4.3.1 Mineralization of nutrients during the decomposition period
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 insoil
4.4.2 Concentration of nutrients in water extracted from flooding soil at the end ofincubation
4.5 Conclusion
Chapter5:Effect of the mixture of Chinese milk vetch and rice straw and their influences onemissions of carbon dioxide CO2 and methane CH4 from soil during the decomposition period
5.1 Introduction
5.2 Materials and Methods
5.2.1 Experimental design
5.2.2 Statistical analysis
5.3 Result
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 thebeginning 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）inthe beginning and end of the experiment
5.6 Conclusion
Chapter6: General discussion
6.1 Decomposition rate and release of nutrients from the mixture of Chinese milk vetch andrice straw and their influences
6.2 Dynamics mineralization of nutrients during the decomposition of the mixture ofChinese milk vetch and rice straw and their influences in soil
6.3 The emissions of carbon dioxide CO2 and methane CH4 from soil during thedecomposition period of the mixture of Chinese milk vetch and rice straw and their influences
References
Acknowledgements
【参考文献】：
期刊论文
[1]环境因素对干旱半干旱区凋落物分解的影响研究进展[J]. 王新源,赵学勇,李玉霖,连杰,曲浩,岳祥飞. 应用生态学报. 2013(11)
[2]Present Situation and Benefit Analysis of the Straw Recycling in Southwest China[J]. GAO Xue-song1,2,ZENG Min1,2,DENG Liang-ji1,2*,ZHONG Chang-biao3 1.Resources and Environment Institute,Sichuan Agricultural University,Yaan 625014,China;2.Key Laboratory of Land Information in Sichuan Province,Yaan 625014,China;3.Faculty of Business,Ningbo University,Ningbo 315211,China. Asian Agricultural Research. 2010(02)
本文编号：2912904
【文章来源】：华中农业大学湖北省 211工程院校 教育部直属院校
【文章页数】：96 页
【学位级别】：硕士
【文章目录】：
Abstract
摘要
List of Abbreviations
Chapter1: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
2 emission"> 1.5.1 CO2 emission
4 emission"> 1.5.2 CH4 emission
1.6 Objectives of the study
Chapter2: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
Chapter3:Decomposition and nutrients release of the mixture of Chinese milk vetch and ricestraw and their influences
3.1 Introduction
3.2 Materials 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 Chinesemilk vetch and rice straw and their influences
3.4.2 Nutrient release pattern during plant residue decomposition
3.5 Conclusion
Chapter4:Effect of the mixture of Chinese milk vetch and rice straw and their influences onmineralization 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
4.3.1 Mineralization of nutrients during the decomposition period
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 insoil
4.4.2 Concentration of nutrients in water extracted from flooding soil at the end ofincubation
4.5 Conclusion
Chapter5:Effect of the mixture of Chinese milk vetch and rice straw and their influences onemissions of carbon dioxide CO2 and methane CH4 from soil during the decomposition period
5.1 Introduction
5.2 Materials and Methods
5.2.1 Experimental design
5.2.2 Statistical analysis
5.3 Result
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 thebeginning 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）inthe beginning and end of the experiment
5.6 Conclusion
Chapter6: General discussion
6.1 Decomposition rate and release of nutrients from the mixture of Chinese milk vetch andrice straw and their influences
6.2 Dynamics mineralization of nutrients during the decomposition of the mixture ofChinese milk vetch and rice straw and their influences in soil
6.3 The emissions of carbon dioxide CO2 and methane CH4 from soil during thedecomposition period of the mixture of Chinese milk vetch and rice straw and their influences
References
Acknowledgements
【参考文献】：
期刊论文
[1]环境因素对干旱半干旱区凋落物分解的影响研究进展[J]. 王新源,赵学勇,李玉霖,连杰,曲浩,岳祥飞. 应用生态学报. 2013(11)
[2]Present Situation and Benefit Analysis of the Straw Recycling in Southwest China[J]. GAO Xue-song1,2,ZENG Min1,2,DENG Liang-ji1,2*,ZHONG Chang-biao3 1.Resources and Environment Institute,Sichuan Agricultural University,Yaan 625014,China;2.Key Laboratory of Land Information in Sichuan Province,Yaan 625014,China;3.Faculty of Business,Ningbo University,Ningbo 315211,China. Asian Agricultural Research. 2010(02)
本文编号：2912904
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