华北平原集约农田管理措施下土壤碳库动态变化

发布时间：2025-07-02 04:38

　　随着世界人口的迅速增长,人们对粮食的需求量日益增加,集约化农业是从有限的上地资源中获得更高粮食产量必不可少的措施。目前,设施蔬菜生产在我国已经得到广泛应用,并且其产量在中国市场的比重日益增加,已经远远超出世界其他国家。小麦玉米轮作系统对于保证充足的粮食供应也至关重要。在集约化生产模式下,农业种植管理方式对土壤碳循环具有重要影响。因此,评估这些系统对土壤碳固持的潜力是很有必要的,这不仅有利于减少温室气体的排放,同时也有利于增加这些系统的可持续。上壤碳由有机碳和无机碳两部分组成。目前对于土壤有机碳循环的研究较多,但很少有人重视这些系统中土壤无机碳的循环过程。本研究在寿光和曲周选择了两个设施蔬菜生产体系,此外还对露地小麦玉米系统进行了评估。寿光设施蔬菜生产系统主要研究两种灌溉方式以及二三种有机肥的施用方式,曲周设施蔬菜生产采用传统的有机肥和化肥结合施用方式,并且选取一块自然未耕作土地作为空白对照。露地冬小麦一夏玉米生产系统也采用类似的施肥方式。研究测定了200 cm土层处土壤有机碳和无机碳的含量,同时还分析了不同粒径土壤组分中有机碳的循环过程,用以评估不同形态有机碳的稳定性。为了更详细的评价这...

【文章页数】：123 页

【学位级别】：博士

【文章目录】：
ABSTRACT
中文摘要
General Introduction
CHAPTER Ⅰ Literature Review
    Ⅰ-1- The Global Warming
    Ⅰ-2- Soil Organic Carbon Dynamics in Agricultural Soils
    Ⅰ-3- Soil Inorganic Carbon Dynamics in Agricultural soils
    Ⅰ-4- Intensive agriculture in China
    Conclusions
CHAPTER Ⅱ Background and Objectives
    Ⅱ-1- Background
    Ⅱ-2- Objectives of the present investigation and experimental set-up
CHAPTER Ⅲ Impact of Different Types of Irrigation and OrganicAmendments on Organic Carbon in Soil Profile and Physical Fractions underGreenhouse Vegetable Production
    Abstract
    Ⅲ-1- Introduction
    Ⅲ-2- Material and methods
    Ⅲ-3- Results
    Ⅲ-4- Discussion
    Ⅲ-5- Conclusions
CHAPTER Ⅳ Impact of Varying Types of Irrigation and OrganicAmendments on Soil Inorganic Carbon under Greenhouse VegetableProduction
    Abstract
    Ⅳ-1- Introduction
    Ⅳ-2- Materials and methods
    Ⅳ-3- Results
    Ⅳ-4- Discusssion
    Ⅳ-5- Conclusions
CHAPTER Ⅴ Impact of Organic, Integrated and Conventional Fertilization onOrganic Carbon in Soil Profile and Physical Fractions under GreenhouseVegetable Production
    Abstract
    Ⅴ-1- Introduction
    Ⅴ-2- Material and methods
    Ⅴ-3- Results
    Ⅴ-4- Discussion
    Ⅴ-5- Conclusions
CHAPTER-Ⅵ Impact of Organic, Integrated and Conventional Fertilizationon Soil Inorganic Carbon under Greenhouse Vegetable Production
    Abstract
    Ⅵ-1- Introduction
    Ⅵ-2- Material and methods
    Ⅵ-3- Results
    Ⅵ-4- Discussion
    Ⅵ-5- Conclusion
CHAPTER-Ⅶ Neo formation of Pedogenic Carbonates by Irrigation andFertilization and Their Contribution to Carbon Sequestration in Soil
    ABSTRACT
    Ⅶ-1- Introduction
    Ⅶ-2- Materials and methods
    Ⅶ-3- Results
    Ⅶ-4- Discussion
    Ⅶ-5- Conclusions
Chapter Ⅷ General Discussion
    Ⅷ-1- Impacts of farming practices on soil organic carbon
    Ⅷ-2- Impacts of farming practices on soil inorganic carbon
Conclusions and Perspectives
REFERENCES
Acknowledgements
DEDICATION
CURRICULUM VITAE



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