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长期施肥条件下中国典型农田旱地土壤剖面活性有机碳库变化特征及其驱动因子

摘要第6-7页
ABSTRACT第7-8页
ABBREVIATION第11-12页
CHAPTER Ⅰ Introduction第12-22页
    1.1 Labile soil organic carbon第12-13页
    1.2 Soil labile organic carbon pools第13-15页
    1.3 Factor affecting on SOC labile pools第15-18页
        1.3.1 Effects of manure and fertilizer on soil organic carbon fractions第17-18页
    1.4 Methods to determine SOC and labile fraction第18-19页
    1.5 Long term experiments第19-20页
    1.6 Existing problems第20页
    1.7 Scientific questions第20页
    1.8 Hypotheses第20页
    1.9 Objectives第20-22页
CHAPTER Ⅱ Materials and Methods第22-31页
    2.1 Site characteristics第22-24页
    2.2 Fertilization第24-25页
    2.3 Soil sampling第25-27页
    2.4 Measurements第27-30页
        2.4.1 Analysis of SOC content第27页
        2.4.2 Analysis of labile SOC content第27-28页
        2.4.3 Analysis of SOC storage第28页
        2.4.4 Analysis of SMBC and SMBN第28-29页
        2.4.5 Neutral sugar analysis第29页
        2.4.6 Analysis of soil parameters第29-30页
    2.5 Statistical analyses第30-31页
CHAPTER Ⅲ Long-term Fertilization increased Soil Organic Carbon Storage and Labile Fraction in Upland Soils of China第31-56页
    3.1 Results第31-55页
        3.1.1 Soil bulk density第31-32页
        3.1.2 Influence of long-term fertilization on SOC storage第32-37页
        3.1.3 Influence of long-term fertilization on labile fraction of SOC storage第37-48页
        3.1.4 Comparison to Site第48页
        3.1.5 Proportion of labile fraction in SOC第48-50页
        3.1.6 Relationship of SOC and labile fraction with soil properties第50-51页
        3.1.7 Influence of long-term fertilization on neutral sugar第51-55页
    3.2 Chapter Summary第55-56页
CHAPTER Ⅳ The Proportional contribution of Driving factors on Labile SOC Fraction under Long-term fertilization in Upland Soils of China第56-61页
    4.1 Result第56-60页
        4.1.1 Contribution of driving factor in labile SOC fractions第56-60页
    4.2 Chapter Summary第60-61页
CHAPTER Ⅴ Discussion第61-67页
    5.1 Influence of long-term fertilization on SOC storage第61-62页
    5.2 Influence of long-term fertilization on labile SOC fraction第62-64页
    5.3 Contribution of driving factors in labile SOC fraction第64-67页
Conclusion第67-69页
    Research innovation第68页
    Future research prospects第68-69页
REFERENCES第69-80页
ACKNOWLEDGEMENT第80-81页
CURRICULUM VITAE第81-83页

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