声明
摘要
ABSTRACT
Contents
Chapter Ⅰ：Introduction and study background
1．Introduction
1．2．Objectives of the study
1．3 Measuring heterogeneity
1．4．Responses of different taxa to landscape structure
Chapter Ⅱ：Study design and major findings
2．Material and methods
2．1 Study region
2．2．Study site selection
2．3．Establishment of transects
2．4．Insect group selection and sampling
2．5．Insect identification
2．6．Local scale environmental data
2．7．Landscape-scale environmental data
2．8．Statistical analysis
Chapter 3：Results
3．1．Site characteristics
3．2．Insect data
3．3．Model results
Chapter 4．Discussion
4．1．Crop diversity promotes the diversity of decomposing and pest controlling insects
4．2．Field margins promote diversity of flower visiting insects
4．3．Combination of different crop types promote overall insect diversity
4．4 Conclusion and management implications
References
Appendices
Acknowledgements
Papers published during degree study
