| Abstract | 第5-7页 |
| 摘要 | 第8-10页 |
| Table of content | 第10-12页 |
| Section 1:Introduction | 第12-21页 |
| 1.1 General introduction | 第12-14页 |
| 1.2 Background | 第14-19页 |
| 1.2.1 Grassland and insect diversity | 第14-16页 |
| 1.2.2 Grassland management and behavioral activity | 第16-18页 |
| 1.2.3 Grassland management and grasshopper microhabitat selection | 第18-19页 |
| 1.3 Justification | 第19-20页 |
| 1.4 Aims and scope of the study | 第20-21页 |
| Section 2:Materials and methods | 第21-29页 |
| 2.1 Study site | 第21-23页 |
| 2.2 Experimental site | 第23页 |
| 2.3 Study organism | 第23-24页 |
| 2.4 Experimental design and grazing treatments | 第24页 |
| 2.5 Insect sampling | 第24-25页 |
| 2.6 Behavioral observation | 第25-26页 |
| 2.7 Vegetation measurements | 第26页 |
| 2.8 Statistical procedures | 第26-29页 |
| Section 3:Results | 第29-54页 |
| 3.1 Vegetation characteristics | 第29-31页 |
| 3.1.1 Vegetation cover | 第29页 |
| 3.1.2 Vegetation height | 第29页 |
| 3.1.3 Aboveground biomass | 第29-31页 |
| 3.2 Effect of large herbivore grazing and plant diversity on insect diversity | 第31-32页 |
| 3.3 Effect of large herbivore grazing and plant diversity on Euchorthippus unicolor behavioral activity | 第32-39页 |
| 3.3.1 Number of plant species fed upon by grasshopper | 第32-36页 |
| 3.3.2 Behavioral activity | 第36-39页 |
| 3.4 Effect of large herbivore grazing and plant diversity on Euchorthippus unicolor microhabitat selection | 第39-49页 |
| 3.4.1 Plant species selection | 第39-41页 |
| 3.4.2 Heights of microhabitat | 第41-49页 |
| 3.5 Effect of large herbivore grazing and plant diversity on Euchorthippus unicolor foraging behavior | 第49-54页 |
| 3.5.1 Plant species selection | 第49-51页 |
| 3.5.2 Feeding heights | 第51-54页 |
| Section 4:Discussion | 第54-72页 |
| 4.1 Large herbivore grazing and plant diversity affect insect diversity | 第54-58页 |
| 4.1.1 Effect of grazing on insect diversity | 第54-56页 |
| 4.1.2 Effect of plant diversity on insect diversity | 第56-58页 |
| 4.2 Euchorthippus unicolor behavioral activity depends on large herbivore grazing and plant diversity | 第58-61页 |
| 4.2.1 Effect of grazing on behavioral activity | 第58-59页 |
| 4.2.2 Effect of plant diversity on behavioral activity | 第59-61页 |
| 4.3 Large herbivore grazing and plant diversity affect Euchorthippus unicolor foraging behavior | 第61-63页 |
| 4.3.1 Effect of grazing on feeding height | 第61-62页 |
| 4.3.2 Effect of plant diversity on feeding height | 第62-63页 |
| 4.4 Large herbivore grazing and plant diversity determine the pattern of Euchorthippus unicolor microhabitat selection | 第63-72页 |
| 4.4.1 Plant species selection | 第63-65页 |
| 4.4.2 Heights of microhabitat | 第65-72页 |
| Section 5:General conclusion | 第72-75页 |
| 5.1 Main conclusions | 第72-73页 |
| 5.2 Suggestions for furher research and management implications | 第73-75页 |
| Supplementary information | 第75-76页 |
| References | 第76-93页 |
| Acknowledgments | 第93-94页 |
| List of publicatioas | 第94页 |
