| Abstract | 第5-6页 |
| Table of contents | 第7-8页 |
| 1. Introduction | 第8-14页 |
| 1.1 Background of the research | 第8页 |
| 1.2 Factors which influence foraging behavior of large herbivore | 第8-9页 |
| 1.3 The foraging mechanism of large herbivore | 第9-10页 |
| 1.4 Plant spatial neighboring relationship and their effects on large herbivore foraging | 第10-11页 |
| 1.5 Plants associational defense hypothesis | 第11-12页 |
| 1.6 The objective and significance of this study | 第12-14页 |
| 2. Materials and Methods | 第14-17页 |
| 2.1 Study site | 第14页 |
| 2.2 Plants species and experimental animals | 第14页 |
| 2.3 Treatment design | 第14-15页 |
| 2.4 Experimental procedure and measurement | 第15-16页 |
| 2.5 Data analysis | 第16-17页 |
| 3. Results | 第17-22页 |
| 3.1 Focal plant and neighboring plant consumption | 第17-18页 |
| 3.2 Food intake of sheep within patches | 第18-20页 |
| 3.3 Selectivity index for the focal plant in relation to its neighboring plants | 第20页 |
| 3.4 Grazing time of the sheep | 第20-22页 |
| 4. Discussion | 第22-24页 |
| 4.1 The effects of neighboring plant abundance on focal plant consumption | 第22-23页 |
| 4.2 The foraging mechanism of large herbivore which results in plants associational defense | 第23页 |
| 4.3 Conclusions | 第23-24页 |
| References | 第24-28页 |
| Acknowledgements | 第28页 |
