| ABSTRACT | 第1-7页 |
| Table of Contents | 第7-9页 |
| Chapter one Introduction | 第9-12页 |
| Chapter two Literature review | 第12-16页 |
| ·Soil erosion | 第12页 |
| ·Factors causing soil erosion | 第12页 |
| ·Climate | 第12-13页 |
| ·Soil | 第13-14页 |
| ·The influence of topography | 第14页 |
| ·The effect of vegetation cover | 第14-16页 |
| Chapter three Materials and methods | 第16-21页 |
| ·Experimental Site | 第16-17页 |
| ·Plot characteristics, experimental measurements and designs | 第17-20页 |
| ·Statistical analysis | 第20-21页 |
| Chapter four Results | 第21-36页 |
| ·The effect of integrated strip grasses on runoff and sediment yields | 第21-23页 |
| ·The relationship between runoff and sediment loss with time | 第23-25页 |
| ·Contributions of canopy and plots without canopy in the reductions of runoff and sediment yields | 第25-28页 |
| ·Nitrogen and Organic matter loss | 第28-30页 |
| ·Enrichment ratio of organic matter and nitrogen | 第30-32页 |
| ·Soil particle distribution in the eroded sediment | 第32-36页 |
| Chapter Five Discussion | 第36-42页 |
| ·Runoff and sediment loss | 第36-37页 |
| ·Soil particle distribution in sediment loss | 第37页 |
| ·The relationship between runoff and sediment loss with time | 第37-38页 |
| ·The effect of canopies and vegetation without canopy | 第38-39页 |
| ·The impact of vegetation cover on Nitrogen and Organic matter loss | 第39-40页 |
| ·Nitrate and Ammonium loss in the runoff water | 第40页 |
| ·Enrichment ratio | 第40-42页 |
| Chapter six Conclusion | 第42-44页 |
| REFFERENCES | 第44-47页 |
| Tables and Figures | 第47-48页 |
| Acknowledgements | 第48页 |
