| Abstract | 第1-10页 |
| 摘要 | 第10-13页 |
| Abbreviation | 第13-14页 |
| 1. Introduction | 第14-24页 |
| ·Literature Review | 第14-18页 |
| ·P export in agricultural catchments | 第14-15页 |
| ·P dynamics in sediments | 第15-18页 |
| ·Background,hypothesises and objectives of the thesis | 第18-24页 |
| ·Project background introduction | 第18-20页 |
| ·Hypothesis 1 | 第20-21页 |
| ·Hypothesis 2 | 第21-22页 |
| ·Hypothesis 3 | 第22页 |
| ·Hypothesis 4 | 第22-24页 |
| 2. Effects of snowmelt on phosphorus and sediment losses from agricultural catchmentsin Eastern Canada | 第24-44页 |
| ·Introduction | 第24-26页 |
| ·Methods and materials | 第26-31页 |
| ·Catchments description | 第26-28页 |
| ·Hydrological processes simulation in BHW and BBW | 第28-29页 |
| ·Frozen soil maps | 第29页 |
| ·Soil temperature measurements | 第29-30页 |
| ·Water sampling and analysis | 第30-31页 |
| ·Results and discussions | 第31-41页 |
| ·Hydrology modelling and winter conditions | 第31-34页 |
| ·Soil frozen status and soil temperature | 第34-37页 |
| ·Suspended sediments and P transport in two catchments | 第37-41页 |
| ·Conclusions | 第41-44页 |
| 3. The fate of phosphorus in suspended and streambed sediments of two livestockintensive catchments | 第44-64页 |
| ·Introduction | 第44-45页 |
| ·Material and methods | 第45-51页 |
| ·The study catchments | 第45-48页 |
| ·Sampling | 第48-50页 |
| ·Sediment analysis | 第50-51页 |
| ·Statistical analysis | 第51-52页 |
| ·Suspended sediments | 第51页 |
| ·Streambed sediments | 第51页 |
| ·Stepwise regression | 第51-52页 |
| ·Results and discussions | 第52-62页 |
| ·Inter-catchment variations in suspended and streambed sediments P characteristics | 第52-56页 |
| ·Within intervention catchment variations in suspended and streambed sediments P characteristics | 第56-60页 |
| ·Possible factors contributing to spatial variations in P characteristics in suspended and streambed sediments | 第60-62页 |
| ·Conclusions | 第62-64页 |
| 4. The exploration on groundwater discharge impact on phosphorus at the interface ofstream water and streambed sediments in an agricultural catchment | 第64-77页 |
| ·Introduction | 第64-65页 |
| ·Materials and Methods | 第65-69页 |
| ·The study sites | 第65-66页 |
| ·Sampling | 第66-68页 |
| ·Water analysis | 第68页 |
| ·Sediment analysis | 第68页 |
| ·Statistics | 第68-69页 |
| ·Results and discussions | 第69-76页 |
| ·Characteristics of pipe water and seepage water | 第69-75页 |
| ·Implications of pipe and seepage meter experiments | 第75-76页 |
| ·Conclusions | 第76-77页 |
| 5. Phosphorus characteristics in the bottom sediments of three wet ponds constructed inan agricultural catchment of Nicolet | 第77-88页 |
| ·Introduction | 第77-78页 |
| ·Methods and materials | 第78-81页 |
| ·The study sites | 第78-80页 |
| ·Sampling | 第80页 |
| ·Sample analyses | 第80-81页 |
| ·Statistical analyses | 第81页 |
| ·Results and discussions | 第81-86页 |
| ·Properties of the bottom sediments in the constructed wet ponds | 第81-83页 |
| ·P characteristics of the bottom sediments in the constructed wet ponds | 第83-86页 |
| ·Conclusions | 第86-88页 |
| 6. Conclusions | 第88-92页 |
| ·Main conclusions | 第88-90页 |
| ·Research highlights | 第90页 |
| ·Limits and future research needs | 第90-92页 |
| References | 第92-99页 |
| Acknowledgements | 第99-101页 |
| Publications and Conference Presentations | 第101页 |
