论文目录 | |
| Abstract | 第1-10页 |
| 摘要 | 第10-13页 |
| Abbreviation | 第13-14页 |
| 1. Introduction | 第14-24页 |
| 1.1. Literature Review | 第14-18页 |
| 1.1.1. P export in agricultural catchments | 第14-15页 |
| 1.1.2. P dynamics in sediments | 第15-18页 |
| 1.2. Background,hypothesises and objectives of the thesis | 第18-24页 |
| 1.2.1. Project background introduction | 第18-20页 |
| 1.2.2. Hypothesis 1 | 第20-21页 |
| 1.2.3. Hypothesis 2 | 第21-22页 |
| 1.2.4. Hypothesis 3 | 第22页 |
| 1.2.5. Hypothesis 4 | 第22-24页 |
| 2. Effects of snowmelt on phosphorus and sediment losses from agricultural catchmentsin Eastern Canada | 第24-44页 |
| 2.1. Introduction | 第24-26页 |
| 2.2. Methods and materials | 第26-31页 |
| 2.2.1. Catchments description | 第26-28页 |
| 2.2.2. Hydrological processes simulation in BHW and BBW | 第28-29页 |
| 2.2.3. Frozen soil maps | 第29页 |
| 2.2.4. Soil temperature measurements | 第29-30页 |
| 2.2.5. Water sampling and analysis | 第30-31页 |
| 2.3. Results and discussions | 第31-41页 |
| 2.3.1. Hydrology modelling and winter conditions | 第31-34页 |
| 2.3.2. Soil frozen status and soil temperature | 第34-37页 |
| 2.3.3. Suspended sediments and P transport in two catchments | 第37-41页 |
| 2.4. Conclusions | 第41-44页 |
| 3. The fate of phosphorus in suspended and streambed sediments of two livestockintensive catchments | 第44-64页 |
| 3.1. Introduction | 第44-45页 |
| 3.2. Material and methods | 第45-51页 |
| 3.2.1. The study catchments | 第45-48页 |
| 3.2.2. Sampling | 第48-50页 |
| 3.2.3. Sediment analysis | 第50-51页 |
| 3.3. Statistical analysis | 第51-52页 |
| 3.3.1. Suspended sediments | 第51页 |
| 3.3.2. Streambed sediments | 第51页 |
| 3.3.3. Stepwise regression | 第51-52页 |
| 3.4. Results and discussions | 第52-62页 |
| 3.4.1. Inter-catchment variations in suspended and streambed sediments P characteristics | 第52-56页 |
| 3.4.2. Within intervention catchment variations in suspended and streambed sediments P characteristics | 第56-60页 |
| 3.4.3. Possible factors contributing to spatial variations in P characteristics in suspended and streambed sediments | 第60-62页 |
| 3.5. 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 |
| 4.1. Introduction | 第64-65页 |
| 4.2. Materials and Methods | 第65-69页 |
| 4.2.1. The study sites | 第65-66页 |
| 4.2.2. Sampling | 第66-68页 |
| 4.2.3. Water analysis | 第68页 |
| 4.2.4. Sediment analysis | 第68页 |
| 4.2.5. Statistics | 第68-69页 |
| 4.3. Results and discussions | 第69-76页 |
| 4.3.1. Characteristics of pipe water and seepage water | 第69-75页 |
| 4.3.2. Implications of pipe and seepage meter experiments | 第75-76页 |
| 4.4. 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 |
| 5.1. Introduction | 第77-78页 |
| 5.2. Methods and materials | 第78-81页 |
| 5.2.1. The study sites | 第78-80页 |
| 5.2.2. Sampling | 第80页 |
| 5.2.3. Sample analyses | 第80-81页 |
| 5.2.4. Statistical analyses | 第81页 |
| 5.3. Results and discussions | 第81-86页 |
| 5.3.1. Properties of the bottom sediments in the constructed wet ponds | 第81-83页 |
| 5.3.2. P characteristics of the bottom sediments in the constructed wet ponds | 第83-86页 |
| 5.4. Conclusions | 第86-88页 |
| 6. Conclusions | 第88-92页 |
| 6.1. Main conclusions | 第88-90页 |
| 6.2. Research highlights | 第90页 |
| 6.3. 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 |
