| ABBREVIATION | 第7-8页 |
| ABSTRACT | 第8-9页 |
| 摘要 | 第10-11页 |
| Chapter 1: Literature review | 第11-15页 |
| 1.1 The importances of biochars in agriculture and climate change | 第11-12页 |
| 1.2 The stability and decomposition of biochar in various | 第12页 |
| 1.3 The mineralization of LOM in biochar amended soil | 第12-13页 |
| 1.4 Different function of fresh and aged biochars in soil | 第13-14页 |
| 1.5 Objectives and hypothesis | 第14-15页 |
| Chapter 2: Materials and methods | 第15-20页 |
| 2.1 Soil sampling and preparation | 第15-16页 |
| 2.2 Experimental design and treatments | 第16页 |
| 2.3 Incubation and sampling | 第16-17页 |
| 2.4 Microbial biomass and DOC measurement | 第17页 |
| 2.5 Enzyme assays | 第17-18页 |
| 2.6 Chemical and isotopic analyses | 第18-19页 |
| 2.7 Calculations and statistical analysis | 第19-20页 |
| Chapter 3: The effects of aged and fresh biochars on glucose-induced priming and microbialactivities in paddy soil | 第20-33页 |
| 3.1 Soil CO_2 efflux | 第20-23页 |
| 3.2 Glucose decomposition | 第23-26页 |
| 3.3 Microbial biomass and DOC | 第26-30页 |
| 3.4 Enzyme activity (V_(max)) | 第30-31页 |
| 3.5 PEs | 第31-33页 |
| Chapter 4: Discussion | 第33-41页 |
| 4.1 Effect of BC addition on the total CO_2 efflux | 第33页 |
| 4.2 Effect of BC addition on glucose mineralization | 第33-35页 |
| 4.3 Effects of BC addition on microbial biomass | 第35页 |
| 4.4 Effects of BC addition on enzyme activities | 第35-37页 |
| 4.5 Effects of BC addition on PEs | 第37-39页 |
| 4.6 Effects of water regime on the total CO_2 efflux and PE | 第39-41页 |
| Chapter 5: Conclusions | 第41-42页 |
| References | 第42-47页 |
| ACKNOWLEDGEMENTS | 第47-48页 |
| CURRICULUM VITAE | 第48-50页 |
