| 来源类型 | Conference or Workshop Item (Poster) |
| 规范类型 | 其他 |
| Implications of changes in tropical shifting cultivation intensification on land productivity and GHG-related biogeochemistry. | |
| Bustier B; Ngoy A; Pietsch S; Mosnier A | |
| 发表日期 | 2017 |
| 出处 | European Geosciences Union (EGU) General Assembly 2017, 23–28 April 2017, Vienna, Austria |
| 出版年 | 2017 |
| 语种 | 英语 |
| 摘要 | Traditional shifting cultivation used to be a sustainable type of land use for the subsistence of populations in tropical rainforests. The vast resource of moist tropical forests together with low population densities allowed for long fallow periods on sparsely distributed slash and burn parcels with large areas of untouched forest in between. Population growth and concomitant increase in land demand for subsistence as well as increasing infrastructure development for commercial forestry, cash crops and mining, however, altered the picture over recent decades. As a result, fallow periods were reduced due to lack of pristine land. In this study we use field data and modelling results from the Congo Basin to assess the impacts of reduced fallow periods on Carbon sequestration dynamics using a BGC model calibrated and validated with > 150 research plots distributed over the western Congo Basin and representing different management and land use histories. We find that the average carbon sequestration rate reduces over the number of cultivation cycles and that a reduction of the fallow from 10 years to 7 years reduce the average carbon sequestration between 13 and 21% and from 7 years to 4 years between 23 and 29% depending on soil fertility. |
| 主题 | Ecosystems Services and Management (ESM) |
| URL | http://pure.iiasa.ac.at/id/eprint/14573/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/132790 |
| 推荐引用方式 GB/T 7714 | Bustier B,Ngoy A,Pietsch S,et al. Implications of changes in tropical shifting cultivation intensification on land productivity and GHG-related biogeochemistry.. 2017. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| EGU_Poster1.pptx（844KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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