Carbon sequestration resulting from management of fires on the Tiwi Islands Progress Report December 2015

[摘要] This report presents a summary of progress during June to December 2015 towards the goals of a project to develop methodologies for carbon sequestration in biomass fuels, soils and vegetation resulting from management of fires in the high rainfall savanna of the Tiwi Islands. It addresses milestone 11 which requires updates the project plan on the deliverables for each key process. Specifically the following items are addressed as required: (1) description of annual workshop with Tiwi Land Council and Tiwi Land Rangers; (2) updates to project plan; (3) Soil carbon sequestration – analysis of field data and further refinement of century model; (4) vegetation carbon sequestration – collection and analysis of field data and early draft of scientific paper; (5) Early draft of carbon sequestration methodology that includes fine fuel, soil carbon and vegetation carbon stock.At the annual workshop held in December 2015, various issues were raised about the assumptions in the emissions abatement methodology regarding the seasonality of fire behaviour. Also the effect of the development of land for agriculture within a project area was identified as an uncertainty.The analysis of oil carbon samples from the Tiwi fire experiment and elsewhere in northern Australia is nearly completed. Modelling using both RothC and Century will make use of vegetation data and dead organic matter dynamics models from this project.Studies of vegetation dynamics are progressing and an approach to integrate vegetation structure data with the dead organic matter dynamics models has been developed.The algorithms to model dead organic matter dynamics have been revised following discovery of a logic error, and have been compared with a computational approach. We are now confident in the robustness of the dead organic matter models.Future work is briefly described.

[发布日期] 2015-12-20 [发布机构] CSIRO

[学科分类] 地球科学(综合)