...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Lakes & Reservoirs >Spatio-temporal variation of gross CO_2 and CH_4 diffusive emissions from Australian reservoirs and natural aquatic ecosystems, and estimation of net reservoir emissions
【24h】

Spatio-temporal variation of gross CO_2 and CH_4 diffusive emissions from Australian reservoirs and natural aquatic ecosystems, and estimation of net reservoir emissions

机译：来自澳大利亚水库和自然水生生态系统的CO_2和CH_4扩散总排放的时空变化以及水库净排放的估算

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Carbon dioxide (CO_2) and methane (CH_4) diffusive emissions were measured during two field surveys in Queensland and Tasmania, Australia, using the floating chamber method. Bubbling and degassing emissions in 2010 were estimated in Koombooloomba Dam reservoir using only inverted funnels and gas concentrations, respectively. A total of 14 reservoirs and 16 rivers and lakes were sampled from 2006 to 2010. Spatial variation was substantial within each water body, as well as between them. The main drivers of diffusive emission variation were physiographic region and climate, with a clear demarcation being observed between diffusive emissions from tropical Queensland and temperate Tasmania, and between the humid West Coast Range (Tasmania) and dry Central Plateau (Tasmania). Higher CO_2 and CH_4 diffusive emissions were observed during the dry season, when long water residence times would promote organic matter degradation. Estimated total gross emissions, including diffusive, bubbling and degassing emissions, for Koombooloomba Dam reservoir were about 1.5 × 10~6 t CO_2eq km~2 per year, or 24 × 10~6 t CO_2eq per year. This corresponds to a plant emission factor of 3.18 kg CO_2eq MWh~(-1). Using an estimate of terrestrial emissions derived from literature data for the Tully River catchment area, rough estimated net emissions from the catchment area are about 44 kt CO_2eq per year, or 5.83 kg CO_2eq MWh~(-1), which is in the lower range of the studied reservoirs.
机译：在澳大利亚昆士兰州和塔斯马尼亚州的两次野外调查中，使用浮室法测量了二氧化碳（CO_2）和甲烷（CH_4）的扩散排放量。仅通过倒漏斗和瓦斯浓度分别估算了Koombooloomba大坝水库2010年的冒泡和除气排放量。从2006年到2010年，总共采样了14个水库和16个河流和湖泊。每个水体内部以及水体之间的空间变化很大。扩散排放变化的主要驱动因素是地理区域和气候，在热带昆士兰州和塔斯马尼亚温带的扩散排放之间，以及在潮湿的西海岸山脉（塔斯马尼亚州）和干燥的中部高原（塔斯马尼亚州）之间存在明显的界线。在干旱季节观察到较高的CO_2和CH_4扩散排放，而较长的水停留时间将促进有机物降解。 Koombooloomba大坝水库的估计总排放总量（包括扩散，鼓泡和除气排放）约为每年1.5×10〜6 t CO_2eq km〜2，或每年24×10〜6 t CO_2eq。这相当于3.18 kg CO_2eq MWh〜（-1）的工厂排放因子。根据文献数据估算的塔利河集水区的地面排放量，集水区的粗略估算净排放量约为每年44 kt CO_2eq，即5.83 kg CO_2eq MWh〜（-1），处于较低范围研究的储层。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号