• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International astronautical congress >Soil fertilisation by glacial microbial communities in a Martian analogue environment
【24h】

Soil fertilisation by glacial microbial communities in a Martian analogue environment

机译：火星模拟环境中冰川微生物群落的土壤肥力

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Sending humans to Mars and the human colonisation of the planet have been the subject of extensive space research for decades. Human exploration of Mars may be achieved before the end of this century. However, developing the means to grow food on Mars remains one of the major challenges that needs to be overcome before this becomes a reality. A variety of techniques have been tested previously for life support systems in space and to produce food on Mars. This is the first study to use microbial communities for soil fertilisation by producing and recycling organic matter efficiently in simulated Martian conditions. Microorganisms from the surface of the Greenland Ice Sheet were mixed with Martian analogue sediment in the "Martian casserole' simulation experiment at the Mars Desert Research Station in Utah, USA. These glacial microbes were known to produce significant amounts of organic matter when stimulated by minimal amounts of nutrients. In less than three months, these microbes were found to produce and accumulate organic carbon with concentrations up to 7.3 ± 0.5 mgOC/g of sediment, despite the desert environment and anoxic conditions. The organic carbon production was dependant on photosynthetic activity, water saturation, nitrogen and phosphorous mining out of sediment, and nutrient recycling by heterotrophic microbes. These microbial communities are thus promising candidates for future soil fertilisation in Martian greenhouses, and even for terraforming the planet. Similar approaches could also be applied to developing soil fertilisation techniques for countries in the world struggling with nutrient deprived soils.
机译：几十年来，将人类送往火星和人类对地球的殖民化一直是广泛的太空研究的主题。人类对火星的探索可能会在本世纪末之前完成。然而，开发在火星上种植食物的方法仍然是要成为现实之前需要克服的主要挑战之一。先前已经对太空中的生命支持系统和在火星上生产食物的各种技术进行了测试。这是第一个通过在模拟火星条件下有效生产和循环利用有机物而利用微生物群落进行土壤肥力的研究。在美国犹他州火星沙漠研究站的“火锅砂锅”模拟实验中，格陵兰冰原表面的微生物与火星类似沉积物混合。已知这些冰河微生物在极少的刺激下会产生大量有机物。在不到三个月的时间里，尽管沙漠环境和缺氧条件下，这些微生物仍能产生并积累高达7.3±0.5 mgOC / g沉积物的有机碳，但有机碳的产生取决于光合作用，水饱和度，沉积物中的氮和磷的开采以及异养微生物的养分循环，这些微生物群落因此有望成为火星温室日后施肥甚至是造地球的候选土壤，类似的方法也可以用于发展土壤苦苦挣扎的世界各国的施肥技术营养缺乏的土壤。

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