The fast death of a lake

湖泊几乎死亡

• 批准号: 397204570
• 负责人: Professor Dr. Christian Stolz
• 金额: --
• 依托单位: Abteilung Biologie und ihre Didaktik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/397204570?language=en
• 关键词: fast; death; lake

The research project deals with the Young Holocene interaction of a shallow channel lake in Schleswig-Holstein (North Germany) and an adjacent probably Late Glacial dune field, which was probably reactivated during Young Holocene. The lake shrank from more than 100 ha before 1800 AD to less than 5 ha today, due to different processes and artificial interference. So far, a detailed regard and a temporal classification of the shrinking process and the changes within the dune field are still missing. In particular, the influence of a probable dune reactivation to the lake and the existing of a presumed natural or artificial dam are still unknown. The investigation area is located in the North of Schleswig-Holstein along Lake Treßsee in the nature preserve area of Upper Treene Landscape. There is a close cooperation with the administration of the protection area. To answer open questions, drillings in the former lake basin and in the dune field are necessary. Dune sands, muds and organic relicts should be dated using OSL, AMS and pollen. Additionally, sediments and relief should be balanced and modelled using GIS and high definition digital landscape models. Furthermore, former pollutant inputs should be investigated, especially in consequence of the greasy wastewater of a sausage factory in the catchment. An important component of the project is the involvement of students in field and during laboratory work. For this purpose, a didactic concept was designed. Additionally, display boards in the field are planned. A Polish scientist should be involved in the project. Accordingly, travel expenses become applied. There were extensive prepares beforehand, dealing with the reconstruction of former lake levels using landscape models and fossil surfaces in the dune field. As a result, we were able to define different process regions in the former lake basin to reconstruct various processes of drying up of the lake. These results serve as a basis for the planned project.

研究项目研究了德国北部石勒苏益格-荷尔斯泰因地区的一个浅河道湖与邻近的一个可能是晚冰期沙丘场的相互作用，该沙丘场可能在全新世早期被重新激活。由于不同的过程和人为干扰，湖泊从公元1800年之前的100多公顷缩小到今天的不到5公顷。到目前为止，还没有对沙丘萎缩过程和沙丘场内部的变化进行详细的研究和时间分类。特别是，沙丘可能重新激活对湖泊的影响以及假定存在的天然或人工水坝的影响仍然未知。调查区域位于石勒苏益格-荷尔斯泰因州北部的Treßsee湖沿线，位于Upper Treene Landscape自然保护区。与保护区的管理部门有密切的合作。为了回答悬而未决的问题，有必要在原湖盆和沙丘区进行钻探。沙丘砂、泥和有机遗迹的年代测定应采用光释光法、AMS法和花粉法。此外，应平衡沉积物和地形，并使用GIS和高清数字景观模型进行建模。此外，应调查以前的污染物输入，特别是由于集水区一家香肠厂的油腻废水。该项目的一个重要组成部分是学生参与实地和实验室工作。为此，设计了一个教学概念。此外，还规划了现场显示板。应该有一位波兰科学家参与这个项目。因此，适用旅费。之前有大量的准备工作，利用景观模型和沙丘场的化石表面来重建以前的湖泊水平。因此，我们能够在原湖盆中定义不同的过程区域，以重建湖泊的各种干涸过程。这些结果作为计划项目的基础。