Soil structure formation through the action of plants and microbes

通过植物和微生物的作用形成土壤结构

• 批准号: 298892158
• 负责人: Professorin Dr. Ingrid Kögel-Knabner
• 金额: --
• 依托单位: Geographisches Institut
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/298892158?language=en
• 关键词: Soil; structure; formation; through; action

Soil structure refers to the size, shape and arrangement of solids and voids, continuity of pores and aggregation. The formation of soil structure is the result from the interaction of different biota, like plants, soil fauna and microbes with the weathered mineral material and organic matter. As a result soil-specific structures are formed. The aim of our investigations is to understand the interrelation between organic matter input through plants (from roots and plant litter), the pore network created through roots, the microbial community composition and function and the build-up of the soil aggregate structure. Our investigations will rely on a unique loess-based chronosequence from 0-24 y established during reclamation of open-cast lignite mining sites. For the first time investigations will be carried out by linking expertise from soil chemistry with microbial genomics and soil-plant interactions. Our approach is based on a combination of field studies with specific field and lab experiments, covering spatial scales from the pedon over soil columns to soil aggregates.

土壤结构是指固体和空隙的大小，形状和排列，孔的连续性和聚集。土壤结构的形成是不同生物群体相互作用的结果，例如植物，土壤动物和微生物与风化的矿物质物质和有机物。结果形成了土壤特异性结构。 我们调查的目的是了解通过植物（来自根和植物垃圾），通过根创建的孔网络，微生物群落组成和功能以及土壤聚集体结构的积累之间的相互关系。我们的调查将依赖于在开放式褐煤采矿地点开垦期间建立的0-24 y的独特基于黄土的计时Quence。首次通过将土壤化学的专业知识与微生物基因组学和土壤植物相互作用联系起来，进行研究。我们的方法是基于现场研究与特定场和实验室实验的组合，涵盖了佩顿（Pedon）从土壤柱上到土壤聚集体的空间尺度。