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，孔隙和团聚体的连续性。土壤结构的形成是植物、土壤动物和微生物等不同生物群与风化矿物和有机质相互作用的结果。因此，形成了土壤特有的结构。 我们的调查的目的是了解有机质输入通过植物（从根和植物凋落物），通过根，微生物群落的组成和功能和土壤团聚体结构的建立创建的孔隙网络之间的相互关系。我们的调查将依赖于在露天褐煤采矿场复垦期间建立的0-24年独特的基于黄土的年代序列。将首次通过将土壤化学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调查。我们的方法是基于特定的现场和实验室实验相结合的实地研究，涵盖了从土柱上的土壤团聚体的空间尺度。