Linking biodiversity to biogeochemical cycling (C-N cycling) in grasslands by soil structure (BIOSTRUC)

通过土壤结构将生物多样性与草原生物地球化学循环（C-N 循环）联系起来（BIOSTRUC）

• 批准号: 193798069
• 负责人: Dr. Uwe Franko
• 金额: --
• 依托单位: Fachbereich 8.5: Mikro-ZfP
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/193798069?language=en
• 关键词: Linking; biodiversity; biogeochemical; cycling; grasslands

Soil structure, the spatial arrangement of pores and solid soil parts, is a key element in grassland ecosystem functioning. Soil structure is affected by land use, develops under the influence of soil biota such as earthworms, characterizes the microhabitat for non-burrowing soil organisms and determines C-N transformation processes in soil. The analysis of soil structure may provide explanations for different microbial and faunal soil communities at differently managed grassland sites. It also enables to assess functional effects of biodiversity, and allows predictions of C-N transformation processes in soil. It is the aim of this project, in close cooperation with other research groups, a) to characterize soil structure by X-ray computed microtomography down to a resolution of 5 μm, b) to relate morphological features of soil structure to distribution patterns of soil communites, and c) to predict C-N dynamics in differently managed grassland sites with simulation models based on soil structure. With this project, it is envisaged to functionally link landuse, biodiversity and C-N dynamics in grasslands.

土壤结构是孔和固体土壤部分的空间排列，是草地生态系统功能的关键要素。土壤结构受土地使用的影响，在土壤生物植物（例如earth）的影响下发展，其特征是非繁殖土壤生物的微生境，并确定土壤中的C-N转化过程。土壤结构的分析可能会为不同管理的草地遗址的不同微生物和动物土壤社区提供解释。它还可以评估生物多样性的功能效应，并允许对土壤中C-N转化过程的预测。该项目的目的是与其他研究小组密切合作，a）通过X射线计算的微观图表来表征土壤结构，以至于分辨率为5μm，b）b）b）土壤结构与土壤分布模式的相关形态学特征，c）预测基于土壤结构的模拟模型的不同管理草地模型中的C-N动态。有了这个项目，它可以设想在草原的功能上将土地用途，生物多样性和C-N动力学联系起来。