土壤微集料的结构:探索特性和功能的先进方法

IF 2.6 3区 农林科学 Q1 AGRONOMY
Wulf Amelung, Ni Tang, Nina Siebers, Michaela Aehnelt, Karin Eusterhues, Vincent J. M. N. L. Felde, Georg Guggenberger, Klaus Kaiser, Ingrid Kögel-Knabner, Erwin Klumpp, Claudia Knief, Jens Kruse, Eva Lehndorff, Robert Mikutta, Stephan Peth, Nadja Ray, Alexander Prechtel, Thomas Ritschel, Steffen A. Schweizer, Susanne K. Woche, Bei Wu, Kai U. Totsche
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引用次数: 0

摘要

土壤的功能与其三维孔隙空间和相关的生物地球化学界面密切相关,在成土过程中形成的复杂结构也反映了这一点。在应力超载的情况下,土壤会分解成更小的复合结构,也就是通常所说的团聚体。微团聚体(250 微米)被认为是最稳定的土壤结构单位。它们由矿物、有机和生物材料构成,为种类繁多的微生物提供栖息地,并密切参与物质和能量的循环。然而,探索土壤微团聚体的结构及其与土壤功能之间的联系仍然是一项极具挑战性但要求极高的科学工作。随着光谱显微镜和层析成像技术的出现,我们现在可以对微团聚体的大小、成分、孔隙度及其内部结构单元的空间排列进行评估和可视化。这些技术与先进的实验土壤学、多同位素标记实验和计算方法相结合,为研究微团聚体的更替和稳定性、探索它们在元素循环中的作用以及揭示结构与功能之间错综复杂的联系铺平了道路。然而,光谱技术在不同的尺度和分辨率下工作,对样品制备和微团聚体分离有特定的要求;因此,必须特别注意以可重复的方式分离微团聚体,并对来自不同互补仪器技术的地理信息进行汇总。后者要求在目前相关分析的基础上,进一步开发同步定位和同步尺度的策略。在此,我们将举例说明最近的科学进展,并回顾联合应用尖端技术以实现对土壤微团聚体特性和功能的复杂描述所面临的选择和挑战。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Architecture of soil microaggregates: Advanced methodologies to explore properties and functions

Architecture of soil microaggregates: Advanced methodologies to explore properties and functions

The functions of soils are intimately linked to their three-dimensional pore space and the associated biogeochemical interfaces, mirrored in the complex structure that developed during pedogenesis. Under stress overload, soil disintegrates into smaller compound structures, conventionally named aggregates. Microaggregates (<250 µm) are recognized as the most stable soil structural units. They are built of mineral, organic, and biotic materials, provide habitats for a vast diversity of microorganisms, and are closely involved in the cycling of matter and energy. However, exploring the architecture of soil microaggregates and their linkage to soil functions remains a challenging but demanding scientific endeavor. With the advent of complementary spectromicroscopic and tomographic techniques, we can now assess and visualize the size, composition, and porosity of microaggregates and the spatial arrangement of their interior building units. Their combinations with advanced experimental pedology, multi-isotope labeling experiments, and computational approaches pave the way to investigate microaggregate turnover and stability, explore their role in element cycling, and unravel the intricate linkage between structure and function. However, spectromicroscopic techniques operate at different scales and resolutions, and have specific requirements for sample preparation and microaggregate isolation; hence, special attention must be paid to both the separation of microaggregates in a reproducible manner and the synopsis of the geography of information that originates from the diverse complementary instrumental techniques. The latter calls for further development of strategies for synlocation and synscaling beyond the present state of correlative analysis. Here, we present examples of recent scientific progress and review both options and challenges of the joint application of cutting-edge techniques to achieve a sophisticated picture of the properties and functions of soil microaggregates.

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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
90
审稿时长
8-16 weeks
期刊介绍: Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.
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