Water’s path from moss to soil Vol. 2: how soil-moss combinations affect soil water fluxes and soil loss in a temperate forest

IF 1.4 4区 生物学 Q3 BIOLOGY
Corinna Gall, Martin Nebel, Thomas Scholten, Sonja M. Thielen, Steffen Seitz
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Abstract

Mosses are key components of many ecosystems and particularly related to water cycling. In principle, the importance of mosses for water-related processes is known; however, their influence is rarely quantified in scientific studies. To fill this research gap, this study concentrates on the influence of mosses of different species on surface runoff, the amount of percolated water, soil loss, and the temporal dynamics of soil water content. For this purpose, an experimental approach consisting of an ex situ rainfall simulation (45 mm h− 1 for 30 min) with infiltration boxes equipped with biocrust wetness probes was applied. On average, mosses significantly reduced surface runoff by 91% and soil loss by almost 100%, while the amount of percolated water was increased by 85% compared with bare soils. These processes were superimposed by desiccation cracks, and partly water repellency, with the result that the respective influences could not be quantified individually. However, by simultaneously measuring the water content in the substrates during rainfall simulations, we were able to achieve a better understanding of the water flows in the substrates. For instance, water content at 3 cm substrate depth was higher under mosses than in bare soils, implying that mosses facilitated infiltration. In this study, we were able to demonstrate that mosses play an important role in soil hydrology and in protecting the soil from erosion, and it is imperative that further experiments will be conducted to elucidate the apparently underestimated effects of mosses and their specific traits on soil water fluxes and sediment transport.

Abstract Image

水从苔藓到土壤的路径第 2 卷:土壤-苔藓组合如何影响温带森林的土壤水通量和土壤流失
苔藓是许多生态系统的关键组成部分,尤其与水循环有关。原则上,苔藓对与水有关的过程的重要性是众所周知的;但是,科学研究很少量化苔藓的影响。为了填补这一研究空白,本研究集中探讨了不同种类的苔藓对地表径流、渗透水量、土壤流失以及土壤含水量的时间动态的影响。为此,研究人员采用了一种实验方法,即模拟原地降雨(45 毫米/小时-1,30 分钟),并在装有生物藓湿度探头的渗透箱中进行实验。平均而言,与裸露土壤相比,苔藓大大减少了 91% 的地表径流和近 100% 的土壤流失,同时增加了 85% 的渗水量。这些过程由干燥裂缝和部分憎水性叠加而成,因此无法单独量化各自的影响。不过,通过在降雨模拟过程中同时测量基质中的含水量,我们能够更好地了解基质中的水流情况。例如,苔藓覆盖下 3 厘米基质深度的含水量高于裸土,这意味着苔藓促进了下渗。在这项研究中,我们能够证明苔藓在土壤水文和保护土壤免受侵蚀方面发挥着重要作用,当务之急是开展进一步的实验,以阐明苔藓及其特殊性状对土壤水通量和沉积物迁移的明显低估的影响。
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来源期刊
Biologia
Biologia 生物-生物学
CiteScore
3.30
自引率
6.70%
发文量
290
审稿时长
6 months
期刊介绍: Established in 1946, Biologia publishes high-quality research papers in the fields of microbial, plant and animal sciences. Microbial sciences papers span all aspects of Bacteria, Archaea and microbial Eucarya including biochemistry, cellular and molecular biology, genomics, proteomics and bioinformatics. Plant sciences topics include fundamental research in taxonomy, geobotany, genetics and all fields of experimental botany including cellular, whole-plant and community physiology. Zoology coverage includes animal systematics and taxonomy, morphology, ecology and physiology from cellular to molecular level.
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