干旱区生态环境知识资源中心(Arid): Soil organic matter content and its aliphatic character define the hydrophobicity of biocrusts in different successional stages

Arid

DOI	10.1002/eco.2232
	Soil organic matter content and its aliphatic character define the hydrophobicity of biocrusts in different successional stages
	Drahorad, Sylvie L.; Jehn, Florian U.; Ellerbrock, Ruth H.; Siemens, Jan; Felix-Henningsen, Peter
通讯作者	Drahorad, SL
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2020
卷号	13 期号:6
英文摘要	In humid areas, biocrusts cover topsoils of inland dunes and influence soil characteristics, which, in turn, may affect the hydrophobicity of soils. The hydrophobicity of topsoils typically increases with increasing organic matter content. In addition, the soil organic matter quality, for example, described by the ratio of its hydrophilic and hydrophobic functional groups, also influences hydrophobicity. Because biocrust development goes along with an increase in the organic matter content and a shift in microbial community composition, the chemical character of soil organic matter likely changes over time, which, in turn, affects the hydrophobicity of the crusts. We hypothesize that the hydrophobicity of biocrusts increases during succession because of increasing amounts and aliphatic character of organic matter. We compared organic matter contents and Fourier-transform infrared spectra of cyanobacterial biocrusts and moss-dominated biocrusts at two European inland dunes. The organic carbon content as well as the hydrophobicity increased during crust development at both sites. Older moss-dominated biocrusts showed the highest hydrophobicity and the highest organic carbon content. Moreover, at one study site, the hydrophobicity of the biocrusts did increase with decreasing ratio between hydrophilic and hydrophobic (i.e., aliphatic) moieties of soil organic matter. At the second study site, this effect was only visible for the moss-dominated biocrust. We conclude that biocrust development and organic matter accumulation go ahead with changes in the organic matter composition and induce increased hydrophobicity with a strong impact on water redistribution in inland dune ecosystems. This knowledge will help to improve nature protection strategies in rare ecosystems.
英文关键词	biological soil crusts early ecosystems inland dunes organic matter composition water repellency
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	SCI-E
WOS记录号	WOS:000545273400001
WOS关键词	WATER REPELLENCY ; NEGEV DESERT ; CRUSTS ; FOREST
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324923
作者单位	[Drahorad, Sylvie L.; Siemens, Jan; Felix-Henningsen, Peter] Justus Liebig Univ Giessen, Inst Soil Sci & Soil Conservat, Res Ctr BioSyst Land Use & Nutr iFZ, Heinrich Buff Ring 26, D-35392 Giessen, Germany; [Jehn, Florian U.] Justus Liebig Univ Giessen, Inst Landscape Ecol & Resources Management ILR, Res Ctr BioSyst Land Use & Nutr iFZ, Giessen, Germany; [Ellerbrock, Ruth H.] Leibniz Ctr Agr Landscape Res ZALF, Working Grp Hydropedol Res Area Landscape Functio, Muncheberg, Germany
推荐引用方式 GB/T 7714	Drahorad, Sylvie L.,Jehn, Florian U.,Ellerbrock, Ruth H.,et al. Soil organic matter content and its aliphatic character define the hydrophobicity of biocrusts in different successional stages[J],2020,13(6).
APA	Drahorad, Sylvie L.,Jehn, Florian U.,Ellerbrock, Ruth H.,Siemens, Jan,&Felix-Henningsen, Peter.(2020).Soil organic matter content and its aliphatic character define the hydrophobicity of biocrusts in different successional stages.ECOHYDROLOGY,13(6).
MLA	Drahorad, Sylvie L.,et al."Soil organic matter content and its aliphatic character define the hydrophobicity of biocrusts in different successional stages".ECOHYDROLOGY 13.6(2020).