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Relationships between the biomass of algal crusts in fields and their compressive strength
Xie, Zuoming; Liu, Yongding; Hua, Chunxiang; Chen, Lanzhou; Li, Dunhai; Liu, YD, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2007-02-01
Source PublicationSOIL BIOLOGY & BIOCHEMISTRY
ISSN0038-0717
Volume39Issue:2Pages:567-572
AbstractIn the desert areas of China investigated by the authors, various biological crusts were predominately associated with three blue-green algal (cyano bacterial) species, Microcoleus vaginatus Gom., Phormidium tenue (Menegh.) Gom. and Seytonema javanicum (Mitz.) Born et Flah. Their biomass and their compressive strength were measured simultaneously in the field in this study. It was also found that the compressive strength of algal crusts was enhanced with the increasing of algal biomass from an undetectable level to a value as high as 9.6mg g(-1) dry soil. However, when the algal biomass decreased, the compressive strength did not descend immediately, but remained relatively steady. The higher the algal biomass became, the thicker were the algal crusts formed. Given the same biomass, the highest compressive strength of man-made algal crusts in fields was found at an algal ratio of 62.5% M. vaginatus, 31.25% P. tenue and 6.25% S. javanicum, and it reached 0.89kgcm(-2). When the biomass of the crusts increased above the value of 8.16 mg chl ag(-1) dry soil, the compressive strength would not ascend easily. It indicated that the compressive strength of man-made algal crusts appeared temporarily saturated in the field. (c) 2006 Elsevier Ltd. All rights reserved.; In the desert areas of China investigated by the authors, various biological crusts were predominately associated with three blue-green algal (cyano bacterial) species, Microcoleus vaginatus Gom., Phormidium tenue (Menegh.) Gom. and Seytonema javanicum (Mitz.) Born et Flah. Their biomass and their compressive strength were measured simultaneously in the field in this study. It was also found that the compressive strength of algal crusts was enhanced with the increasing of algal biomass from an undetectable level to a value as high as 9.6mg g(-1) dry soil. However, when the algal biomass decreased, the compressive strength did not descend immediately, but remained relatively steady. The higher the algal biomass became, the thicker were the algal crusts formed. Given the same biomass, the highest compressive strength of man-made algal crusts in fields was found at an algal ratio of 62.5% M. vaginatus, 31.25% P. tenue and 6.25% S. javanicum, and it reached 0.89kgcm(-2). When the biomass of the crusts increased above the value of 8.16 mg chl ag(-1) dry soil, the compressive strength would not ascend easily. It indicated that the compressive strength of man-made algal crusts appeared temporarily saturated in the field. (c) 2006 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordDesert Algal Crusts Blue-green Algae Cyanobacteria Wind Erosion Rain Erosion Eps Compressive Strength Scytonemin
DepartmentChinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; China Univ Geosci, Sch Environm, Wuhan 430074, Peoples R China; Wuhan Univ, Dept Resource & Environm Sci, Wuhan 430072, Peoples R China
Subject AreaSoil Science
DOI10.1016/j.soilbio.2006.09.004
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000243209100019
WOS KeywordDESERT SOIL ALGAE ; CRYPTOGAMIC CRUSTS ; CYANOBACTERIA ; STABILIZATION ; SUCCESSION
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8736
Collection期刊论文
Corresponding AuthorLiu, YD, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.China Univ Geosci, Sch Environm, Wuhan 430074, Peoples R China
4.Wuhan Univ, Dept Resource & Environm Sci, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Xie, Zuoming,Liu, Yongding,Hua, Chunxiang,et al. Relationships between the biomass of algal crusts in fields and their compressive strength[J]. SOIL BIOLOGY & BIOCHEMISTRY,2007,39(2):567-572.
APA Xie, Zuoming,Liu, Yongding,Hua, Chunxiang,Chen, Lanzhou,Li, Dunhai,&Liu, YD, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2007).Relationships between the biomass of algal crusts in fields and their compressive strength.SOIL BIOLOGY & BIOCHEMISTRY,39(2),567-572.
MLA Xie, Zuoming,et al."Relationships between the biomass of algal crusts in fields and their compressive strength".SOIL BIOLOGY & BIOCHEMISTRY 39.2(2007):567-572.
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