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学科主题: Soil Science
题名: Relationships between the biomass of algal crusts in fields and their compressive strength
作者: Xie, Zuoming; Liu, Yongding; Hua, Chunxiang; Chen, Lanzhou; Li, Dunhai
通讯作者: Liu, YD, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: desert algal crusts ; blue-green algae ; cyanobacteria ; wind erosion ; rain erosion ; EPS ; compressive strength ; scytonemin
刊名: SOIL BIOLOGY & BIOCHEMISTRY
发表日期: 2007-02-01
DOI: 10.1016/j.soilbio.2006.09.004
卷: 39, 期:2, 页:567-572
收录类别: SCI
文章类型: Article
部门归属: Chinese 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
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Soil Science
研究领域[WOS]: Agriculture
摘要: 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.
英文摘要: 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.
关键词[WOS]: DESERT SOIL ALGAE ; CRYPTOGAMIC CRUSTS ; CYANOBACTERIA ; STABILIZATION ; SUCCESSION
语种: 英语
WOS记录号: WOS:000243209100019
ISSN号: 0038-0717
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8736
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.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:
Xie, Zuoming; Liu, Yongding; Hua, Chunxiang; Chen, Lanzhou; Li, Dunhai.Relationships between the biomass of algal crusts in fields and their compressive strength,SOIL BIOLOGY & BIOCHEMISTRY,2007,39(2):567-572
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