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题名: SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS
作者: Wu, Peipei1, 2; Rao, Benqiang1, 3; Wang, Zhicong1, 2; Hu, Chunxiang1; Shen, Yinwu1; Liu, Yongding1; Li, Dunhai1
通讯作者: Liu, YD (reprint author), Chinese Acad Sci, Inst Hydrobiol, South Donghu Rd, Wuhan 430042, Hubei, Peoples R China.
关键词: algae ; biological soil crusts ; cyanobacteria ; desertification ; manmade biotic crusts ; succession
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2013
卷: 22, 期:1A, 页:252-260
收录类别: SCI
文章类型: Article
部门归属: [Wu, Peipei ; Rao, Benqiang ; Wang, Zhicong ; Hu, Chunxiang ; Shen, Yinwu ; Liu, Yongding ; Li, Dunhai] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China ; [Wu, Peipei ; Wang, Zhicong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Rao, Benqiang] Xinyang Normal Univ, Coll Life Sci, Xinyang 464000, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Key Technology RD Program [2009BAC54B01]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Biological soil crusts (BSCs) play a crucial role in counteracting desertification. Manmade biotic crusts (MBCs) could be established rapidly by inoculation of cyanobacterial strains Microcoleus vaginatus and Scytonema javanicum in Hobq Desert, Inner Mongolia of China. This study investigated the morphological and ecophysiological characteristics as well as microstructures of MBCs in a field setting. Based on their color and succession process, MBCs were sequentially divided into five stages as, light gray, gray-black, black, black-green and green crusts. Their compressive strength, thickness, species number of cyanobacteria and eukaryotic algae, photosynthetic efficiency as well as carbon-assimilation rates increased with the development of MBCs. In addition, among the five successional stages, green crusts had the highest contents of chlorophyll a; however, black crusts had the highest content of scytonemin. By ultrastructural observation, filamentous cyanobacteria were found closely bound to sand particles. The findings of this study have important theoretical implications for understanding the survival and developmental conditions of MBCs in the field. Furthermore, the results have also clearly demonstrated the feasibility of counteracting desertification by inoculation of MBCs in desert areas.
英文摘要: Biological soil crusts (BSCs) play a crucial role in counteracting desertification. Manmade biotic crusts (MBCs) could be established rapidly by inoculation of cyanobacterial strains Microcoleus vaginatus and Scytonema javanicum in Hobq Desert, Inner Mongolia of China. This study investigated the morphological and ecophysiological characteristics as well as microstructures of MBCs in a field setting. Based on their color and succession process, MBCs were sequentially divided into five stages as, light gray, gray-black, black, black-green and green crusts. Their compressive strength, thickness, species number of cyanobacteria and eukaryotic algae, photosynthetic efficiency as well as carbon-assimilation rates increased with the development of MBCs. In addition, among the five successional stages, green crusts had the highest contents of chlorophyll a; however, black crusts had the highest content of scytonemin. By ultrastructural observation, filamentous cyanobacteria were found closely bound to sand particles. The findings of this study have important theoretical implications for understanding the survival and developmental conditions of MBCs in the field. Furthermore, the results have also clearly demonstrated the feasibility of counteracting desertification by inoculation of MBCs in desert areas.
关键词[WOS]: BIOLOGICAL SOIL CRUSTS ; CYANOBACTERIUM MICROCOLEUS-VAGINATUS ; ALGAL CRUSTS ; DESERT SOIL ; COMMUNITY COMPOSITION ; NITROGEN-FIXATION ; INNER-MONGOLIA ; STABILITY ; CARBON ; STABILIZATION
语种: 英语
项目资助者: National Key Technology RD Program(2009BAC54B01)
WOS记录号: WOS:000330269800015
ISSN号: 1018-4619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19977
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xinyang Normal Univ, Coll Life Sci, Xinyang 464000, Peoples R China

Recommended Citation:
Wu, Peipei; Rao, Benqiang; Wang, Zhicong; Hu, Chunxiang; Shen, Yinwu; Liu, Yongding; Li, Dunhai.SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS,FRESENIUS ENVIRONMENTAL BULLETIN,2013,22(1A):252-260
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