SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS

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	SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS
	Wu, Peipei 1,2; Rao, Benqiang 1,3; Wang, Zhicong 1,2; Hu, Chunxiang 1; Shen, Yinwu 1; Liu, Yongding 1; Li, Dunhai 1
刊名	FRESENIUS ENVIRONMENTAL BULLETIN
	2013
卷号	22 期号:1A 页码:252-260
关键词	algae biological soil crusts cyanobacteria desertification manmade biotic crusts succession
ISSN号	1018-4619
通讯作者	Liu, YD (reprint author), Chinese Acad Sci, Inst Hydrobiol, South Donghu Rd, Wuhan 430042, Hubei, Peoples R China.
中文摘要	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.
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.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	BIOLOGICAL SOIL CRUSTS ; CYANOBACTERIUM MICROCOLEUS-VAGINATUS ; ALGAL CRUSTS ; DESERT SOIL ; COMMUNITY COMPOSITION ; NITROGEN-FIXATION ; INNER-MONGOLIA ; STABILITY ; CARBON ; STABILIZATION
收录类别	SCI
资助信息	National Key Technology RD Program [2009BAC54B01]
语种	英语
WOS记录号	WOS:000330269800015
公开日期	2014-08-06
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/19977]
专题	水生生物研究所_水环境工程研究中心_期刊论文
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
推荐引用方式 GB/T 7714	Wu, Peipei,Rao, Benqiang,Wang, Zhicong,et al. SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2013,22(1A):252-260.
APA	Wu, Peipei.,Rao, Benqiang.,Wang, Zhicong.,Hu, Chunxiang.,Shen, Yinwu.,...&Li, Dunhai.(2013).SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS.FRESENIUS ENVIRONMENTAL BULLETIN,22(1A),252-260.
MLA	Wu, Peipei,et al."SUCCESSION AND CONTRIBUTIONS TO ECOSYSTEM FUNCTION OF MANMADE BIOTIC CRUSTS".FRESENIUS ENVIRONMENTAL BULLETIN 22.1A(2013):252-260.