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题名: Effects of sand burial stress on the early developments of cyanobacterial crusts in the field
作者: Rao, Benqiang1, 2; Liu, Yongding1; Lan, Shubin1, 3; Wu, Peipei1, 3; Wang, Weibo1; Li, Dunhai1
通讯作者: Liu, YD (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 DongHu S Rd, Wuhan 430072, Peoples R China
关键词: Biological soil crusts ; Cyanobacterial crusts ; Sand burial ; Chlorophyll a ; Total carbohydrate ; Compressive strength ; PSII activity ; Scytonemin
刊名: EUROPEAN JOURNAL OF SOIL BIOLOGY
发表日期: 2012
DOI: 10.1016/j.ejsobi.2011.07.009
卷: 48, 页:48-55
收录类别: SCI
文章类型: Article
部门归属: [Rao, Benqiang; Liu, Yongding; Lan, Shubin; Wu, Peipei; Wang, Weibo; Li, Dunhai] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Rao, Benqiang] Xinyang Normal Univ, Coll Life Sci, Xinyang 464000, Peoples R China; [Lan, Shubin; Wu, Peipei] Chinese Acad Environm Sci, Beijing 100012, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Inner Mongolia development and innovation Committee; government of Wuhan city; Chinese National Natural Sciences Foundation[30770395]
类目[WOS]: Ecology ; Soil Science
研究领域[WOS]: Environmental Sciences & Ecology ; Agriculture
摘要: Sand burial is a noticeable environmental disturbance commonly experienced by various types of biological soil crusts (BSCs) composed of microorganisms. BSCs have been regarded as a feasible avenue to resist desertification in China. However, the cyanobacterial crusts, existing at early developmental stage of BSCs, are exceedingly susceptible to burial by sand. Therefore, a study campaign over 7-week was conducted in fields to evaluate the effects of sand burial (burial depth of 0, 0.5, 1, 3 and 5 cm) on the crusts in Hopq Desert, China. The results showed that sand burial imposed severe stress on the cyanobacteria crusts, such as the reduction of chlorophyll a, the restraint of scytonemin synthesis and the damage to PSII activity, as well as the decrease of total carbohydrate reserve. We discuss in this study possible mechanisms by which cyanobacterial crusts tolerate burial, and the positive role of rain in the recovery of cyanobacterial crusts from burial. It is necessary for the cyanobacterial crusts to allay burial disturbances in order to ensure their better contribution to desert reclamation. (C) 2011 Published by Elsevier Masson SAS.
英文摘要: Sand burial is a noticeable environmental disturbance commonly experienced by various types of biological soil crusts (BSCs) composed of microorganisms. BSCs have been regarded as a feasible avenue to resist desertification in China. However, the cyanobacterial crusts, existing at early developmental stage of BSCs, are exceedingly susceptible to burial by sand. Therefore, a study campaign over 7-week was conducted in fields to evaluate the effects of sand burial (burial depth of 0, 0.5, 1, 3 and 5 cm) on the crusts in Hopq Desert, China. The results showed that sand burial imposed severe stress on the cyanobacteria crusts, such as the reduction of chlorophyll a, the restraint of scytonemin synthesis and the damage to PSII activity, as well as the decrease of total carbohydrate reserve. We discuss in this study possible mechanisms by which cyanobacterial crusts tolerate burial, and the positive role of rain in the recovery of cyanobacterial crusts from burial. It is necessary for the cyanobacterial crusts to allay burial disturbances in order to ensure their better contribution to desert reclamation. (C) 2011 Published by Elsevier Masson SAS.
关键词[WOS]: BIOLOGICAL SOIL CRUSTS ; ALGAL CRUSTS ; TENGGER DESERT ; SEEDLING EMERGENCE ; NORTHERN CHINA ; DUNE SYSTEMS ; GERMINATION ; SURVIVAL ; GROWTH ; SCYTONEMIN
语种: 英语
WOS记录号: WOS:000300036500007
ISSN号: 1164-5563
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16747
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, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Xinyang Normal Univ, Coll Life Sci, Xinyang 464000, Peoples R China
3.Chinese Acad Environm Sci, Beijing 100012, Peoples R China

Recommended Citation:
Rao, Benqiang; Liu, Yongding; Lan, Shubin; Wu, Peipei; Wang, Weibo; Li, Dunhai.Effects of sand burial stress on the early developments of cyanobacterial crusts in the field,EUROPEAN JOURNAL OF SOIL BIOLOGY,2012,48():48-55
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