Modelling the influence of snowfall on cyanobacterial crusts in the Gurbantunggut Desert, northern China
文献类型：期刊论文
| 作者 | Hui, R.1; Zhao, R. M.2; Liu, L. C.1; Li, G.1; Yang, H. T.1; Gao, Y. H.1; Wang, X. Q.3 |
| 刊名 | AUSTRALIAN JOURNAL OF BOTANY
 |
| 出版日期 | 2016 |
| 卷号 | 64期号:6页码:476-483 |
| ISSN号 | 0067-1924 |
| 关键词 | biomass chlorophyll (Chl) fluorescence moisture content physiological activities |
| DOI | 10.1071/BT16008 |
| 通讯作者 | Hui, R.(huirong850623@163.com) |
| 英文摘要 | Biological soil crusts (BSCs) are widespread in arid and semiarid regions. They have long been regarded as a key biotic component of desert ecosystems. However, little information is available regarding the influence of snowfall on BSCs in desert ecosystems. Therefore, we conducted the present work in the largest fixed and semi-fixed desert in China, the Gurbantunggut Desert, where snowfall is a special form of precipitation, and snow cover is a prerequisite for BSC survival during the harsh winter. We investigated the effects of altered winter snowfall on biomass, chlorophyll (Chl) fluorescence, moisture content, and soluble-protein and malondialdehyde (MDA) concentrations in cyanobacterial crusts in the early (March) and late (October) periods after snowfall in 2014. The results indicated that biomass (indicated by Chl a), Chl fluorescence (i.e. maximum photochemical efficiency, fluorescence yield and rates of electron transport) and the concentration of soluble protein of cyanobacterial crusts declined as a result of lower soil water content resulting from snow removal or reduction. Increased snowfall had positive effects on physiological properties associated with photosynthesis but induced dramatic decreases in the MDA concentration in cyanobacterial crusts. In addition, photosynthesis of cyanobacterial crusts was obviously higher in the late than in the early period after snowfall, which can be attributed to increases in the cover of cyanobacteria in the crust communities. These findings provided evidence that increased snowfall in the Gurbantunggut Desert could favour and help maintain the development of BSCs. |
| 收录类别 | SCI |
| WOS关键词 | BIOLOGICAL SOIL CRUSTS ; DIFFERENT SUCCESSIONAL STAGES ; ARID DESERT ; NORTHWESTERN CHINA ; TENGGER-DESERT ; DISTRIBUTION PATTERNS ; MICROBIAL ACTIVITY ; CARBON FIXATION ; GLOBAL CHANGE ; CO2 EXCHANGE |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | CSIRO PUBLISHING |
| WOS记录号 | WOS:000384673500002 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557431 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Hui, R. |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hui, R.,Zhao, R. M.,Liu, L. C.,et al. Modelling the influence of snowfall on cyanobacterial crusts in the Gurbantunggut Desert, northern China[J]. AUSTRALIAN JOURNAL OF BOTANY,2016,64(6):476-483. |
| APA | Hui, R..,Zhao, R. M..,Liu, L. C..,Li, G..,Yang, H. T..,...&Wang, X. Q..(2016).Modelling the influence of snowfall on cyanobacterial crusts in the Gurbantunggut Desert, northern China.AUSTRALIAN JOURNAL OF BOTANY,64(6),476-483. |
| MLA | Hui, R.,et al."Modelling the influence of snowfall on cyanobacterial crusts in the Gurbantunggut Desert, northern China".AUSTRALIAN JOURNAL OF BOTANY 64.6(2016):476-483. |
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来源：寒区旱区环境与工程研究所
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