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题名: Composition of photosynthetic organisms and diurnal changes of photosynthetic efficiency in algae and moss crusts
作者: Lan, Shubin1; Wu, Li1; Zhang, Delu1, 2; Hu, Chunxiang1
通讯作者: Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: Biological soil crusts ; Photosynthetic efficiency ; Diurnal changes ; Chlorophyll fluorescence
刊名: PLANT AND SOIL
发表日期: 2012-02-01
DOI: 10.1007/s11104-011-0966-9
卷: 351, 期:1-2, 页:325-336
收录类别: SCI
文章类型: Article
部门归属: [Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Zhang, Delu] Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China[30870470, 31170464]; National Principal Expert Program[2009ZX07210-009]; Wuhan Science and Technology Bureau; Inner Mongolia Planning Committee on high-tech industrialization
类目[WOS]: Agronomy ; Plant Sciences ; Soil Science
研究领域[WOS]: Agriculture ; Plant Sciences
摘要: In Dalateqi region of Inner Mongolia (at eastern edge of Qubqi Desert), man-made algae crusts were constructed with two filamentous cyanobacteria. Two to three years later, the algae crusts began to succeed to moss crusts under some microterrain conditions. In order to characterize the community structure and compare the photosynthetic characteristics in different successional stages of biological soil crusts (BSCs). This paper studied composition of photosynthetic organisms and diurnal changes of photosynthetic efficiency, with microscopic observation and chlorophyll fluorescence monitoring techniques. Compared with the early successional algae crusts, later moss crusts had a higher photosynthetic efficiency, which was closely related with the different community structure of photosynthetic organisms. Further, moss crusts had a higher total photosynthetic biomass, although the algal biomass decreased along the successional sequence. Similar to higher vascular plants, a midday depression of photosynthetic efficiency was detected in BSCs, although the depression extents were different in different successional stages. Analysis demonstrated the depression was mainly caused by non-stomata limitations, and photosynthetically active radiation (PAR) was a significant influencing factor in the down-regulation of photosynthetic efficiency. We conclude, cyanobacterial inoculation effectively promotes the formation, development and seccession of BSCs. Furthermore, the later successional BSCs have a better photosynthetic performance and thus are expected to play a more effective role in desertification control.
英文摘要: In Dalateqi region of Inner Mongolia (at eastern edge of Qubqi Desert), man-made algae crusts were constructed with two filamentous cyanobacteria. Two to three years later, the algae crusts began to succeed to moss crusts under some microterrain conditions. In order to characterize the community structure and compare the photosynthetic characteristics in different successional stages of biological soil crusts (BSCs).
关键词[WOS]: BIOLOGICAL SOIL CRUSTS ; CHLOROPHYLL FLUORESCENCE ANALYSIS ; DIFFERENT SUCCESSIONAL STAGES ; FIELD CONDITIONS ; INNER-MONGOLIA ; ALPHA FLUORESCENCE ; MIDDAY DEPRESSION ; SOYBEAN LEAVES ; DESERT PLANTS ; GAS-EXCHANGE
语种: 英语
WOS记录号: WOS:000299959100023
ISSN号: 0032-079X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16771
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China

Recommended Citation:
Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang.Composition of photosynthetic organisms and diurnal changes of photosynthetic efficiency in algae and moss crusts,PLANT AND SOIL,2012,351():325-336
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