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学科主题: Biochemistry & Molecular Biology; Plant Sciences
题名: Primary succession of algal community structure in desert soil
作者: Hu, CX; Liu, YD
通讯作者: Liu, YD, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: desert soil ; algae ; community structure ; primary succession
刊名: ACTA BOTANICA SINICA
发表日期: 2003-08-01
卷: 45, 期:8, 页:917-924
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; NW Normal Univ, Coll Life Sci, Lanzhou 730070, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Biochemistry & Molecular Biology ; Plant Sciences
研究领域[WOS]: Biochemistry & Molecular Biology ; Plant Sciences
摘要: The microbiotic crust study is among new focuses in investigating on the desertification control. Based on determination of algal crusts with different successive ages (4-, 8-, 17-, 34-, 42-year-old) and unconsolidated sand in the desert area, species composition and clustering analyses were carried out in this study. Results on successional orientation revealed that (1) the abundance of Cyanophyta, specially of Scytonema javanicum gradually decreased; (2) the abundance of Chlorophyta, Bacillariophyta and a species of Cyanophyta, Phormidium tenue increased; (3) the biodiversity increased gradually with the community succession; and (4) biomass of microalgae increased at the early stage, but decreased at the later stage due to the abundance of lichens and mosses. But, the speed of natural succession was so slow that the community-building species was still the first dominant species after 42 years, except that its dominant degree decreased just slightly. However, successive speed and trend were affected by water, vegetation coverage, terrain, time and soil physico-chemical properties as well, especially Mn content in the soil appeared to have a threshold effect.
英文摘要: The microbiotic crust study is among new focuses in investigating on the desertification control. Based on determination of algal crusts with different successive ages (4-, 8-, 17-, 34-, 42-year-old) and unconsolidated sand in the desert area, species composition and clustering analyses were carried out in this study. Results on successional orientation revealed that (1) the abundance of Cyanophyta, specially of Scytonema javanicum gradually decreased; (2) the abundance of Chlorophyta, Bacillariophyta and a species of Cyanophyta, Phormidium tenue increased; (3) the biodiversity increased gradually with the community succession; and (4) biomass of microalgae increased at the early stage, but decreased at the later stage due to the abundance of lichens and mosses. But, the speed of natural succession was so slow that the community-building species was still the first dominant species after 42 years, except that its dominant degree decreased just slightly. However, successive speed and trend were affected by water, vegetation coverage, terrain, time and soil physico-chemical properties as well, especially Mn content in the soil appeared to have a threshold effect.
关键词[WOS]: PRIMARY COLONIZATION ; CRUSTS ; AREA
语种: 英语
WOS记录号: WOS:000184913500006
ISSN号: 0577-7496
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9664
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.NW Normal Univ, Coll Life Sci, Lanzhou 730070, Peoples R China

Recommended Citation:
HU Chunxiang; LIU Yongding.Primary succession of algal community structure in desert soil,ACTA BOTANICA SINICA,2003,45(8):917-924
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