Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)
文献类型：期刊论文
| 作者 | Lan, Shubin1,2; Wu, Li1,2; Zhang, Delu1,3; Hu, Chunxiang1 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2012 |
| 卷号 | 65期号:1页码:77-88 |
| 关键词 | Biological soil crusts Succession Vertical stratification Cementing Phototrophic organisms |
| ISSN号 | 1866-6280 |
| 通讯作者 | Hu, CX (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | In order to investigate succession of biological soil crusts (BSCs) and their microstructure variability, we conducted this work in Shapotou revegetation region at the southeast edge of Tengger Deser. The results showed that BSCs generally succeeded as a pathway of "Algae crusts, algae-lichen crusts, lichen crusts, lichen-moss crusts and moss crusts". Occasionally mosses directly occurred on algae crusts, and BSCs succeeded from algae crusts to moss crusts. Crust vertical stratification was a common phenomenon, from top to bottom an inorganic layer, algaedense layer and algae-sparse layer were divided in algae crusts; a thallus layer, rhizoid layer and sub-rhizoid layer in lichen crusts; a "stem-leaf" layer, rhizoid layer and sub-rhizoid layer in moss crusts, respectively. The main crust binding organisms varied from filamental cyanobacteria (dominated by Microcoleus) in algae crusts to lichen rhizoids, free-living cyanobacterial filaments and fungal hyphaes in lichen crusts, and to moss rhizoids and fungal hyphaes in moss crusts. The dominant phototrophic organisms varied from Microcoleus (algae) in algae crusts to Collema (lichens) in lichen crusts, and to Bryum (or Didymodon and Tortula; mosses) in moss crusts. Total phototrophic biomass increased while the free-living algal biomass decreased with the succession of BSCs. In addition, exopolysaccharides and fine particles accumulated in the course of development and succession of BSCs, all of which lead to a gradual increase in crust thickness and porosity, while decrease in the bulk density. |
| 英文摘要 | In order to investigate succession of biological soil crusts (BSCs) and their microstructure variability, we conducted this work in Shapotou revegetation region at the southeast edge of Tengger Deser. The results showed that BSCs generally succeeded as a pathway of "Algae crusts, algae-lichen crusts, lichen crusts, lichen-moss crusts and moss crusts". Occasionally mosses directly occurred on algae crusts, and BSCs succeeded from algae crusts to moss crusts. Crust vertical stratification was a common phenomenon, from top to bottom an inorganic layer, algaedense layer and algae-sparse layer were divided in algae crusts; a thallus layer, rhizoid layer and sub-rhizoid layer in lichen crusts; a "stem-leaf" layer, rhizoid layer and sub-rhizoid layer in moss crusts, respectively. The main crust binding organisms varied from filamental cyanobacteria (dominated by Microcoleus) in algae crusts to lichen rhizoids, free-living cyanobacterial filaments and fungal hyphaes in lichen crusts, and to moss rhizoids and fungal hyphaes in moss crusts. The dominant phototrophic organisms varied from Microcoleus (algae) in algae crusts to Collema (lichens) in lichen crusts, and to Bryum (or Didymodon and Tortula; mosses) in moss crusts. Total phototrophic biomass increased while the free-living algal biomass decreased with the succession of BSCs. In addition, exopolysaccharides and fine particles accumulated in the course of development and succession of BSCs, all of which lead to a gradual increase in crust thickness and porosity, while decrease in the bulk density. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | WESTERN NEGEV-DESERT ; TENGGER DESERT ; ALGAL CRUSTS ; NORTHERN CHINA ; GURBANTUNGGUT DESERT ; MICROBIOTIC CRUSTS ; NORTHWESTERN CHINA ; NITROGEN-FIXATION ; COLORADO PLATEAU ; CO2 EXCHANGE |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China[30870470]; National Principal Expert Program[2009ZX07106-001-003]; National Basic Research Programs of China[2008CB418001]; Wuhan Science and Technology Bureau; Inner Mongolia Planning Committee on high-tech industrialization |
| 语种 | 英语 |
| WOS记录号 | WOS:000298800300008 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/16781]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lan, Shubin,Wu, Li,Zhang, Delu,et al. Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)[J]. ENVIRONMENTAL EARTH SCIENCES,2012,65(1):77-88. |
| APA | Lan, Shubin,Wu, Li,Zhang, Delu,&Hu, Chunxiang.(2012).Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China).ENVIRONMENTAL EARTH SCIENCES,65(1),77-88. |
| MLA | Lan, Shubin,et al."Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)".ENVIRONMENTAL EARTH SCIENCES 65.1(2012):77-88. |
入库方式： OAI收割
来源：水生生物研究所
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