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Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)
Lan, Shubin1,2; Wu, Li1,2; Zhang, Delu1,3; Hu, Chunxiang1; Hu, CX (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2012
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
Volume65Issue:1Pages:77-88
AbstractIn 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.; 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.
SubtypeArticle
KeywordBiological Soil Crusts Succession Vertical Stratification Cementing Phototrophic Organisms
Department[Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Lan, Shubin; Wu, Li] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; [Zhang, Delu] Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China
DOI10.1007/s12665-011-1066-0
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Funding OrganizationNational 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 ; 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 ; 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 ; 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
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000298800300008
WOS KeywordWESTERN NEGEV-DESERT ; TENGGER DESERT ; ALGAL CRUSTS ; NORTHERN CHINA ; GURBANTUNGGUT DESERT ; MICROBIOTIC CRUSTS ; NORTHWESTERN CHINA ; NITROGEN-FIXATION ; COLORADO PLATEAU ; CO2 EXCHANGE
Funding OrganizationNational 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 ; 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 ; 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 ; 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
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16781
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorHu, CX (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.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
Recommended Citation
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,&Hu, CX .(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.
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