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Effect of desert soil algae on the stabilization of fine sands
文献类型：期刊论文
| 作者 | Hu, CX; Liu, YD; Song, LR; Zhang, DK |
| 刊名 | JOURNAL OF APPLIED PHYCOLOGY
 |
| 出版日期 | 2002-08-01 |
| 卷号 | 14期号:4页码:281-292 |
| 关键词 | algal crust crust cohesion desert soil algae microbial crust sand stability sand wind tunnel wind erosion |
| ISSN号 | 0921-8971 |
| 通讯作者 | Liu, YD, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | Four filamentous cyanobacteria, Microcoleus vaginatus, Phormidium tenue, Scytonema javanicum (Kutz.) and Nostoc sp., and a single-celled green alga, Desmococcus olivaceus, all isolated from Shapotou (Ningxia Hui Autonomous Region of China), were batch cultured and inoculated onto unconsolidated sand in greenhouse and field experiments. Their ability to reduce wind erosion in sands was quantified by using a wind tunnel laboratory. The major factors related to cohesion of algal crusts, such as biomass, species, species combinations, bioactivity, niche, growth phase of algae, moisture, thickness of the crusts, dust accretion (including dust content and manner of dust added) and other cryptogams (lichens, fungi and mosses) were studied. The best of the five species were M. vaginatus and P. tenue, while the best mix was a blend of 80% M. vaginatus and 5% each of P. tenue, S. javanicum, Nostoc sp. and D. olivaceus. The threshold friction velocity was significantly increased by the presence of all of the cyanobacterial species, while the threshold impact velocity was notably increased only by the filamentous species. Thick crusts were less easily eroded than thin crusts, while biomass was more effective than thickness. Dust was incorporated best into Microcoleus crust when added in small amounts over time, and appeared to increase growth of the cyanobacterium as well as strengthen the cohesion of the crust. Microbial crust cohesion was mainly attributed to algal aggregation, while lichens, fungi and mosses affected more the soil structure and physico-chemical properties. |
| 英文摘要 | Four filamentous cyanobacteria, Microcoleus vaginatus, Phormidium tenue, Scytonema javanicum (Kutz.) and Nostoc sp., and a single-celled green alga, Desmococcus olivaceus, all isolated from Shapotou (Ningxia Hui Autonomous Region of China), were batch cultured and inoculated onto unconsolidated sand in greenhouse and field experiments. Their ability to reduce wind erosion in sands was quantified by using a wind tunnel laboratory. The major factors related to cohesion of algal crusts, such as biomass, species, species combinations, bioactivity, niche, growth phase of algae, moisture, thickness of the crusts, dust accretion (including dust content and manner of dust added) and other cryptogams (lichens, fungi and mosses) were studied. The best of the five species were M. vaginatus and P. tenue, while the best mix was a blend of 80% M. vaginatus and 5% each of P. tenue, S. javanicum, Nostoc sp. and D. olivaceus. The threshold friction velocity was significantly increased by the presence of all of the cyanobacterial species, while the threshold impact velocity was notably increased only by the filamentous species. Thick crusts were less easily eroded than thin crusts, while biomass was more effective than thickness. Dust was incorporated best into Microcoleus crust when added in small amounts over time, and appeared to increase growth of the cyanobacterium as well as strengthen the cohesion of the crust. Microbial crust cohesion was mainly attributed to algal aggregation, while lichens, fungi and mosses affected more the soil structure and physico-chemical properties. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Biotechnology & Applied Microbiology; Marine & Freshwater Biology |
| 类目[WOS] | Biotechnology & Applied Microbiology ; Marine & Freshwater Biology |
| 研究领域[WOS] | Biotechnology & Applied Microbiology ; Marine & Freshwater Biology |
| 关键词[WOS] | MICROPHYTIC CRUST INFLUENCE ; NOSTOC CYANOBACTERIA ; CRYPTOGAMIC CRUSTS ; SOUTHEASTERN UTAH ; WIND EROSION ; INOCULATION ; POLYSACCHARIDES ; DISTURBANCE ; STABILITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000179310700006 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/9770]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 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 |
| 推荐引用方式 GB/T 7714 | Hu, CX,Liu, YD,Song, LR,et al. Effect of desert soil algae on the stabilization of fine sands[J]. JOURNAL OF APPLIED PHYCOLOGY,2002,14(4):281-292. |
| APA | Hu, CX,Liu, YD,Song, LR,&Zhang, DK.(2002).Effect of desert soil algae on the stabilization of fine sands.JOURNAL OF APPLIED PHYCOLOGY,14(4),281-292. |
| MLA | Hu, CX,et al."Effect of desert soil algae on the stabilization of fine sands".JOURNAL OF APPLIED PHYCOLOGY 14.4(2002):281-292. |
入库方式： OAI收割
来源：水生生物研究所
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