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中国西部环境和生态科学研究计划 >
2002年资助项目 >
荒漠地表生物结皮形成机制及其在沙漠化防治中的应用 >
科学论文 >
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http://hdl.handle.net/2239/35228
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| Title: | 不同生态因子对生物结皮中土生绿球藻生长的影响 |
| Other Titles: | Study on the Effect of Different Ecological Factors on the Growth of Chlorococcum humicola in Soil Microbiotic Crust |
| Authors: | Zhang, Bingchang(张丙昌)
Zhao, Jiancheng(赵建成)
Zhang, Yuanming(张元明)
Li, Wenzhai(李文斋)
Zheng, Yunpu(郑云普) |
| Keywords: | 生物结皮(soil microbiotic crust)
土生绿球藻（Chlorococcum humicola）
生态因子(ecological factor)
古尔班通古特沙漠(Gurbantonggut Desert) |
| Issue Date: | May-2007 |
| Publisher: | 《干旱区研究》2007，24（5）：641-646. |
| Abstract: | [中文摘要]：通过对生物结皮中土生绿球藻（Chlorococcum humicola）的分离、纯化及培养,初步探讨了pH、光照强度、温度和3种不同浓度的K＋,Ca^2＋,Mg^2＋等因子对土生绿球藻生长的影响。结果表明：pH和温度对土生绿球藻生长的影响极显著,Ca^2＋,Mg^2＋浓度影响显著,K＋和光照强度影响不显著。最适pH为12,最适温度是25℃,Ca^2＋和Mg^2＋的最适浓度分别为1.77×10^-4mol/L和2.04×10^-5mol/L。其研究结果将为生物结皮的进一步人工培养奠定理论基础。
[英文摘要]： Chlorococcum humicola is a common species, and it can grow not only in humid soil, but also in arid and semiarid desert habitats. In this paper, the effects of pH, illumination intensity, temperature and three different concentrations of K^＋ , Ca^2＋ and Mg^2＋ on the growth of Chlorococcum humicola in soil mierobiotie crusts are studied ture on by separating, purifying and cultivating C. humicola. The results show that the effects of pH and temperature on the growth of C. humicola are extremely significant, that of Ca^2＋ and Mg^2＋ concentrations on the growth of C. humicola are significant, but that of K^＋ concentration and illumination intensity on the growth of C. humicola are not so significant. The results also reveal that alkaline soil is advantageous for the growth of C. humicola, and the biomass of C. humicola growing under the acidic conditions is ten or several ten times lower than that under the alkaline conditions ; the optimal conditions of cultivating C. humicola are at pH of 12, temperature of 25 ℃, and Ca^2＋ and Mg^2＋ concentrations of 1.77 × 10^-4 mol • L^-1 and 2.04 × 10-s mol • L^-1, respectively. The study resuits can be regarded as the theoretic bases in artificially cultivating soil mierobiotie crusts in the further. |
| URI: | http://seekspace.resip.ac.cn/handle/2239/35228 |
| Appears in Collections: | 科学论文
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| 不同生态因子对生物结皮中土生绿球藻生长的影响.pdf | | 324Kb | Adobe PDF | View/Open |
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