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High Vegetation of Lake Ayakagitma in Bukhara Region and Their Distribution
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作者 Shamsiyev Naim Amonovich Qobilov Aziz Muxtorovich 《American Journal of Plant Sciences》 CAS 2022年第11期1373-1380,共8页
More than 500 lakes are found in Uzbekistan. Ayakagitma Lake is located on the border of the Northern Gijduvon and Shafirkon districts of Bukhara region. This lake was formed in 1985-1986 at the expense of the waters ... More than 500 lakes are found in Uzbekistan. Ayakagitma Lake is located on the border of the Northern Gijduvon and Shafirkon districts of Bukhara region. This lake was formed in 1985-1986 at the expense of the waters of the sewage dump collector. The area of the lake is 8200 hectares, the maximum depth is 35 m, on average 10 - 15 m, the minimum is 3 - 5 meters. The chemical composition of lake water is chloride-sulfate and has a calcareous character. 67 species of high plants belonging to 22 families were found in this area. 17 of these species are found in the water of the lake and 50 species are found around it. Of the most common species, Phragmites communis reach a height of 4.5 - 5.5 meters. Phragmites communis make up the total area of the lake 8 - 10 hectares. 展开更多
关键词 Mesotrophic ZOOPLANKTON Zoobentos Nectobentos bentos DETRITUS Mesophytes Xerophytes Hygrophytes BIOMASS
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一种基于Bento模式的联邦检索系统 被引量:4
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作者 刘伟成 William H.Mischo Mary Schlembach 《图书情报工作》 CSSCI 北大核心 2017年第19期113-121,共9页
[目的 /意义]信息资源发现与传递服务一直是图书馆的核心业务,目前在欧美出现一种新形式即基于Bento模式的联邦检索服务系统,研究其最新发展趋势对完善我国图书馆发现系统有重要参考价值。[方法/过程]通过文献调查、比较研究、案例分析... [目的 /意义]信息资源发现与传递服务一直是图书馆的核心业务,目前在欧美出现一种新形式即基于Bento模式的联邦检索服务系统,研究其最新发展趋势对完善我国图书馆发现系统有重要参考价值。[方法/过程]通过文献调查、比较研究、案例分析等方法,对比国内外发展现状,揭示混合排序的不足和Bento模式的优点,并以美国伊利诺大学香槟分校(UIUC)图书馆为例说明其应用和未来发展趋势。[结果 /结论]实践证明Bento模式更有利于实现从全资源发现向全图书馆发现的转变,检索效果和图书资源利用率均有较大幅度的提升。 展开更多
关键词 资源发现系统 网络级发现服务系统 联邦检索 Bento模式
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