青海湖区大型底栖动物群落结构与空间分布格局
STRUTURE AND SPATIAL DISTRIBUTION PATTERNS OF MACROZOOBENTHOS IN QINGHAI LAKE AREA
查看参考文献40篇
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文摘
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为了解青海湖大型底栖动物的群落结构特征、空间分布格局及关键驱动力,于2011-2012年分4次对青海湖区主体湖、3个子湖和5条入湖河流进行了系统调查。共采集到底栖动物28个分类单元,隶属于3门5纲15科,主体湖区、咸水和淡水子湖及入湖河流分布有9、5、9和15种; 它们的密度分别为455.8、1562.7、741.3和331.2 ind./m~2; 生物量为1.18、3.70、2.75和4.53 g/m~2。优势度分析显示,喜盐摇蚊为主体湖区绝对优势种(占总密度的83.32%)。Surfer模拟显示,主体湖区东南部沿岸带的密度和生物量最高,湖心区最低; 高峰值主要出现在布哈河、菜挤河等大型河流入湖的河口附近。CCA分析表明: 青海湖区大型底栖动物的分布主要受水体pH、水深、总氮和盐度等环境因子的驱动。 |
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其他语种文摘
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To study macrozoobenthos community structures, distributions and key underlying drive forces of the Qinghai Lake (QL), one of typical saline lakes in Tibetan Plateau, the samples of benthic animals were taken via four different times during 2011-2012 from QL area, including main body (MB), 3 adjacent lakes (ALs) and 5 inflowing rivers (IRs). We identified 28 taxa: 9 in MB, 5 in 2 saline ALs, 9 in 1 freshwater AL, and 15 in IRs. The mean density of 4 types of water bodies were 455.8, 1562.7, 741.3, and 331.2 ind./m~2, respectively. Biomass of these 4 different water bodies were 1.18, 3.70, 2.75, and 4.53 g/m~2 respectively. Chiroinomus salinarius was the major species (83.32% of the total abundance) in MB. The general spatial distribution pattern was supported by the Surfer Model, indicating that the highest value of macrozoobenthos abundance and biomass occurred in the southeast littoral zone of MB, especially in the sites near estuaries of IRs (e.g., Buha, Caiji and Quanji Rivers), and that the lowest value was in the profundal zone of MB. The CCA analysis showed that pH, water depth, total nitrogen, and salinity were the key environmental factors to affect macrozoobenthos community variance. |
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来源
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水生生物学报
,2014,38(5):819-827 【核心库】
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关键词
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大型底栖动物
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空间格局
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青海湖
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多因子分析
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地址
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1.
中国科学院水生生物研究所, 武汉, 430072
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青海湖国家级自然保护区管理局, 西宁, 810008
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3207 |
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学科
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普通生物学 |
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基金
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国家科技基础条件平台重点项目"青海湖综合研究专题数据库"
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文献收藏号
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CSCD:5251789
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