长江流域资源与环境 >> 2007, Vol. 16 >> Issue (6): 738-738.

• 自然资源 • 上一篇    下一篇

香溪河附石性大型底栖动物功能摄食类群研究

渠晓东1,2,蔡庆华1*,谢志才1, 唐 涛1, 曹 明1,2,黎道丰1   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-20

RESEARCH OF FUNCTIONAL FEEDING GROUPS OF MACROINVERTEBRATES IN THE STONY HABITAT OF THE XIANGXI RIVER SYSTEM

QU Xiaodong1,2, CAI Qinghua1*, XIE Zhicai1, TANG Tao1, CAO Ming1,2, LI Daofeng1   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-20

摘要:

利用1∶50 000地形图对香溪河进行划分,显示香溪河为一条6级河流。分析包括捕食者(PR)、撕食者(SH)、刮食者(SC)、直接收集者(GC)和过滤收集者(FC)在内的5个主要功能摄食类群的组成,发现香溪河主要摄食类群以直接收集者和刮食者为主。各功能摄食类群的密度和生物量随着河流级别的变化而发生变化,基本趋势为:直接收集者和滤食者的密度和生物量都随着河流级别的增加而增大;撕食者和刮食者的密度和生物量的密度随着河流级别的增加而减小;而捕食者在整个流域内的密度上游小于下游,生物量却是上游大于下游。研究结果表明香溪河在夏季其上游物质来源以附石性藻类生产为主,下游则以异源性细有机颗粒输入为主。此外,功能摄食类群的密度与部分环境因子具有显著的相关性:过滤收集者与Ca2+和河宽相关,收集者与SiO2相关显著,刮食者与海拔和氨氮相关性较高,撕食者与电导和PO4P相关性较高.

关键词: 香溪河, 河流级别, 附石性大型底栖动物, 功能摄食类群

Abstract:

The stream of Xiangxi River system was divided into six orders based on 1〖DK1〗∶50 000 relief maps.A total of fiftythree sampling sites were sampled.The macroinvertebrate communities were divided into five main functional feeding groups,including predators (PR),shredders (SH),scrapers (SC),collectorgatherers (GC) and collectorfilterers (FC).The collectorgatherers and scrapers,which feed on benthic algae,riparian detritus and fine particulate organic matter from the stream bottom,were the main groups in Xiangxi River system.The density and biomass of different functional feeding groups changed in the different stream orders.The GC and FC increased with the rising of stream order,while the SH and SC decreased.The PR density was higher in the downstream and biomass was higher in the upstream.The trend showed that the autochthonous energy dominated in the upstream and the input of allochthonous energy dominated in the downstream.The relationship between density of functional feeding groups and environmental factors was analyzed.Results showed that FC was significantly correlated with the width of river and Ca2+.The GC and SiO2 were highly correlated.The relationship between the SC and the elation and ammonia was significant.And the relationship between the SH and the PO4P and conductivity was also important.

Key words: Xiangxi River system, stream order, macroinvertebrate in the stony habitat, functional feeding groups

[1] 孙婷婷, 唐涛, 申恒伦, 张长群, 孙美琴, 李斌, 蔡庆华. 香溪河流域不同介质中碳、氮、磷的分布特征及相关性研究[J]. 长江流域资源与环境, 2015, 24(05): 853-859.
[2] 王海云. 三峡水库蓄水对香溪河水环境的影响及对策研究[J]. 长江流域资源与环境, 2005, 14(2): 233-237.
[3] 唐 涛,渠晓东,蔡庆华,刘建康. 河流生态系统管理研究——以香溪河为例[J]. 长江流域资源与环境, 2004, 13(6): 594-598.
[4] 江明喜,党海山,黄汉东,陶 勇,金 霞. 三峡库区香溪河流域河岸带种子植物区系研究[J]. 长江流域资源与环境, 2004, 13(2): 178-182.
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