| 引用本文: | 喻曾曾,和雅静,吴俊燕,赵永晶,崔永德.武汉东湖底栖动物多样性分布的影响因素及历史变化.湖泊科学,2025,37(1):204-214. DOI:10.18307/2025.0134 |
| Yu Zengzeng,He Yajing,Wu Junyan,Zhao Yongjing,Cui Yongde.Distribution of zoobenthos diversity in the Lake Donghu (Wuhan): Driving factors and historical changes. J. Lake Sci.2025,37(1):204-214. DOI:10.18307/2025.0134 |
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| 摘要: |
| 探究城市湖泊物种和功能多样性分布及其历史变化有助于了解人类干扰对生态系统的影响。本研究于2020—2021年对武汉东湖不同湖区的底栖动物进行3次季节性调查，并搜集了1970—2020年文献中的历史数据，就底栖动物物种、功能和系统发育多样性的空间分布和历史变化进行了比较，通过获取2000、2010及2020年东湖湖滨带1 km缓冲区的不同土地利用方式占比变化，分析了底栖动物多样性与环境因子之间的相关性。结果表明：调查共记录底栖动物97属种，团湖总种类数最高，后湖功能丰富度最高，功能均匀度在庙湖最高，在菱角湖最低，系统发育的分类多样性指数在团湖最高，分类差异指数在庙湖最高。总物种数与总氮、总磷呈负相关，耐污种种类数与总磷呈负相关，功能均匀度与耕地占比呈正相关，功能丰富度与总氮、总磷呈负相关，分类多样性指数与总氮、总磷呈负相关。结合历史数据，1970s—2020s水生昆虫占比呈现先下降后上升的趋势，到2010s底栖动物有个体小型化的趋势，后有所恢复。 |
| 关键词: 底栖动物 功能多样性 土地利用 历史变化 东湖 |
| DOI：10.18307/2025.0134 |
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| 基金项目:国家重点研发计划项目（2021YFC3200103）；湖北省重点研发计划项目（2022BCA072）；武汉市市政建设集团科技计划项目（wszky202014）联合资助 |
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| Distribution of zoobenthos diversity in the Lake Donghu (Wuhan): Driving factors and historical changes |
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Yu Zengzeng1，2，He Yajing1，Wu Junyan1，Zhao Yongjing1，Cui Yongde1
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1.Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072 , P.R.China ；2.College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049 , P.R.China
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| Abstract: |
| Exploring the distribution and their historical changes of taxonomic and functional diversity in urban lakes improved our understanding on the effects of human disturbances on ecosystems. The Lake Donghu is a medium-sized shallow lake in the middle reaches of the Yangtze River, located in the eastern part of Wuchang District, Wuhan City. It was a river-connected lake formed by natural siltation of the Yangtze River on the basis of the tectonic movement. To understand the historical changes of its zoobenthic taxonomic and functional diversity, this study conducted three seasonal surveys of zoobenthos in Lakes Guozheng, Tangling, Hou, Tuan, Lingjiao, Yujia and Miao during 2020-2021, and collected historical data from previous literatures and books during 1970-2020. We compared the distribution and historical changes of taxonomic, functional and phylogenetic diversity. By obtaining the proportions of different land use types in 1 km buffer zone in 2000, 2010 and 2020, we analyzed the correlations between zoobenthic diversity and environmental factors. The results showed that 97 taxa of zoobenthos were identified with the highest number of taxa in Lake Tuan. The functional diversity of zoobenthos was the highest in Lake Hou, and the functional evenness was the highest and the lowest in Lake Miao and Lake Lingjiao, respectively. For phylogenetic diversity, the taxonomic diversity index was the highest in Lake Tuan, and the taxonomic distinctness index was the highest in Lake Miao. The total number of taxa was negatively correlated with total nitrogen and total phosphorus. The number of pollution-tolerant species was negatively correlated with total phosphorus. The functional evenness was positively correlated with the proportion of cultivated land. The functional richness was negatively correlated with total nitrogen and total phosphorus. The taxonomic diversity index was negatively correlated with total nitrogen and total phosphorus. Combined with historical data from 1970s to 2020s, aquatic insects showed a trend of decreasing first and then increasing. The groups of zoobenthos showed a trend of individual miniaturization in the 2010s, and then recovered. |
| Key words: Zoobenthos functional diversity land use historical change Lake Donghu |
