Assessment of macroinvertebrate functional diversity under human disturbance in Nanyang section of Baihe river
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摘要：
分析物种多样性、群落分布和功能多样性之间关系,对于了解生态系统功能,预测生态系统发展方向具有重要作用.本研究以白河南阳段为例,设置5个典型生态采样点,包括上游鸭河大桥和观音寺,流域组成以农田为主,干扰较少;中游泗水河桥流域组成为乡镇,主要受农村生活用水排放影响;下游沙岗和四坝,流经南阳市主城区,主要受城市生活用水排放影响.分别分析评价了5个样点大型底栖动物的物种多样性、功能多样性、群落分布状况以及三者之间关系.结果表明,泗水河桥和四坝受城镇生活用水的影响,水质有了明显的变化.5个样点间物种多样性指数和功能多样性指数未发现显著性差异.但是,通过群落分布排序发现,从上游起点鸭河大桥到下游终点四坝,各个样点的底栖动物群落结构已产生明显差异,鸭河大桥与四坝间的差异最为明显,泗水河桥也显示了与其他样点不同的群落分布特征.香农威纳指数与Rao二次熵指数和功能分散度指数之间密切相关,表明物种多样性的高低可以反映生态系统的生产力和稳定性.因此,对河流生态系统功能进行研究时,群落分布同样重要,它能够反映生态系统的细微变化,为生态系统未来功能的变化方向提供依据.
The relationship among species diversity,functional diversity and community distribution plays an important role in understanding the functions of ecosystems and predicting the direction of ecosystems.Five typical ecological sampling sites were set up in this research,including Yahe Bridge and Guanyin Temple in the upstream,with farmland as the main flow area and less disturbance;Sishui River Bridge in the middle reaches runs through villages and towns,which is obviously affected by rural domestic water;Shagang and Siba in the downstream,which flow through the main urban area of Nanyang City,are mainly affected by urban domestic water.The species diversity,functional diversity,community distribution and the relationship among them were evaluated.The results showed that the Sishui River Bridge and the Siba were affected by urban domestic water,and the water quality had deteriorated significantly.There were no significant differences in species diversity indices and functional diversity indices between five ecological sampling sites.However,according to the ordination of community distribution,the community structure of macroinvertebrate in each sample point had been significantly different from Yahe Bridge in the upstream to the Siba.The difference between Yahe Bridge and Siba was the most obvious,and Sishui River Bridge also showed a different community distribution characteristics.Shannon-Wiener index was closely related to Rao secondary entropy index and functional dispersion index,which indicated that species diversity in this study could reflect the productivity and stability of ecosystems.When studying the function of river ecosystem,community distribution is equally important.It can reflect the subtle changes of ecosystem and suggest the direction of ecosystem function development.
作者：
杨晓明 韩雪梅 梁子安 龚子乐 朱会会 李玉英
Yang Xiaoming;Han Xuemei;Liang Zian;Gong Zile;Zhu Huihui;Li Yuying(School of Life Science and Technology,Nanyang Normal University,Nanyang 473061,China;Collaborative Innovation Center of Water Security for Water Source Region of Middle Route Project of South-North Water Diversion in Henan Province,Nanyang Normal University,Nanyang 473061,China;School of Agricultural Engineering,Nanyang Normal University,Nanyang 473061,China)
机构地区：
南阳师范学院生命科学与技术学院 南阳师范学院南水北调中线水源区水安全河南省协同创新中心 南阳师范学院农业工程学院
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2020年第4期96-102,共7页
基金：
国家自然科学基金(31300442) 清华大学开放研究基金资助项目(klhse-2019-B-04) 河南省教育厅重点项目(18B180020,19B180007) 河南省南水北调中线水源区水生态安全创新型科技团队专项项目(17454).
关键词：
底栖动物 物种多样性 功能多样性 群落分布
macroinvertebrate species diversity functional diversity community distribution
分类号：
Q143 [生物学—生态学] Q146 [生物学—生态学]
