| 摘要: |
| 为科学评估河流修复效果，研究修复河流中底栖动物物种多样性和生态功能恢复特征，以浙江省浦江县浦阳江干流为研究对象，分别对2个近自然河段、2个城区修复河段和3个郊区修复河段在修复后1，3，4和5年的水质和底栖动物恢复状况进行调查研究。采用广义最小二乘法（GLS）模型探索底栖动物物种多样性（总物种丰富度、EPT丰富度和Shannon Wiener多样性指数）和功能多样性［功能丰富度、功能均匀度和Rao的二次熵指数（RaoQ）］与恢复年份和修复河段类型的相关性。结果表明，修复后河流的NH3-N和TP浓度显著低于修复前（p<0.001），修复河段和整个调查河段的底栖动物物种多样性和功能多样性总体上随修复年份的增加呈上升趋势。GLS模型分析结果表明，相对于修复河段类型，修复年份对河流修复效果起着更为重要的作用，此外，郊区河段对修复后RaoQ功能多样性指数的改变作用显著（p<0.001）。提出，修复河段底栖动物多样性的恢复与恢复年份和河段受到的干扰类型密切相关。 |
| 关键词: 底栖动物 河流恢复 物种多样性 功能多样性 广义最小二乘法 浦阳江 |
| DOI： |
| 分类号:X513;X820.4 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目（41771052） |
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| A Study on Recovery of Macroinvertebrate Species Diversity and Ecological Function in Puyangjiang River, Zhejiang Province |
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SHENG Tian-jin，EVANCE MBAO，WU Cong，ZHENG Shuai-shuai，XU Min，WANG Bei-xin1,2
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1. College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China;2.Pujiang Environmental Monitoring Center, Jinhua, Zhejiang 322200, China
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| Abstract: |
| Puyangjiang river, which locates in Zhejiang Province, was chosen as research object to scientifically evaluate the effect of river restoration, and to study macroinvertebrates species diversity and ecological function restoration characteristics. The research focused on the water quality and the restoration status of benthos of the surveyed reaches, including 2 near-natural reaches, 2 restored reaches in urban area and 3 restored reaches in rural area, and 1years, 3 years, 4 years and 5 years later after the involved sections were restored. Generalized least squares (GLS) model was adopted to study how the Benthic animal species diversity (total species richness, EPT richness and Shannon Wiener diversity) and functional diversity indices (functional richness, functional evenness and Rao’s quadratic entropy index) is correlated with recovery years and the types of restored reach. Our results revealed the concentration of NH3-N and TP after restoration was significantly improved (p<0.001) and the species diversity and functional diversity of benthic communities enhanced in the restored reaches and the whole surveyed stream segment with increase of restoration years. Moreover, GLS model demonstrated that the years of restoration played a more important role than the types of restoration in the effect of river restoration, and suburban reach played a significant and positive role in RaoQ (p< 0.001). Our study indicates the restoration years and types of disturbance are two important factors that affect recovery of macroinvertebrate species diversity and functional diversity in restored reaches. |
| Key words: Benthic macroinvertebrate Stream restoration Species diversity Functional diversity GLS Puyangjiang River |
