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河流连接和土地利用对平原河流网络生物完整性指数 (IBIs) 的干预

Yufan Lu^1,2,3, Yaoyi Liu^1,2,3, Hong Qin⁴

¹School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China.

Environmental monitoring and assessment

|December 3, 2024

概括

河流连通性对平原河流网络中的水生生物产生重大影响. 形态和水文因素强烈影响生物完整性指数,影响动物浮游生物,周围生物和宏观无脊椎动物不同.

科学领域:

生态生态学生态生态学
环境科学环境科学
淡水生物学淡水生物学

背景情况:

平原河流网络面临着土地使用和改变河流连接的生态干扰.
这些压力因素对水生社区的综合影响往往被忽视.
了解这些影响对于有效的河流管理至关重要.

研究的目的:

评估动物浮游生物,周边生物和盆地宏观无脊椎动物群落对西青浦流域环境因素的反应.
使用生物完整性指数 (IBIs) 探索河流状况的空间变化.
确定河流连接和土地利用对这些IBI的影响路径.

主要方法:

使用了33条河流,用于评估.
计算的生物完整性的动物浮游生物指数 (Z-IBI),生物完整性的周边生物指数 (P-IBI) 和生物完整性的盆地宏观无脊椎动物指数 (B-IBI).
雇佣了斯皮尔曼相关性和部分最小平方回归分析.

主要成果:

生物完整性指数在三个社区之间有所不同,显示了对压力因素的多样性反应.
河流连接参数是影响IBI的主要因素.
形态和水文连接性与B-IBI和P-IBI正相关,但与Z-IBI负相关.

结论:

河流连接性,特别是形态和水文方面,在平原河流网络中塑造生物完整性方面发挥着关键作用.
不同的水生社区对河流连接和土地使用压力因素表现出不同的敏感性.
结果为开发平原河流系统的有针对性的管理策略提供了洞察力.

关键词:

生物完整性的指数.土地使用情况土地使用情况部分最小平方回归分析.平原河网络的平原河.河流连接河流连接

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