河岸碎石饵料对河流的补充特性以及对水流的响应

IF 3.9 2区 环境科学与生态学 Q1 ECOLOGY
Zhuo Chen, Zhengyang Wang, Jingjie Feng, Ran Li, Jieshan Huang, Kefeng Li
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引用次数: 0

摘要

河岸带是河流生态系统中水生和陆生组成部分之间的重要界面。沉积在这里的有机物是水生生物的重要食物来源,因此被称为 "残饵"。水文设施的建设改变了河流的流动节奏,减少了河岸的淹没面积和流速变化的频率,这反过来又对河流的生态稳定性产生了负面影响。鉴于上述原因,了解泥石饵料在河岸的分布特征以及在水流影响下对河流的补给模式至关重要。通过自然取样方法,对有关碎屑的固有物理特性进行了研究,以确定其对碎屑迁移动态的影响。采用密度分离法研究了天然河岸上泥石的分布模式。根据自然调查的结果设计了一个定量实验模型,以分析不同流速下碎片在河道补给水动力结构时的响应特征。结果表明,碎屑分布受背景土壤状况和流动效应的影响。紧邻河岸表面的土层具有较高的补给效应。河岸碎屑补给的主要时期出现在流速开始变化时。此外,流速与进入河道的泥石数量呈正相关。该研究结果为了解当前条件下河岸碎屑饵料的补充情况提供了宝贵的见解,对正在进行水电开发的河流的生态管理具有一定的启示意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Replenishment characteristics of riparian debris baits to rivers and the response to flow
The riparian zone is a crucial interface between the aquatic and terrestrial components of river ecosystems. Organic matter deposited here can serve as an important food source for aquatic organisms, earning it the name of detritus bait. The construction of hydrological facilities has altered the flow rhythms of rivers, reducing the inundated area of banks and the frequency of flow velocity changes, which in turn negatively affects the ecological stability of the river. Given these reasons, it is crucial to understand the distribution characteristics of debris bait on riparian and the recharge pattern to rivers under flow impacts. The physical properties intrinsic to the debris in question were examined in order to ascertain their influence on the dynamics of debris transport through natural sampling methods. The distribution patterns of debris on natural river banks were investigated using density separation. A quantitative experimental model was designed based on the results of natural investigations to analyze the response characteristics of debris in-stream recharge to hydrodynamic structures at different flow velocities. The results indicate that the debris distribution is influenced by the background soil situation and flow effect. The soil layer immediately adjacent to the surface of the bank has a higher recharge effect. The main period for riparian debris recharge occurs at the onset of changes in flow rate. Furthermore, there is a positive correlation between the flow velocity and the quantity of debris entering the river. The findings of this study offer valuable insights into the replenishment of river bank debris bait under the current conditions, with implications for the ecological management of rivers undergoing hydropower development.
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来源期刊
Ecological Engineering
Ecological Engineering 环境科学-工程:环境
CiteScore
8.00
自引率
5.30%
发文量
293
审稿时长
57 days
期刊介绍: Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. The journal is meant for ecologists who, because of their research interests or occupation, are involved in designing, monitoring, or restoring ecosystems, and can serve as a bridge between ecologists and engineers. Specific topics covered in the journal include: habitat reconstruction; ecotechnology; synthetic ecology; bioengineering; restoration ecology; ecology conservation; ecosystem rehabilitation; stream and river restoration; reclamation ecology; non-renewable resource conservation. Descriptions of specific applications of ecological engineering are acceptable only when situated within context of adding novelty to current research and emphasizing ecosystem restoration. We do not accept purely descriptive reports on ecosystem structures (such as vegetation surveys), purely physical assessment of materials that can be used for ecological restoration, small-model studies carried out in the laboratory or greenhouse with artificial (waste)water or crop studies, or case studies on conventional wastewater treatment and eutrophication that do not offer an ecosystem restoration approach within the paper.
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