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通过生态沟湿地系统,评估从大米-鱼的田中去除营养的性能

Jun R Yang^1,2, Shihao Tang¹, Yiqi Li¹

¹College of Agriculture, Yangtze University, Jingzhou, 434025, China.

|October 10, 2024

概括

生态沟湿地系统有效地从水田中去除和等农业营养物质. 沟的效率高于湿地,在较低的排放率下进行最佳清除.

科学领域:

环境科学环境科学
农业工程农业工程
生态生态学生态生态学

背景情况:

农业排水,特别是来自大米-鱼系统的排水,是水生生态系统污染的主要来源,原因是高和负载.
众所周知,生态沟和湿地会去除营养物质,但生态沟湿地系统 (EDWS) 的综合影响尚未得到充分研究.

研究的目的:

调查 EDWS 的物理化学条件和营养去除效率,以处理来自大米-鱼田的农业排放.
评估关键营养素的去除速度,包括总,,酸,总和可溶性反应.

主要方法:

在整个水生长周期中,实地实验监测物理化学参数 (水温,溶氧,pH,TSS) 和营养度.
在生态沟和湿地内单独评估营养去除效率,以及集成的EDWS.
分析液压保留时间和水排放速度对营养物质去除的影响.

主要成果:

生态沟的营养去除效率高于EDWS内的湿地.
对TN,NH4-N,NO3-N,TP和SRP的平均总去除效率约为37-40%,与米生长阶段相关的变化.
较低的排水率和较长的液压保留时间与更高的营养物质去除效率相关.

结论:

EDWS有效地净化了来自大米-鱼田的营养物质排放,沟起到了至关重要的作用.
水排放,影响营养物质负载和TSS是影响EDWS性能的重要因素.
EDWS提出了一种可持续的方法来管理农业营养污染.

关键词:

生态沟湿地系统液压保留时间是什么?影响营养物质负载.营养物质去除效率的效率养殖大米-鱼养殖

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