多植物收获对建造湿地的除和回收的影响

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Shuangtong Lv¹, Shunan Zhang², Miaomiao Zhang²

¹Key Laboratory of Agro-ecological Processes in Subtropical Regions, Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, China; University of Chinese Academy of Sciences, Beijing 100039, China.

|February 26, 2024

概括

在建造湿地 (CWs) 中每90天收获植物,优化氨的去除,并增强营养的回收. 这种低收获频率可以提高溶解氧水平,而不会对总去除产生负面影响.

科学领域:

环境工程环境工程
湿地科学湿地科学
营养素循环循环的过程

背景情况:

在建筑湿地 (CWs) 中采收植物有助于营养恢复,但最佳频率尚不清楚.
过度采摘可以减少植物生物质,影响系统效率.
了解收获对去除和回收的影响对于CW管理至关重要.

研究的目的:

确定最佳的植物收获频率,以消除和CW中的营养回收.
研究不同采集频率对氨 (NH4+-N) 和总 (TN) 清除的影响.
在不同的收获制度下,确定影响除效率的环境因素.

主要方法:

用Myriophyllum aquaticum种植的建筑湿地 (CWs) 经历了三个收获频率:高 (45天),低 (90天) 和没有 (控制).
监测了去除效率 (NH4+-N,TN) 和溶解氧 (DO) 度.
植物营养回收量化基于收获的生物质.

主要成果:

在所有处理方法中,氨 (NH4+-N) 清除效率都很高 (88.3%90.8%).
收获频率低 (90天),NH4+-N去除和DO度略有增加,但没有影响TN去除效率 (61.2%67.4%).
在高和低收获频率下,与没有收获相比,收获植物的总 (TN) 恢复率是高和低收获频率的9.219.32倍.

结论:

每90天一次的收获频率是Myriophyllum aquaticum在CW中的最佳情况.
这种频率增强了NH4+-N的去除,并最大限度地从系统中恢复.
优化收获策略是建设湿地的有效营养管理的关键.

关键词:

建造的湿地建造的湿地基因的丰富性基因的丰富性的回收的回收移除的方法移除的方法植物收获植物收获

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