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面对气候变化和干旱，管理水位对泥炭地出水水质的重要性。

Importance of water level management for peatland outflow water quality in the face of climate change and drought.

机构信息

Division of Water Resources Engineering, Faculty of Engineering, Lund University, P.O. Box 118, 221 00, Lund, Sweden.

School of Science, Engineering and Environment, The University of Salford, Newton Building, M5 4WT, Salford, United Kingdom.

出版信息

Environ Sci Pollut Res Int. 2022 Oct;29(50):75455-75470. doi: 10.1007/s11356-022-20614-2. Epub 2022 Jun 2.

DOI:10.1007/s11356-022-20614-2
PMID:35653024
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9553818/
Abstract

The impact of different climate scenarios, drought, and water level management on the outflow water quality of peatlands has been investigated. A mesocosm experiment has been conducted within climate control chambers to simulate current (2016-2019 real-time) and future representative concentration pathway (RCP) climate scenarios (RCP 2.6, 4.5 and 8.5). To assess the efficiency of a management strategy for improving peatland water quality, water level adjustment was applied to half of the system at the same time for each climate scenario. Furthermore, the mesocosm experienced the 2018 European drought during the simulation years, and the corresponding impact was analyzed. The results of this study revealed a substantial and favorable impact of water level management on water quality of peatlands under different climate scenarios. The effect of water level management was the largest for ammonium (NH-N) and 5-day biochemical oxygen demand (BOD), and the smallest for total phosphorus (TP). Drought had a strong impact on chemical variables, increasing their concentration and deteriorating the water quality of peatland outflow. However, water level management can stabilize the nutrient levels in peatland outflows, particularly during drought and under warmer climate scenarios, thus mitigating the adverse effects of climate change.

摘要

本研究旨在探讨不同气候情景、干旱以及水位管理对泥炭地出水水质的影响。通过在气候控制室内进行中观尺度实验，模拟当前（2016-2019 年实时）和未来具有代表性的浓度途径（RCP）气候情景（RCP 2.6、4.5 和 8.5）。为评估改善泥炭地水质的管理策略的效率，在每个气候情景下，同时对半系统进行水位调整。此外，中观尺度实验在模拟年份经历了 2018 年欧洲干旱，并对其相应的影响进行了分析。研究结果表明，水位管理对不同气候情景下泥炭地水质具有显著的积极影响。水位管理对氨氮（NH-N）和五日生化需氧量（BOD）的影响最大，对总磷（TP）的影响最小。干旱对化学变量有强烈的影响，增加了它们的浓度，从而使泥炭地出水的水质恶化。然而，水位管理可以稳定泥炭地出水中的养分水平，特别是在干旱和更温暖的气候情景下，从而减轻气候变化的不利影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/b0f27b8cff9d/11356_2022_20614_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/5efe19e6fa40/11356_2022_20614_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/a1e9d34095fb/11356_2022_20614_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/7ec6c3f58360/11356_2022_20614_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/0b6fa1b00c6d/11356_2022_20614_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/b0f27b8cff9d/11356_2022_20614_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/5efe19e6fa40/11356_2022_20614_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/a1e9d34095fb/11356_2022_20614_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/7ec6c3f58360/11356_2022_20614_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/0b6fa1b00c6d/11356_2022_20614_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c87/9553818/b0f27b8cff9d/11356_2022_20614_Fig5_HTML.jpg

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