Tradeoffs between nutrient load reductions and greenhouse gas dynamics in constructed agricultural wetlands
造成農業湿地における栄養塩負荷削減と温室効果ガス動態のトレードオフ (AI 翻訳)
Martyn N. Futter, Mike Peacock, Emma E. Lannergård, Joachim Audet, Faruk Djodjic, John Strand, Tong Liu, Pia Geranmayeh
🤖 gxceed AI 要約
日本語
スウェーデンの40の造成農業湿地（池）で3年間の水質・溶存GHG・メタン排出・堆積物特性を測定。流入リンの濃度は溶存メタンと正の相関を示し、栄養塩保持と気候影響のトレードオフが明らかになった。窒素では流入濃度が亜酸化窒素と正の相関を示したが、下流の溶存窒素は低減された。堆積物炭素は他のパラメータと無関係で、炭素隔離を目的とした設計は困難と示唆。
English
Over three years, 40 Swedish constructed agricultural wetlands were monitored for water chemistry, dissolved GHGs, methane emissions, and sediment properties. Inlet phosphorus correlated positively with dissolved methane, revealing a tradeoff between nutrient retention and climate impact. Nitrogen showed a nuanced pattern, with inlet concentrations correlating with nitrous oxide but outflow concentrations lower. Sediment carbon was unrelated to measured parameters, suggesting difficulty in designing wetlands for carbon sequestration.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では農業由来の栄養塩負荷対策として人工湿地の導入が進むが、GHG排出とのトレードオフは十分考慮されていない。本研究成果は、日本の農業環境政策やNBS導入における多面的評価の重要性を示す。
In the global GX context
This study provides empirical evidence on the tradeoffs between nutrient retention and GHG emissions in constructed wetlands, relevant to global NBS and climate mitigation policies. It underscores the need for integrated assessment of ecosystem services in agricultural landscapes.
👥 読者別の含意
🔬研究者:Provides empirical data on nutrient-GHG tradeoffs in constructed wetlands, useful for modeling and design.
🏢実務担当者:Informs wetland design and management decisions, highlighting potential climate tradeoffs.
🏛政策担当者:Relevant for agricultural and environmental policies considering NBS for nutrient management and climate goals.
📄 Abstract（原文）
Abstract Perceived tradeoffs between ecosystem services (ES) delivered by constructed ponds and wetlands in agricultural landscapes may limit their widespread uptake for environmental management. These nature-based solutions (NBS) can mitigate downstream eutrophying effects of agricultural nutrient runoff and contribute to carbon (C) storage. However, they can also be significant greenhouse gas (GHG) sources. Here, we report on water chemistry, dissolved GHG concentrations, total methane (CH4) emissions, and sediment properties measured over three years at 40 Swedish free-surface constructed agricultural wetlands (ponds). Large temporal variations in inlet water chemistry highlighted the influence of seasonality and land management. Inlet phosphorus (P) concentrations were positively correlated with water column dissolved CH4 and sediment P concentrations; a clear tradeoff in nutrient retention vs. climate impact. A more nuanced pattern occurred for nitrogen (N) where inlet concentrations correlated positively with dissolved nitrous oxide (N2O) concentrations. However, these wetlands mitigated downstream dissolved N levels as suggested by lower outflow concentrations. All waterbodies were supersaturated with CO2. Higher CO2 and N2O concentrations occurred during fall/winter than summer. The opposite pattern occurred for CH4 fluxes and dissolved CH4 although relative contributions from ebullition were greater during fall/winter. Sediment C concentrations were unrelated to any measured parameters, suggesting it would be difficult to purposefully design wetlands for C sequestration. Although there are tradeoffs between mitigating downstream eutrophication and climate impacts, this should not preclude the use of constructed free surface wetlands as multifunctional NBS for ES delivery in agricultural landscapes.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1088/1748-9326/ae9492first seen 2026-08-05 06:06:23
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