Emileigh Lucas, Bradley Kennedy, Taylor Roswall, Charles Burgis, Gurpal S. Toor
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The unpredictability of EP leads to greater incidental P losses as appropriately timing nutrient applications is more challenging. Increased soil and air temperatures influence soil microbial communities and P-solubilizing microbes, but their effects on P losses are uncertain. Likewise, eCO<sub>2</sub> may increase plant growth, P demand, and soil P cycling, but its impact on P losses is unclear. Saltwater intrusion caused by sea level rise can further mobilize P in high (legacy) P soils and enhance P loss from land to water.</p><h3>Summary</h3><p>Climate change is likely to increase P losses due primarily to increases in extreme precipitation and saltwater intrusion in coastal areas. These impacts will be geographically variable. 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引用次数: 0
摘要
综述目的从农田到地表水的磷(P)流失是水质恶化的主要原因。我们研究了气候变化对磷的来源和迁移的影响,以及这些影响如何加剧农田土壤向水道的磷流失。极端降水(EP)事件会加速土壤中溶解态和颗粒态磷的迁移,在施用化肥和肥料或干旱之后会加剧这种迁移。EP 的不可预测性导致钾的意外损失增加,因为合理安排养分的施用时间更具挑战性。土壤和空气温度升高会影响土壤微生物群落和钾溶解微生物,但其对钾损失的影响尚不确定。同样,eCO2 可能会增加植物生长、钾需求和土壤钾循环,但其对钾损失的影响尚不明确。海平面上升导致的盐水入侵会进一步调动高(遗留)P 土壤中的 P,并加剧 P 从陆地向水中的流失。这些影响将因地域而异。目前的磷流失模型可以通过纳入气候变化对磷来源和迁移的影响、纳入遗留的磷土壤数据以及考虑遗留的磷土壤造成的磷流失来加以改进。
Climate Change Effects on Phosphorus Loss from Agricultural Land to Water: A Review
Purpose of Review
Phosphorus (P) loss from agricultural land to surface water is a leading cause of water quality deterioration. We reviewed the climate change impacts on sources and transport of P and how they can exacerbate P loss from agricultural soils to waterways.
Recent Findings
The effects of climate change include extreme precipitation events, increased temperature, elevated atmospheric carbon dioxide (eCO2), and saltwater intrusion induced by sea level rise. Extreme precipitation (EP) events cause accelerated transport of dissolved and particulate P from soils, exacerbated after the application of fertilizers and manures or drought. The unpredictability of EP leads to greater incidental P losses as appropriately timing nutrient applications is more challenging. Increased soil and air temperatures influence soil microbial communities and P-solubilizing microbes, but their effects on P losses are uncertain. Likewise, eCO2 may increase plant growth, P demand, and soil P cycling, but its impact on P losses is unclear. Saltwater intrusion caused by sea level rise can further mobilize P in high (legacy) P soils and enhance P loss from land to water.
Summary
Climate change is likely to increase P losses due primarily to increases in extreme precipitation and saltwater intrusion in coastal areas. These impacts will be geographically variable. Current P loss models could be improved by including climate change effects on P sources and transport, the inclusion of legacy P soil data, and accounting for P losses from legacy P soils.
期刊介绍:
Current Pollution Reports provides in-depth review articles contributed by international experts on the most significant developments in the field of environmental pollution.By presenting clear, insightful, balanced reviews that emphasize recently published papers of major importance, the journal elucidates current and emerging approaches to identification, characterization, treatment, management of pollutants and much more.