海涂垦区农业汇水河沟甲烷排放研究进展

doi:10.13287/j.1001-9332.202508.035

摘要/Abstract

摘要： 海涂垦区是沿海滩涂通过人工改造的农业种植区域。因土地利用类型的显著变化,区域碳循环模式随之改变。甲烷(CH₄)是具有强增温效应的短寿命温室气体,其排放是加速全球气候变暖的主要诱因之一。农业汇水河沟是海涂垦区的重要组成部分,具有调控区域水盐平衡和物质循环的关键生态功能,受独特水文过程和营养输入的影响,其CH₄排放过程活跃且不容忽视。本文从沉积物及水体CH₄产生、氧化和排放的角度综述了海涂垦区农业汇水河沟中CH₄生物地球化学过程的研究进展及各过程影响因素,并提出未来研究应聚焦于脱盐-返盐过程、藻类生消过程影响下的CH₄产生与氧化过程解析与区域尺度通量准确估算,以期为海涂垦区碳减排调控策略的科学制定提供理论依据。

关键词: 海涂垦区, 农业汇水河沟, 脱盐-返盐过程, 甲烷产生, 甲烷氧化, 甲烷排放

Abstract: Coastal reclamation area is an agricultural region formed by artificial transformation of coastal tidal flats. Changes in land use types would reshape regional carbon cycling patterns. Methane (CH₄) is a short-lived greenhouse gas with a high global warming potential, the emission of which is a key contributor to the accelerated global climate change. As an integral component of coastal reclamation areas, agricultural drainage ditches play a key role in regulating regional water-salt balance and material cycling. As heavily influenced by unique hydrological proce-sses and nutrient inputs, CH₄ emissions from drainage ditches in these areas are active and non-negligible. We reviewed the current progress in CH₄ metabolism within agricultural drainage ditches of coastal reclamation areas, focusing on the processes of CH₄ production, oxidation, emission and influencing factors. Future research should focus on the CH₄ emission mechanisms under the influence of desalination-resalting processes and algal bloom dynamics, as well as accurately estimating regional-scale fluxes. The goal is to provide a scientific foundation for the formulation of carbon mitigation strategies in coastal reclamation areas.

Key words: coastal reclamation area, agricultural drainage ditch, desalination-resalting process, methane production, methane oxidation, methane emission

李耀强, 佘冬立, 杨伟志, 刘祥. 海涂垦区农业汇水河沟甲烷排放研究进展[J]. 应用生态学报, 2025, 36(8): 2552-2562.

LI Yaoqiang, SHE Dongli, YANG Weizhi, LIU Xiang. Research advances in methane emission from agricultural drainage ditch in coastal reclamation area[J]. Chinese Journal of Applied Ecology, 2025, 36(8): 2552-2562.

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