河流拦截背景下水库氧化亚氮(N2O)排放的研究进展  

Advances in studies on nitrous oxide(N_2O) emission in the reservoirs under the background of river impoundment

作　　者：吕鑫 刘小龙 李军[1,2] 白莉 李思亮[3] 王宝利 汪福顺[4] 王中良 

机构地区：[1]天津师范大学地理与环境科学学院,天津300387 [2]天津师范大学天津市水资源与水环境重点实验室,天津300387 [3]天津大学表层地球系统科学研究院,天津300072 [4]上海大学环境与化学工程学院,上海200444 [5]中国科学院地球化学研究所,环境地球化学国家重点实验室,贵阳550081

出　　处：《生态学杂志》2018年第3期613-623,共11页Chinese Journal of Ecology

基　　金：国家重点研发计划项目(2016YFA0601000)、国家自然科学基金项目(41372373、41302285、41403082、41672351)资助.

摘　　要：大规模筑坝拦截是当前世界河流普遍面临的共同趋势,河流筑坝导致水体温室气体排放的环境效应近年来在全球范围内引起广泛关注,其中河流拦截背景下的水库中氧化亚氮(N_2O)的产生与释放是理解河流-水库体系氮的生物地球化学循环的重要内容,也是评价水库温室气体排放水平的重要依据。然而,当前对水库N_2O产生与排放的研究存在着不足,对其产生机理、释放水平及控制因素的认识依然缺乏系统性。本文归纳总结了国内外有关水库氮循环过程和N_2O排放的研究成果,分析了水库N_2O排放研究趋势及尚未解决的关键问题,以期为准确评估河流筑坝背景下水库N_2O排放提供借鉴。Most of rivers over the world are impounded. The effects of the impoundment on green- house gas emission have attracted much attention in recent years. Studies on production and emis- sion of nitrous oxide （ N2O ） are important for better understanding of nitrogen biogeochemical cycling in reservoirs and impounded rivers and important for assessing the emission fluxes of N2O from reservoirs. However, the knowledge on N2O emissions and related mechanisms is still limi- ted, especially on key processes, emission fluxes, and driving factors. Here, we reviewed the researches on nitrogen biogeochemical cycling and N2O emissions worldwide and proposed future research trends for further research and the unresolved key questions, aiming to accurately evaluate the emission fluxes of N2O in river-reservoir systems under impoundment.

关 键 词：水库 氧化亚氮(N2O) 释放通量 影响因素 

分 类 号：X51[环境科学与工程—环境工程]