外源硫酸盐添加对福州平原稻田甲烷与氧化亚氮排放的影响  

Effects of Exotic Sulfate Addition on Methane and Nitrous Oxide Emissions from Paddy Fields of Fuzhou Plain

作　　者：章宪[1] 马永跃[1,2] 王维奇[1,2] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007 [2]福建师范大学亚热带湿地研究中心,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2014年第4期111-117,共7页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(31000209);福建省自然科学基金资助项目(2014J01119);福建省公益类研究所专项(2011R1037-5);福建师范大学优秀青年骨干教师培养基金(fjsdky2012007)

摘　　要：以福州平原稻田为研究对象，对对照与硫酸盐添加处理稻田甲烷与氧化亚氮排放通量进行了测定与分析．研究结果表明：对照与硫酸盐添加处理稻田甲烷排放通量分别为0．09～16．90和0．02～9．60mg·m^-2·h^-1，平均值分别为3．66和2．81mg·m^-2·h^-1；氧化亚氮排放通量分别为-55．67～63．73和-25．25～51．88μg·m^-2·h^-1，平均值分别为7．71和9．48μg·m^-2·h^-1；温室气体综合增温效应分别为2264．5和1728．47kg·hm^-2（CO2）．硫酸盐的添加降低了稻田甲烷排放通量，增加了氧化亚氮排放通量，但稻田温室气体综合增温效应降低了24％．从水稻产量特征来看，硫酸盐添加处理水稻产量有所增加．因此，硫酸盐添加可作为亚热带稻田温室气体减排的有效方法．Fuzhou plain were take as the study object and the methane and nitrous oxide emission from the control and sulfate addition plots were measured and analyzed. The results showed that methane emissions were 0. 09 - 16.90 and 0. 02 - 9.60mg·m^-2·h^-1, and the averaged values were 3.66 and 2. 81 mg·m^-2·h^-1 from control and sulfate addition plots, respectively. Nitrous oxide emissions were - 55. 67 - 63. 73 and -25.25 ～51.88 μg·m^-2·h^-1, and the averaged values were 7.71 and 9.48μg·m^-2·h^-1, respectively. Comprehensive greenhouse effects were 2 264.5 and 1 728.47 kg·hm^-2（ CO2 ） , respectively. Sulfate addition decreased methane emission and increased nitrous oxide emission, but the comprehensive greenhouse effects were decreased by 24%. Grain yield was increased with the sulfate addition. Thereby, sulfate addition could be considered as an effective method to mitigate greenhouse gases emissions from subtropical paddy fields.

关 键 词：硫酸盐 甲烷 氧化亚氮 综合温室效应 稻田 

分 类 号：X144[环境科学与工程—环境科学]