CAJ | 학술논문

2008年每月小潮日原位定期向闽江河口鳝鱼滩咸草 (Cyperus malaccensis)潮汐湿地试验样地施加25,50,100 kg SO_4~(2-)-S/(hm~2·a)的硫酸钠溶液,探讨模拟SO_4~(2-)酸沉降对河口潮汐湿地甲烷排放通量的影响.结果表明,SO_4~(2-)酸沉降对于河口潮汐湿地甲烷排放通量基本无抑制作用.添加SO_4~(2-)室内厌氧培养试验结果显示,虽然SO_4~(2-)输入对湿地土壤CH_4产生量具有一定的抑制作用,但相对对照组,下降幅度仅为8.5%～15.4%.室内添加甲烷产生基质的厌氧培养试验结果表明,非竞争性途径甲烷产生基质(甲醇和三甲胺)的添加可刺激并增加土壤的甲烷产生量,解释了原位施加SO_4~(2-)对于河口潮汐湿地甲烷排放通量的基本无抑制作用的试验结果.
2008년매월소조일원위정기향민강하구선어탄함초 (Cyperus malaccensis)조석습지시험양지시가25,50,100 kg SO_4~(2-)-S/(hm~2·a)적류산납용액,탐토모의SO_4~(2-)산침강대하구조석습지갑완배방통량적영향.결과표명,SO_4~(2-)산침강대우하구조석습지갑완배방통량기본무억제작용.첨가SO_4~(2-)실내염양배양시험결과현시,수연SO_4~(2-)수입대습지토양CH_4산생량구유일정적억제작용,단상대대조조,하강폭도부위8.5%～15.4%.실내첨가갑완산생기질적염양배양시험결과표명,비경쟁성도경갑완산생기질(갑순화삼갑알)적첨가가자격병증가토양적갑완산생량,해석료원위시가SO_4~(2-)대우하구조석습지갑완배방통량적기본무억제작용적시험결과.
In order to examine the effects of simulated sulfate deposition on methane emissions in estuary wetlands， monthly pulses of dissolved Na_2SO_4 were applied to the Cpyerus malaccensis wetland on the neap dates in the Min River estuary over nine months in doses of 25，50，100 kg SO_4~(2-)-S/ (hm~2·a).There was no suppression in most months，only in fewer months，there was a weak suppression.A suppressive effect on methane production amount was observed in the simulated SO_4~(2-) addition in laboratory anaerobic incubation experiment，however，the suppression percentage was only between 8.5% to 15.4 % ralative to control treatment.The adding of non-competitive methane production substrates (methanol and trimethylamine) increased methane production amount in laboratory anaerobic incubation experiment，which would explain the conclusion that simulated SO_4~(2-) deposition in situ had no suppression on methane emission in estuary wetlands.