CAJ | 학술논문

于2013年对福州、建瓯和武夷山三地的雨水进行连续收集, 测定其pH值及NH4+ -N、 NO3- -N、 TN、 SO2-4 -S质量浓度, 计算三地大气氮、硫湿沉降通量并揭示其时空动态变化特征. 三地总降雨量分别为1 188. 0 mm、 1 451. 1 mm、 2 423. 4 mm, 平均降水量为1 687. 5 mm. 三地的中性的降水 ( 5. 6 <pH <7. 0 ) 分别占65. 5%、 15. 5%、 14. 4%, 弱酸性降雨(4. 5<pH<5. 6), 分别占全年降雨的34. 5%、 84. 5%、 85. 6%. 因此福州以中性降雨为主、建瓯和武夷山以弱酸性降雨为主. 三地雨水中TN浓度为1. 17、 1. 02、 0. 74 mg · L-1 , 平均0. 98 mg·L-1 , SO2-4 -S浓度为3. 78、 3. 83、 3. 93 mg·L-1 , 平均3. 85 mg·L-1. 三地年氮湿沉降总量 (FN) 为15. 20、 14. 79、 17. 88 kg·hm-2·a-1, 平均15. 96 kg·hm-2·a-1, 武夷山>福州>建瓯. 三地氮湿沉降以无机氮沉降为主, 且NH4+ -N较多. 硫沉降总量占氮、硫沉降总量的百分比分别为63. 67%, 69. 31%, 75. 77%, 表明大气湿沉降是以SO2-4 -S为主.三地大气湿沉降NH4+ -N、 NO3- -N、 TN沉降通量的月变化趋势基本相似, 均在3、 4月份出现峰值, 三地大气SO2-4 -S沉降通量月变化差异较大, 峰值分别出现在6月、 4月、 5月, 可能与降雨强度和频次对氮、硫沉降浓度的影响有关.
우2013년대복주、 건구화무이산삼지적우수진행련속수집, 측정기pH치급NH4+ -N、 NO3- -N、 TN、 SO2-4 -S질량농도, 계산삼지대기담、 류습침강통량병게시기시공동태변화특정. 삼지총강우량분별위1 188. 0 mm、 1 451. 1 mm、 2 423. 4 mm, 평균강수량위1 687. 5 mm. 삼지적중성적강수 ( 5. 6 <pH <7. 0 ) 분별점65. 5%、 15. 5%、 14. 4%, 약산성강우(4. 5<pH<5. 6), 분별점전년강우적34. 5%、 84. 5%、 85. 6%. 인차복주이중성강우위주、건구화무이산이약산성강우위주. 삼지우수중TN농도위1. 17、 1. 02、 0. 74 mg · L-1 , 평균0. 98 mg·L-1 , SO2-4 -S농도위3. 78、 3. 83、 3. 93 mg·L-1 , 평균3. 85 mg·L-1. 삼지년담습침강총량 (FN) 위15. 20、 14. 79、 17. 88 kg·hm-2·a-1, 평균15. 96 kg·hm-2·a-1, 무이산>복주>건구. 삼지담습침강이무궤담침강위주, 차NH4+ -N교다. 류침강총량점담、 류침강총량적백분비분별위63. 67%, 69. 31%, 75. 77%, 표명대기습침강시이SO2-4 -S위주.삼지대기습침강NH4+ -N、 NO3- -N、 TN침강통량적월변화추세기본상사, 균재3、 4월빈출현봉치, 삼지대기SO2-4 -S침강통량월변화차이교대, 봉치분별출현재6월、 4월、 5월, 가능여강우강도화빈차대담、 류침강농도적영향유관.
Rainfall samples were collected in 2013 by automatic samplers of rainfall and settling parti- cle ( ASP-B, China) for Fuzhou, Jian′ou and Wuyishan in Fujian province, meanwhile pH values,ρ( NH4+ -N) , ρ ( ( NO3- -N) , ρ ( TN) , ρ ( SO2-4 -S) were analyzed, and atmospheric nitrogen and sulphur deposition fluxes and change patterns were investigated. In the three areas, the total rain-fall is respectively 1 188. 0 mm, 1 451. 1 mm and 2 423. 4 mm, with their average as 1 687. 5 mm;the yearly averaged rainwater pH values are 5. 80, 5. 37 and 5. 27. Neutral rainfall (5. 6<pH<7. 0) accounted for 65. 5%, 15. 5%, 14. 4% of the total and weak acid rainfall (4. 5<pH< 5. 6) accoun-ted for 34. 5%, 84. 5%, 85. 6%. These results indicated that Fuzhou was dominated by neutral rain-fall, Jian'ou and Wuyi Mountains by weak acid rain. In the three areas, rainwater TN concentrations were 1. 17, 1. 02, 0. 74 mg·L-1 with an average of 0. 98 mg·L-1;SO2-4 -S concentrations, 3. 78, 3. 83, 3. 93 mg·L-1 with an average of 3. 85 mg·L-1 . Total nitrogen in wet deposition ( FN) was 15. 20, 14. 79, 17. 88 kg·hm-2 ·a-1 with an average of 15. 96 kg·hm-2 ·a-1 . Nitrogen wet depo-sition in the areas was dominated by inorganic nitrogen and with slightly more NH4+ -N than NO3- -N; sulfur deposition took up 63. 67%, 69. 31%, 75. 77% in total nitrogen plus sulfur deposition, suggested that atmospheric wet deposition was dominated by SO2-4 -S. While atmospheric wet deposi-tion NH4+ -N, NO3- -N and TN in the three areas had similar monthly variations which all peaked in March and April, monthly variation in atmospheric SO2-4 -S deposition was large among the three are-as:the peak occurred in June, April and May, which may be explained from the influence of rainfall intensity and frequency on the concentration of nitrogen, sulfur deposition.