生态环境学报
生態環境學報
생태배경학보
Ecology and Environment Sciences
2015年
8期
1336-1341
,共6页
张硕%王功芹%朱珠%张虎
張碩%王功芹%硃珠%張虎
장석%왕공근%주주%장호
氮%赋存形态%表层沉积物%海州湾%季节变化
氮%賦存形態%錶層沉積物%海州灣%季節變化
담%부존형태%표층침적물%해주만%계절변화
nitrogen%forms%surface sediments%Haizhou Bay%seasonal variation
为了解海州湾表层沉积物中氮形态的季节变化特征,于2014年春季(5月)、夏季(8月)、秋季(10月)采集沉积物,采用连续分级提取法,测定了离子交换态氮(IEF-N)、弱酸可浸取态氮(WAEF-N)、强碱可浸取态氮(SAEF-N)及强氧化剂可浸取态氮(SOEF-N)4种可转化态氮(TTN)的含量,研究了其季节性赋存特征,同时结合表层沉积物中w(TN)的季节变化特征,探讨各形态氮之间的相关关系.结果表明:各形态氮含量的季节性排序不同,春季, w(SOEF-N)>w(IEF-N)>w(WAEF-N)>w(SAEF-N);夏季,w(IEF-N)>w(SOEF-N)>w(WAEF-N)>w(WAEF-N);秋季,w(SOEF-N)>w(IEF-N)>w(SAEF-N)>w(WAEF-N);各组分氮形态均存在季节性变化,TN、TTN、SAEF-N、SOEF-N表现为秋季高而春夏季低的分布趋势,IEF-N、WAEF-N 则是夏季高春秋季低的变化特征;相关分析表明,春、秋季 w(TTN)与 w(SOEF-N)呈显著正相关,夏季w(TTN)与w(IEF-N)呈显著正相关.表层沉积物氮形态的季节性变化研究,为海洋水环境生态安全评估和氮营养盐释放的评价研究提供参考.
為瞭解海州灣錶層沉積物中氮形態的季節變化特徵,于2014年春季(5月)、夏季(8月)、鞦季(10月)採集沉積物,採用連續分級提取法,測定瞭離子交換態氮(IEF-N)、弱痠可浸取態氮(WAEF-N)、彊堿可浸取態氮(SAEF-N)及彊氧化劑可浸取態氮(SOEF-N)4種可轉化態氮(TTN)的含量,研究瞭其季節性賦存特徵,同時結閤錶層沉積物中w(TN)的季節變化特徵,探討各形態氮之間的相關關繫.結果錶明:各形態氮含量的季節性排序不同,春季, w(SOEF-N)>w(IEF-N)>w(WAEF-N)>w(SAEF-N);夏季,w(IEF-N)>w(SOEF-N)>w(WAEF-N)>w(WAEF-N);鞦季,w(SOEF-N)>w(IEF-N)>w(SAEF-N)>w(WAEF-N);各組分氮形態均存在季節性變化,TN、TTN、SAEF-N、SOEF-N錶現為鞦季高而春夏季低的分佈趨勢,IEF-N、WAEF-N 則是夏季高春鞦季低的變化特徵;相關分析錶明,春、鞦季 w(TTN)與 w(SOEF-N)呈顯著正相關,夏季w(TTN)與w(IEF-N)呈顯著正相關.錶層沉積物氮形態的季節性變化研究,為海洋水環境生態安全評估和氮營養鹽釋放的評價研究提供參攷.
위료해해주만표층침적물중담형태적계절변화특정,우2014년춘계(5월)、하계(8월)、추계(10월)채집침적물,채용련속분급제취법,측정료리자교환태담(IEF-N)、약산가침취태담(WAEF-N)、강감가침취태담(SAEF-N)급강양화제가침취태담(SOEF-N)4충가전화태담(TTN)적함량,연구료기계절성부존특정,동시결합표층침적물중w(TN)적계절변화특정,탐토각형태담지간적상관관계.결과표명:각형태담함량적계절성배서불동,춘계, w(SOEF-N)>w(IEF-N)>w(WAEF-N)>w(SAEF-N);하계,w(IEF-N)>w(SOEF-N)>w(WAEF-N)>w(WAEF-N);추계,w(SOEF-N)>w(IEF-N)>w(SAEF-N)>w(WAEF-N);각조분담형태균존재계절성변화,TN、TTN、SAEF-N、SOEF-N표현위추계고이춘하계저적분포추세,IEF-N、WAEF-N 칙시하계고춘추계저적변화특정;상관분석표명,춘、추계 w(TTN)여 w(SOEF-N)정현저정상관,하계w(TTN)여w(IEF-N)정현저정상관.표층침적물담형태적계절성변화연구,위해양수배경생태안전평고화담영양염석방적평개연구제공삼고.
To understand the characteristics of seasonal change of nitrogen forms in the surface sediment. This study presented the sequential extracted surface sediment samples collected from Haizhou Bay in May, August and October 2014 that have been analyzed for ion exchangeable form-nitrogen (IEF-N), weak acid extractable form-nitrogen (WAEF-N), strong alkaline extractable form-nitrogen (SAEF-N), strong oxidant extractable form-nitrogen (SOEF-N). Along with the content of TN, the relationship between various forms of nitrogen was discussed. The order of content from highest to lowest in spring isw(SOEF-N), w(IEF-N), w(WAEF-N),w(SAEF-N), summer isw(IEF-N), w(SOEF-N), w(WAEF-N), w(SAEF-N), autumn isw(SOEF-N), w(IEF-N), w(SAEF-N), w(WAEF-N), respectively. The results also show that the concentration of TN, TTN, SAEF-N and SOEF-N are higher in autumn and lower in spring and summer, IEF-N and WAEF-N are lower in spring and autumn and higher in summer. The correlation analysis shows that the concentration of TTNis significantly correlated to SOEF-N in spring, IEF-N in summer, SOEF-N in autumn, respectively. This study about seasonal variation of nitrogen forms in surface sediments provided foundational data for nitrogen release evaluation and marine ecological security evaluation.
