CAJ | 학술논문

于2010年12月-2011年9月，2012年9月-2013年6月按季度采样对长江口北支水域氮、磷营养盐的季度变化规律、形态组成以及环境因子间相互关系进行了分析。结果显示溶解性无机氮存在形态主要是硝酸盐，占90％以上，浓度变化规律为夏秋高于春冬两季；溶解性无机氮、总氮峰值分别为3.99 mg/L及1.70 mg/L，均出现在2011年夏季，该现象与当年洪期长江流域连日降雨有关。长江径流所携带营养盐是导致北支无机氮、总磷浓度变化的主要原因。对理化因子进行相关性分析表明，盐度、pH值是营养盐最主要的限制因子。
우2010년12월-2011년9월，2012년9월-2013년6월안계도채양대장강구북지수역담、린영양염적계도변화규률、형태조성이급배경인자간상호관계진행료분석。결과현시용해성무궤담존재형태주요시초산염，점90％이상，농도변화규률위하추고우춘동량계；용해성무궤담、총담봉치분별위3.99 mg/L급1.70 mg/L，균출현재2011년하계，해현상여당년홍기장강류역련일강우유관。장강경류소휴대영양염시도치북지무궤담、총린농도변화적주요원인。대이화인자진행상관성분석표명，염도、pH치시영양염최주요적한제인자。
During the sampling period from Dec .2010 to Sep.2011 and Sep.2012-Jun.2013, the seasonal variation , morphologi-cal composition of nitrogen and phosphorus were analyzed , and relationship between environmental factors was studied , respectively . Results indicated that the main presence of DIN was nitrates , which accounted for more than 90%in all seasons , its concentration in summer/autumn was higher than that in spring/winter.The concentration peaks of DIN and TP were 3.99 mg/L and 1.70 mg/L, re-spectively , appeared in summer of 2011 during the flood period .