【作者】 何敏； 周跃； 吕喜玺； Alan Ziegler；

【Author】 He Min~1,~zhou Yue~2,Lv xixi~3,Alan Ziegler~3 (1.Oxibridge College,Kunmin University of Science and Technology,Kunmin 650106; 2.Yunnan University of finance economics,Kunmin 650221;3.Department of Geography National University of Singapore,Singapore 120605)

【机构】 昆明理工大学津桥学院； 云南财经大学； 新加坡国立大学地理系；

【摘要】 根据2007年和2008年两年内对龙川江楚雄水文站的不间断采样分析,对龙川江N、P含量特征及其输送通量进行研究。氮输出以NO₃^--N为主,超过氮素输出总量的50%,磷输出以悬浮颗粒结合态磷（PP）为主,占总磷输出量的99%,PP随悬浮颗粒输出量的增加而增加,两者间存在着极显著相关关系。分析得出龙川江各形式N、P输出通量主要受径流量所控制,2007年9月至2008年8月共向下游输送约12.5t N和12.6t P,丰水期N、P的输送量分别达到92.9%和99.1%。在2008年11月份洪水期间30d时间中,共有7.5t N和5.7t P从楚雄水文站向下游输送,TN、TP输出量分别达到全年输出量的30.3%和32.2%。并提出了龙川江各种形式N、P输送通量方程式。更多还原

【Abstract】 Based on the results of sample measurement of nutrient concentrations in the Longchuanjiang River at Chuxiong Station in two years(2007 and 2008 year),variations of nitrogen and phosphorus contents and the nutrient loads were discussed.The results showed that nitrate was the main form of the nitrogen discharged, accounting for more than 50%of the total lost nitrogen,while particulate-associated phosphorus(PP) was the main form,and accounting for 99%of the total phosphorus discharged.The discharge of PP was correlated well with suspended particulates.Various form of N and P in the Longchuanjiang River were mainly controlled by runoff,about 12.5 tons nitrogen and 12.6 tons phosphorus were transported to the low reach in the September of 2007 to August of 2008,practically,in the flood season account for 92.9%and 99.1%of the total In November,about 7.5 tons nitrogen and 5.7 tons phosphorus were transported,accounts for 30.3% and 32.2 of the total.The transport equations of various forms of N and P were suggested by this paper.更多还原