Due to the concentration of N and P in the reservoir was decreasing in different speed,TN/TP fell obviously,and MC- LR correlated positively with TP and TN/TP but correlated negatively with NH_4-N from August to September.

• 8-9月期间,水库中TP逐渐降低,但其它降低速率低于TN,造成TN/TP明显降低,MC-LR与TP和TN/TP呈正相关,与NH_4-N呈负相关;