In 2003~2004 years POC fluxes decreased rapidly. The ratio value of DOC and POC fluxes increased rapidly, related possibly with retaining, reforming and eutrophication.

• 2003~2004年间POC通量急剧减少；DOC通量与POC通量的比值迅速增大；可能与三峡水库对颗粒物的拦蓄、改造及富营养化有关.