SPATIAL-TEMPORAL VARIATIONS OF PHOSPHORUS AND AMMONIA NITROGEN OFn BAOXIANG RIVER, DIANCHI LAKE CATCHMENT

摘要

Through investigating total phosphorus (TP) and ammonia nitrogen (NH3-N) concentrations of Baoxiang River, the spatial-temporal patterns and influencing factors of the TP and NH3-N pollution were studied. The results showed that the TP concentration increased gradually from the upper to lower reaches of the river, and TP concentrations at the town sites of Xiaobanqiao and Guandu were 0.5mg/L from July to September 2013, equalling or far exceeding the water quality V standard of surface water. Mo