PROGRESS IN GEOGRAPHY ›› 2001, Vol. 20 ›› Issue (4): 341-346.doi: 10.11820/dlkxjz.2001.04.006

• Original Articles • Previous Articles     Next Articles

The Study of Distribution of N, P and heavy metals in Guanting Reservoir and Yongdinghe River

LIANG Tao, ZHANG Xiu mei, ZHANG Shen   

  1. Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2001-10-01 Revised:2001-11-01 Online:2001-12-24 Published:2001-12-24

Abstract: samples in water were collected in Guanting Reservoir and Yongdinghe River during low water period (winter and spring). Contents of N, P and heavy metals in original and filtering water were analyzed. Various species of N were also determined. Contents and spatial distribution of N, P and heavy metals were discussed. The results show that heavy metals pollution is very slight. Contents of most kinds of heavy metals are below the level III of surface water standard, and only very few samples go beyond level III, but they are still below level IV. However, N?P pollution are very heavy both in reservoir and along the river. Contents of most samples in Guanting Reservoir exceed the level IV of lake and reservoir water standard. A few of them even exceed level V. In addition, contents of various species of N change with locations. The pollution in Guanting Reservoir is more serious than Yongdinghe River, and the most serious site is located at bridge No.8 and the estuary following it. In all kinds of species of nitrogen, content of ammonia nitrogen is the highest in the reservoir. And particle phosphorous is the main species of phosphorous pollution. The pollution degrees of N and P can reflect the different sources of pollutants.

Key words: contents, Guanting Reservoir, N, P and heavy metals, Yongdinghe River

CLC Number: 

  • P333