Pollution phosphorus

What are sources of nitrogen and phosphorus pollution in Earth s freshwater ... 

Systems that provide sufficient phosphorus to sustain crop growth may risk becoming a source of phosphorus pollution to waterbodies, which can contribute to eutrophication and the growth of toxic algae (Sharpley et al., 1996). Eutrophication... 

The distribution characteristics of phosphorus pollution in shallow groundwater... 

From Figure 4 of Huangqiaozha section it is shown that due to the serious phosphorus pollution in Kui River (R), there are phosphorus pollution in groundwater of the wells on flood plain... 

Well W4 and W5 well are located in a wheat and rice rotation farmland, while W6 is located in the orchard and other wells like E4, E5 and E6 are in the woodland. Although these wells are far from Kui River, there is serious phosphorus pollution in it. There are mainly two reasons. Firstly, the farmers irrigate the wheat and rice fields with water from this river. Secondly, farmers applied phosphate fertilizer to farmland, fruit trees and nursery garden in agricultural production. The phosphorus from the irrigation river and the fertilizer are partly used by the plant. According to the research, crop s... 

The spatial distribution characteristics of phosphorus pollution in groundwater are mainly influenced by the river water supplying and the different land use patterns. Under the flood plain the phosphorus pollution in groundwater is related to the water supplying by Kui River. Far away from Kui River there are many different land use patterns, phosphorus pollution intensity in groundwater is usually vegetable land > wheat and rice rotation farmland > orchard and woodland. 

Sun H. Liang W. 2007. Study on water body s phosphorus pollution and technology of its monitoring and management. Journal of Zhejiang Normal University (Nat.Sci) 30(2) 201-205 (in Chinese). 

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