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《Arid Zone Research》 2008-02
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Spatial Distribution and States of Phosphorus in Urban Topsoil in Urumqi

LIU Yu-yan1,2, LIU Min2(1.Department of Chemical Industry,Changji College,Changji 831100,Xinjiang,China;2.Department of Geography,East China Normal University,Shanghai 20062,China)  
In this paper,the spatial distribution and states of phosphorus in urban topsoil in Urumqi are lucubrated.The results show that the content of total P in urban topsoil in Urumqi is high,and its spatial distribution is significantly different from different functional zones.Such situation is closely related to land use in urban expansion,drainage of waste water and other wastes containing phosphorus.The content of phosphorus with different states is in an order of Ca-P Re-P Org-P (Fe+Al)-P Exch-P.The intensity of human activities and the population density in the commercial zone are significantly high,and there are a lot of pollution sources,thus the contents of total P,P with various states and water-dissolvable P are all higher than that in other functional zones.The contents of Exch-P and(Fe+Al)-P in the industrial zone are high,and the contents of Ca-P and Org-P in the functional zones with busy traffic are also high.The content of water-dissolvable P in urban topsoil in Urumqi is much higher than that in Shanghai,Nanjing,etc.where the humidity is high.There is a significant correlation between the content of total P and the contents of P with various states,such as Ca-P,Re-P,Org-P,(Fe+Al)-P and Exch-P as well as water-dissolvable P.
【Fund】: 国家自然科学基金项目(40131020);; 新疆维吾尔自治区高校科研计划项目(XJEDU2006S33)
【CateGory Index】: S153.6
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