Phosphorus characteristics of urban soil and its relationship with P concentration in groundwater

Abstract

Abstract: Based on the data from 8 soil profiles,the phosphorus characteristics of soils a nd groundwater in Nanjing urban area were studied. The results showed that the c oncentrations of total P, available P and soluble P in urban soils were 1.26～11.41g·kg^-1, 19.48～166.74mg·kg^-1 and 0.51～5.41 mg·kg^-1, res pectively, much higher than those in agricultural soils in the same region.An extremely s ignificant positive correlation was found between available P and total P,and be tween soluble P and total and available P.There was no significant correlation b etween organic carbon, total N and total P, available P and soluble P in the urb an soils. The concentrations of dissolved P and total P in groundwater were 0.01 0～1.759mg·L^-1 and 0.079～1.876mg·L^-1,respectively,and they were significantly correlated to the weighted average contents of total P,available P, and soluble P in the urban soil profiles.

CLC Number:

S153.6⁺1

LU Ying, GONG Zitong, ZHANG Ganlin. Phosphorus characteristics of urban soil and its relationship with P concentration in groundwater[J]. Chinese Journal of Applied Ecology, 2001, (5): 735-738.

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