城市土壤磷素特性及其与地下水磷浓度的关系

摘要/Abstract

摘要： 采集了8个南京市的城区土壤剖面及同位置地下水样品,进行了P素特性的研究.结果表明,城市土壤的全P、有效P和可溶性P含量分别为1.26～11.41g·kg^-1、19.8～166.74mg·kg^-1和0.51～5.41mg·kg^-1,远高于相同地区的农业土壤;土壤有效P与全P呈极显著正相关,土壤可溶性P与全P、有效P的相关性达到极显著水平,而土壤有机C、全N与土壤全P、有效P、可溶性P不相关.城市地下水中溶解态P和总P的浓度分别为0.010～1.759mg·L^-1和0079～1.876mg·L^-1,它们之间呈极显著相关性.地下水中溶解态P、总P浓度与土壤剖面全P、有效P、可溶性P的加权平均值的相关性达到极显著或显著水平.

关键词: P, 城市土壤, 地下水

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.

Key words: Phosphorus, Urban soil, Groundwater

中图分类号:

S153.6⁺1

卢瑛, 龚子同, 张甘霖. 城市土壤磷素特性及其与地下水磷浓度的关系[J]. 应用生态学报, 2001, (5): 735-738.

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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