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Updated: Jul 25, 2026

Design and Construction of an Urban Runoff Research Facility
Published on: August 8, 2014
[Runoff phosphorus discharge from different land use system in subtropical hilly areas]
Jinling Yang1, Ganlin Zhang, Hua Zhang
1Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008.
Abstract:
The environmental effect of land use becomes one of the most important issues in ecosystem research. This study on phosphorus in runoff was conducted in two contiguous sub-watersheds with three land use types, which located in Meicun watershed of Xuancheng County, Anhui Province. The sub-watersheds differed in land use, but had similar soils and hydrology. The results showed that the runoff dissolved phosphorus (DP) and particulate-associated phosphorus (PAP) concentration of forest-pond-paddy-village system was the highest among the three land use systems. There was no significant difference between DP of the forest-pond system and forest-paddy system. However, the PAP and TP of forest-paddy system was higher than that of forest-pond. The rank of the DP, PAP and TP discharges was wholly same with that of the PAP concentration. About 90% of TP was discharged with the particulate soil. There was a significant linear relationship between the concentration of PAP and the particulate of runoff in three land use systems. But only in the forest-pond-paddy-village system existed a logarithm linear relationship between DP and PAP concentration.
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