title: [Purification of surface water nitrogen and phosphorus pollutants by Zhalong Riparian Wetland].
abstract: The laws of purification of stream nitrogen and phosphorus by riparian wetland was studied by sampling in Long'an Bridge and Shuiku Bridge reaches in Zhalong Wetland. Results from the spatial purifying equations show that two reaches exhibited persistent capability of purification of TP and PO4(3-) through out the seasons of spring, summer and fall, and the purifying coefficient of TP fluctuates from 0.00186 to 0.01175 mg x (L x km)(-1) while the PO4(3-)'s was from 2.5E-4 to 0.00704 mg x (L x km)(-1). As to TN, the purification occured only in the seasons of spring and summer while in fall it experienced accumulation downwards along the streamflow, and the output capability was up to 0.48175 mg x (L x km)(-1). Analysis of effect factors show runoff and input concentration have a certain influence on the purification capability.
authors.affiliation: Northeast Institute of Geography & Agro-ecology, CAS, Changchun, 130012.
authors.forename: Yue-dong
authors.initials: YD
authors.lastname: Guo
authors.forename: Yan
authors.initials: Y
authors.lastname: He
authors.forename: Wei
authors.initials: W
authors.lastname: Deng
authors.forename: Guang-xin
authors.initials: GX
authors.lastname: Zhang
authors.forename: Ji-hua
authors.initials: JH
authors.lastname: Pan
mesh_terms: D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D002681:China; D009584:Nitrogen / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000191:economics / Q000379:methods*
chemical_list: D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen