Title :
A case study for estimating average annual fluxes of nutrients in lake Baiyangdian, North China
Author :
Fei, Wang ; Wang Xuan
Author_Institution :
Sch. of Environ., Beijing Normal Univ., Beijing, China
Abstract :
Nutrient overloads are one of important environmental problems in protecting freshwater in watershed. In this study a simple strategy, based on annual nutrient budgets of water body, is presented to estimate nutrient fluxes to lake Baiyangdian. Anthropogenic nutrient fluxes (ANF) is calculated by focusing on nutrient removal fluxes by vegetations (NRFV), net loss fluxes (NLF) by physical and chemical reactions, and nutrient replenishment fluxes (NRF) by water resource allocation. The results show that in Lake Baiyangdian, 1) Cumulative anthropogenic nutrient fluxes of total phosphorus (TP) and total nitrogen (TN) during 2000 to 2009 are 647.4 ton/yr, 5878.5 ton/yr, respectively. 2) Cumulative nutrient replenishment fluxes of TP and TN during the decade are 67.3 ton/yr, 2621.2 ton/yr, respectively. 3) The efforts to restrict anthropogenic fluxes of N and P will be necessary to improve the eutrophication-related water quality of fresh waters.
Keywords :
lakes; water resources; AD 2000 to 2009; Lake Baiyangdian; NRFV; North China; annual nutrient budgets; average annual nutrient fluxes; cumulative anthropogenic nutrient fluxes; eutrophication-related water quality; freshwater; net loss fluxes; nutrient overloads; nutrient replenishment fluxes; total nitrogen; total phosphorus; vegetations; water body; water resource allocation; watershed; Humans; Lakes; Nitrogen; Production; Resource management; Water conservation; Water resources; anthropogenic disturbance; lake Baiyangdian; nutrient fluxes;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893116
