[1]MAO Xu-feng,WEI Xiao-yan,CHEN Qiong,et al.Reduction Efficiency and Partition of the Ulansuhai Lake[J].Research of Soil and Water Conservation,2014,21(04):307-311.

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Reduction Efficiency and Partition of the Ulansuhai Lake

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 04 Page number: 307-311 Column: Public date: 2014-08-28

Title:: Reduction Efficiency and Partition of the Ulansuhai Lake

Author(s):: MAO Xu-feng¹, WEI Xiao-yan¹, CHEN Qiong¹, WEI Xi-jie²; 1. College of Life and Geography Sciences, Qinghai Normal University, Qinghai, Xining 810000, China;
2. Grassland Research Institute of Academy of Animal and Veterinary Sciences, Qinghai University, Xining 810016, China

Keywords:: nutrients; reduction efficient; partition research; the Ulansuhai Lake

CLC:: X524

DOI:: -

Abstract:: This study analyzed the reduction process of total nitrogen and total phosphorus in water, plants and sediment based on nearly 2-year monitoring data from 20 monitoring points in the Ulansuhai Lake. Reduction efficient index was screened to calculate reduction efficiencyof different regions of the lake. Cluster analysis was utilized to regionalize the lake. Results indicated the concentrations of N and P in water and aquatic plants reduced along with water flows; there was no obvious distribution rule with respect to the concentration in sediments and the concentration peak appeared in the southeast region of the lake. Nutrient concentrations between water and aquatic plants had the positive correlation (N, R²=0.565, p < 0.05; P, R²=0.867, P < 0.01) while there was no obvious correlation of nutrient concentrations between sediments and plants or sediment and water. According to the reduction efficiency, Ulansuhai Lake can be divided into 2 or 4 regions. Different measures should be taken to treat the eutrophic lake. The current research may provide scientific basis for eutrophication control and management of eutrophic lakes.

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