Abstract:Lake Erhai is a large, shallow freshwater plateau lake in Yunnan Province in S. W. China. The water quality of Lake Erhai was monitored along 128km aquatic-terrestrial ecotone of this lake from July 2009 to June 2010. Annual mean concentrations of total nitrogen(TN), total phosphorus(TP), and permanganate index(CODMn) in aquatic-terrestrial ecotone water were Ⅲ class level,and the major pollution resources were TN and TP.Pollution in aquatic-terrestrial ecotone water was worse in summer and autumn than in winter and spring. Pollution in north and western of aquatic-terrestrial ecotone were much higher than in southern and eastern respectively. Concentrations of TN, TP and CODMn in aquatic-terrestrial ecotone close to villages and farmlands were much higher than those near forest and mountain lands. Under strong wind-wave hydrodynamic force, concentrations of TN, TP and CODMn close to lake bank (less than 60m from lake bank,depth£2.5m) were significantly higher than those far away from lake bank (more than 60 m from lake bank,depth from 3.0m to 8.0 m), however, under the weak wind-wave, there was no obvious differences between those two aeras.
尹延震, 储昭升, 赵明, 李泽坤, 叶碧碧, 金相灿. 洱海湖滨带水质的时空变化规律[J]. 中国环境科学, 2011, 31(7): 1192-1196.
YIN Yan-Zhen, CHU Zhao-Sheng, ZHAO Ming, LI Ze-Kun, YE Bi-Bi, JIN Xiang-Can. Spatial and temporal changes in water quality in aquatic-terrestrial ecotone of Lake Erhai. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(7): 1192-1196.