Journal of Environmental Biology

Seasonal characteristics of chlorophyll-a and its relationship with environmental factors in Yunmeng Lake of China

Dai Wei^1,2, Gao Yuan^1,3* and Feng Simon⁴

¹Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, Linyi University Institute of

Water and Soil Conservation and Environmental Protection, Linyi 276005, China

²Lin Yi No.4 Middle School, Linyi 276037, China

³Linyi Scientific Exploration Laboratory, Linyi 276037, China

⁴College of Science, University of Hong Kong, Hong Kong, 999077, China

*Corresponding Author E-mail: gaoyuan1182@tom.com

 Publication Data

Paper received:

21 February 2016

Revised received:

27 April 2016

Re-revised received:

5 May 2016

Accepted:

23 June 2016

Abstract

Sampling was carried out according to the season, in order to analyze the seasonal characteristics of chlorophyll-a and its relationship with environmental factors in Yunmeng Lake on1^st May, 12^th August, 1^st October and 14^thDecember of 2013. The results showed that the average annual water temperature, pH, TP, TN and chlorophyll-a concentration in Yunmeng Lake was 15.9oC, 7.12, 0.07 mg l^-1, 1.58 mg l^-1 and 30.60 ?g l^-1 respectively. The water quality was Class IV water or eutrophic type. Water chlorophyll-a was significantly positive with pH and TP(R²=0.6077 p<0.01; R²=0.5855 p<0.01), low correlation with water temperature (R²=0.0566 p>0.05). lg (Y_{Chl. a}) was significantly positive with lg(X _TP) (R²=0.5176 p<0.01), N/P was 22 and P may be restricted.   

 Key words

Andi reservoir, Chlorophyll-a, Lake yunmeng, Total nitrogen, Total phosphorus

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