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cje ›› 2003, Vol. ›› Issue (5): 125-126.

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Assessment of water pollution using population structure of floating diatom in Nanwan Reservoir in Henan

XIN Xiaoyun   

  1. College of Resources and Environment, Shanxi University, Taiyuan 030006, China
  • Received:2002-07-13 Revised:2002-10-30 Online:2003-05-10

Abstract: An analysis of six samples in Nanwan Reservior indicated that there were 61 taxa of diatom.According to the Shannon-Wiener diversity index(H′).Lloyd-Ghelardi evenness index(E)and saprobiem spectrum analysis of dominant diatom species, the water quality of Nanwan Reservior was clean to slightly polluted.

Key words: Reduction of N application, Wheat-maize cropping system, Residual nitrate N, N balance

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