JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2015, Vol. 50 ›› Issue (11): 23-31.doi: 10.6040/j.issn.1671-9352.0.2014.522

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Decomposition processes and simulation of two species of submerged plants under different temperatures

HOU Xue-wei1, ZHANG Gui-zhai2, LI Jing2, LI Xiao-ming1   

  1. 1. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China;
    2. Department of Agriculture Science and Engineering, Shandong Agriculture and Engineering College, Jinan 250100, Shandong, China
  • Received:2014-11-23 Revised:2015-03-09 Online:2015-11-20 Published:2015-12-09

Abstract: Decomposition experiment of two species of submerged plants collected from Daming Lake under different temperatures was performed under laboratory simulated conditions for 60 days. The objective of this research was to study the decomposition processes and nutrient dynamics of the two submerged plants. The results indicated that the decomposition rates of both submerged plants were very fast. The decomposition process showed that the decomposition rates were faster in early stage than in later stage for two submerged plants. And the decomposition rate of Potamogeton crispus was greater than that of Potamogeon pectinatus. The decomposition efficiency and nutrient dynamics in residues of two submerged plants under different decomposition stages were mainly influenced by the chemical compositions of two submerged plants. The decomposition process was affected by water temperature. The higher temperature significantly accelerated the decomposition rate in the early stage for two submerged plants, but did not increase the final decomposition efficiency for two submerged plants.

Key words: residue, decomposition, nutrient, submerged plant

CLC Number: 

  • X524
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