doi:10.16186/j.cnki.1673-9787.2020.5.6

Received:2019/11/24

Revised:2019/03/12

Published:2020/09/15

Influence of the decomposition of emergent plant residues on physical property of lake Baigui wetland deposition

HU Hongwei1, ' 2, FU Yongmei1, LIU Pan1, WU Junfeng2, MA Aishun1, HU Kaiyao1, GUO Yifei1,2

1.School qfMunicipal and Environment Engineering， Henan University of Urban Construction， Pingdingshan  467036 ， Henan， China；2.Henan Province Key Laboratory of Water Pollution Control and Rehabilitation， Pingdingshan  467036 ， Henan， China

Abstract:Through a 60 days indoor simulation experiment， the common dominant plants of Daiguihu wetland， calamus and reed， were selected to study the influence of their decomposition process on the physical acous properties of wetland deposition. Three different biomass densities， 2，4 and 8 g/L， were set up， respectively. The changes of physical parameters of each experimental group with the decomposition of plants were measured ，and the change rules were studied by single factor analysis of variance and Pearson linear correlation analysis. The results showed that the withered calamus and reed had lost a lot of nutrients under the eluviations， but they still had a great influence on the physical properties of the deposition after lodging. At the end of the experiment， the sedimentary physical parameters in each experimental group changed significantly compared with the initial value， and were closely related to plant species and biomass density. Pearson linear correlation analysis of TP and NH₄ -N in deposition with physical parameters of water body and decomposition rate of plants in each experimental group showed that no general regularity was found.

Key words:calamus;reed;wetland deposition;emergent plant residue;decomposition

挺水植物残体腐解对白龟湖湿地沉积物理化性质的影响_胡红伟.pdf