|Table of Contents|

Study on the Dynamic Changes of Nitrogen and Phosphorus from PondFarms in Different Growth Stages of Crab in Taihu Lake Basin

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2020年04期
Page:
129-134
Research Field:
·环境科学与工程·
Publishing date:

Info

Title:
Study on the Dynamic Changes of Nitrogen and Phosphorus from PondFarms in Different Growth Stages of Crab in Taihu Lake Basin
Author(s):
Ji Ming1; 2; Yan Xingcheng1; 2; Xu Xiaoguang1; 2; Zhang Zhongqian1; 2; Ran Shanshan1; 2; Wang Guoxiang1; 2; Sun Li3
(1.School of Environment,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Jiangsu Key Laboratory ofEnvironmental Change and Ecological Construction,Jiangsu Engineering Laboratory of Water and Soil Eco-remediation,Nanjing 210023,China)(3.Water Conservancy Bureau of Binhu District in Wuxi City,Wuxi 214071,China)
Keywords:
crab farming; water quality; sediment; dynamic characteristics; nitrogen and phosphorus pollution
PACS:
X52
DOI:
10.3969/j.issn.1001-4616.2020.04.018
Abstract:
In order to understand the dynamic changes of nitrogen and phosphorus in the water body and sediments of crab farming ponds and reduce the pollution to the surrounding waters,a typical crab farm in Taihu Lake Basin was selected to monitor these parameters. The results showed that the concentration of nitrogen and phosphorus was the lowest during the fifth shelling period(July-August)and the highest during the fattening period(September-October). The load of nitrogen and phosphorus in sediments was the highest in the fattening period and the lowest in the fishing season. The TN,TP and NH3-N concentrations of pond waters during the fattening period were inferior to the Class V water standards of the National Surface Water Environmental Quality Standard,and the TN and TP during the fishing season exceeded the first-level standard of the Discharge Requirements of Pond Aquaculture Water in Taihu Lake Basin. It is recommended to set the reasonable amount of crab seedlings,and strengthen the daily management,and pay attention to the control of pond water quality during the fattening period.

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Last Update: 2020-11-15