[1]HU Peng-fei,HE Tai-rong.Forms and Pollution Assessment of Nitrogen in Surface Sediments of Changshou Lake[J].Research of Soil and Water Conservation,2012,19(04):163-167.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 04
Page number:
163-167
Column:
Public date:
2012-08-20
- Title:
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Forms and Pollution Assessment of Nitrogen in Surface Sediments of Changshou Lake
- Author(s):
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HU Peng-fei, HE Tai-rong
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College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China
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- Keywords:
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sediments; nitrogen; forms; pollution assessment; Changshou Lake
- CLC:
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X524
- DOI:
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- Abstract:
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In order to illuminate nutrient occurrence characteristics in surface sediments of Changshou Lake, sediments samples at 15 sampling sites were collected in April of 2009. Forms and pollution degree of nitrogen in the surface sediments of Changshou Lake were analyzed by chemical extraction in this paper. Results were as followed. (1) Content of total nitrogen (TN) ranged from 1 240.00 mg/kg to 5 110.00 mg/kg. The main form of total nitrogen (TN) was organic nitrogen (ON). Ammonium nitrogen (NH4+-N) was the dominant part of inorganic nitrogen (IN). (2) Coefficient of variation of every nitrogen forms ranged between 0.1 and 1.0, which belonged to moderate intensity of variation. (3) Current of water played an important role in the distribution and migration of nitrogen, the impact of aquaculture was not obvious. But the water degree had some influences on distribution of nitrogen. (4) The correlation analysis among different nitrogen forms suggested that the concentrations and distribution of total nitrogen (TN) were mainly controlled by organic nitrogen (ON), and inorganic nitrogen (IN) was affected by ammonium nitrogen (NH4+-N) almost. (5) The surface sediments showed moderate degree pollution, so local government should strengthen the monitoring and management of Changshou Lake urgently.