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河岸带不同植被类型及宽度对污染物去除效果的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年06期
Page:
47-52
Column:
研究论文
publishdate:
2013-11-27

Article Info:/Info

Title:
Effects of riparian buffer vegetation types and width on pollutant removal
Article ID:
1000-2006(2013)06-0047-06
Author(s):
LI Pingping1 CUI Bo2 FU Weiguo2 ZHU Yongli1 GUAN Yongxiang3
1. College of Forest Resource and Environment, Nanjing Forestry University, Nanjing 210037,China;
2. Institute of Agricultural Engineering, Jiangsu University, Zhenjiang 212013,China;
3. Energy and Environmental Protection Station of Jiangsu P
Keywords:
riparian buffer vegetation type vegetation width pollutant removal ratio
Classification number :
S718
DOI:
10.3969/j.issn.1000-2006.2013.06.010
Document Code:
A
Abstract:
Riparian buffer play an important role in improving and protecting water quality from non-point source pollution. Understanding the riparian structure and width is critical for its function and management. In this study, the selected natural buffers were in the Dongzhanbei River basin in Danyang city. The effects of four vegetation types and two kinds of vegetation width(3 m and 6 m)on TN, NH+4-N, TP and COD removal were assessed respectively. The results indicated that vegetation types had significant effect on pollutant’s removal and the removal ratio varied with different seasons, vegetations and pollutants. The removal values of shrub-herb buffer for these four pollutants were higher than the other three vegetation types all through the year. In summer and autumn, the removal rate of riparian buffer with reed was the highest, while it was the lowest in winter. It was also demonstrated that the pollutant removal rates of riparian buffer with arbor- shrub-herb were higher than that of arbor-herb. The removal efficiency of pollutants for different buffer widths varied with seasons, vegetation and pollutant types. And it was higher in winter than in summer, for TN than for TP, and for arbor-herb than shrub-herb. Overall, the removal rates of the four vegetation types were changing with 20%-40% for TN, 20%-70% for NH+4-N, 50%-90% for TP and 40%-80% for COD.

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Last Update: 2013-11-30