The influence of land-use patterns in the Ruvu river watershed on water quality in the river system
The influence of land-use patterns in the Ruvu river watershed on water quality in the river system
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DOI：
10.1016/j.pce.2004.09.002
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发表时间：
2004-01-01
影响因子：
3.7
通讯作者：
Machiwa, JF
中科院分区：
文献类型：
--
作者：
Ngoye, E;Machiwa, JF
这项工作评估了鲁武河流域土地使用模式对河流系统水质的影响。还调查了水质参数的季节变化。选择了10个河流水取样站，根据标准分析程序收集和分析样品。结果表明，该地区河水理化参数的变化范围为：pH值6.95 ± 0.09 ~ 8.07 ± 0.23，温度14.0 ± 0.06 ~ 31.1 ± 0.4 ℃，EC值39.8 ± 0.8 ~ 48，734 ± 306 mus/ cm，pH值6.95 ± 0.09 ~ 8.07 ± 0.23。TDS，从19.9 +/- 0.4至24，367 +/- 152.9 mg/l;浊度，从3.0 +/- 0.6至840 +/- 69.3 NTU，DO，从6.8 +/- 0.02至16.78 mg/l。营养盐浓度的变化范围为：NO_3-N为0.006 ± 0.0003 ~ 0.62 ± 0.3mg/L，NH_4-N为0.34 ± 0.17 ~ 16.2 ± 0.5mg/L; PO_4-P为0.009 ± 0.001 ~ 1.75 ± 0.2mg/l，TP为0.02 ± 0.003 ~ 3.56 ± 0.38mg/l。与农田、工业区、居民区和市场相比，森林覆盖区的水样溶解氧含量较高，氨氮和硝态氮含量较低。有明显的季节变化，显示在雨季的营养盐浓度增加。结果表明，人为活动在流域的河流水质损害。水污染防治战略，以确保防止污染和保护水资源的鲁武河流域的建议。(C)2004年由Elsevier Ltd.出版。
This work assessed the impacts of land-use patterns in the Ruvu river basin on water quality in the river system. Seasonal changes in water quality parameters were also investigated. Ten river water-sampling stations were selected and samples were collected and analysed according to standard analytical procedures. The results showed that physico-chemical parameters of river water ranged as follows: pH, from 6.95 +/- 0.09 to 8.07 +/- 0.23; temperature, from 14.0 +/- 0.06 to 31.1 +/- 0.4 degreesC; EC, from 39.8 +/- 0.8 to 48,734 +/-306 mus/ cm; TDS, from 19.9 +/- 0.4 to 24,367 +/- 152.9 mg/l; turbidity, from 3.0 +/- 0.6 to 840 +/- 69.3 NTU and DO, from 6.8 +/- 0.02 to 16.78 mg/ 1. The ranges for nutrient concentrations were NO3-N, from 0.006 +/- 0.0003 to 0.62 +/- 0.3mg/l-, NH4-N, from 0.34 +/- 0.17 to 16.2 +/- 0.5mg/l; PO4-P, from 0.009 +/- 0.001 to 1.75 +/- 0.2mg/1 and TP, from 0.02 +/- 0.003 to 3.56 +/- 0.38mg/l. Generally, water sainples from stations with forested catchments had high levels of DO and low levels of NH4-N and NO3-N compared to those from farmland, industrial, residential and market places. There were clear seasonal variations showing an increase in the concentrations of nutrients during rainy season. The results show impairment of the water quality of the river by anthropogenic activities in the catchment. Water pollution prevention strategies to ensure prevention of pollution and protection of water resources in the Ruvu river watershed are recommended. (C) 2004 Published by Elsevier Ltd.