土壤氮输入对地下水硝酸盐污染的影响评价与建模:阿尔及利亚北部上切利夫平原。

IF 1.2 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
A. Richa, A. Douaoui, N. Bettahar, Z. Qiang, J. Mailhol
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引用次数: 4

摘要

目前的研究将地下水硝酸盐污染与上切里夫的农业活动联系起来,上切里夫以集约化耕作而闻名。使用指示性克里格法绘制了2012年高水期硝酸盐浓度超过50ppm阈值的空间概率分布图。结果表明,硝酸盐浓度超过50 ppm的地区占上切里夫含水层面积的80%以上。从这张地图上看,受影响最严重的地区似乎是那些施氮强度最强的地区(花园农业地区,尤其是马铃薯)。这些结果与实验数据一致,表明硝酸盐的平均浓度值为75 ppm,明显高于世界卫生组织(WHO)的标准。在这项研究中,估计今年上cheliff土壤的总氮量为247公斤公顷,并与新的计算机模型(如PILOTEN)的结果进行了比较,该模型用于分析替代管理措施以及土壤、植物和气候特征,以确定马铃薯作物下的氮淋失量。该模型的结果表明,60%的氮输入是马铃薯作物下的淋溶,这与硝酸盐的空间演化图有关。上切里夫地区地下水硝酸盐污染严重,并受到无机肥料施用和土地利用的双重影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment and modeling the influence of nitrogen input in the soil on groundwater nitrate pollution: plain of Upper-Cheliff (north Algeria).
The present study associates groundwater nitrate pollution with agricultural activity in the Upper-Cheliff wich is known for intensive farming practices. The indicatory kriging method is used in order to elaborate a map of the spatial probability distribution of nitrate concentration that exceeds a threshold value of 50ppm during high watering period for the year 2012. The obtained results show that the areas exceeding nitrate concentrations of 50 ppm, occupy more than 80% of the Upper-Cheliff aquifer area. It appears, from this map, the most affected areas are those for which the level of intensification of the N-fertilizers is the strongest (zone of garden farming, potatoes in particular) throw condensed.These results are coherent with the experimental data, which show an average nitrate concentration value of 75 ppm, significantly higher than the World Health Organization (WHO)’S standards. In this study, the total nitrogen brought to the soils of the Upper-Cheliff is estimated at 247 kg ha for this year, and compared to the results of New Computer models such as PILOTEN used to analyze alternative management practices together with soil, plant, and climate characteristics to determine the amount of nitrogen leached under the potatoes crops. The result of this model show that 60% of nitrogen input is leaching under potato crops which is relevant to the map showing the spatial evolution of nitrate. Nitrate pollution in the groundwater of the Upper-Cheliff appears to be significant and driven by the application of both inorganic fertilizer and land use.
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来源期刊
Global Nest Journal
Global Nest Journal 环境科学-环境科学
CiteScore
1.50
自引率
9.10%
发文量
100
审稿时长
>12 weeks
期刊介绍: Global Network of Environmental Science and Technology Journal (Global NEST Journal) is a scientific source of information for professionals in a wide range of environmental disciplines. The Journal is published both in print and online. Global NEST Journal constitutes an international effort of scientists, technologists, engineers and other interested groups involved in all scientific and technological aspects of the environment, as well, as in application techniques aiming at the development of sustainable solutions. Its main target is to support and assist the dissemination of information regarding the most contemporary methods for improving quality of life through the development and application of technologies and policies friendly to the environment
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