Impact of Salinity on the Physical Soil Properties in the Groundnut Basin of Senegal: Case Study of Ndiaffate
Impact of Salinity on the Physical Soil Properties in the Groundnut Basin of Senegal: Case Study of Ndiaffate
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盐度对塞内加尔花生盆地土壤物理性质的影响：Ndiaffate 案例研究
DOI：
10.5539/ijc.v7n2p198
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Alfred Kouly Tine
中科院分区：
文献类型：
--
作者：
Fary Diome;Alfred Kouly Tine
这项研究是在雨季(9月)进行的，以评估盐分对土壤物理性质的影响。研究区域由农业区(ZC)和盐产区(SA)、非植被区(TV)和少量植被区(TA)组成。我们的结果表明，电导率的测量值(ZC为14µS.cm-1，SA为3290µS.cm-1)表明，从农业活动区(ZC)到盐产区(SA)，盐度存在一个梯度。土壤容重和入渗量随盐度梯度的不同而变化，从非植被区(TV，2.40 kg.m-3；0 mm·h-1)到小植被区(TA，2.4 kg.m-3；0.2 mm.h-1)，盐产区(SA，2.32 kg.m-3；2.4 mm.h-1)，最后到农业活动区(ZC，2.12 kg.m-3；14 mm·h~(-1)。这一结果建立了盐度梯度与所研究土壤物理参数变化之间的关系。生产盐分的做法涉及增加土壤的含盐量。
This study was conducted during the rainy season (september) to evaluate the impact of salinity on the soil physical properties. The area of study is composed of agricultural (ZC) and salt production (SA) area, none vegetalized (TV) and little vegetalized (TA) spots.Our methodological approach is based on a sampling of soils in different depth (0-20; 20-40, and 40-60 cm), the measurement of their physical properties (bulk density, infiltration test) and chemical caracteristics (pH, EC, exchangeable bases, etc.).Our results show that the measured values of electric conductivity (14 µS.cm-1 in ZC and 3290 µS.cm-1 in SA) indicate a gradient of salinity from the agricultural activities zone (ZC) towards the salt production zone (SA). The values of bulk density and infiltration, vary according to a gradient of salinity which goes decreasing from the none vegetalized spots (TV, (> 2.40 kg.m-3; 0 mm.h-1) to the little vegetalized spots (TA, (2.4 kg.m-3; 0.2 mm.h-1), the salt production area (SA, (2.32 kg.m-3; 2.4 mm.h-1) and finally to the zone of agricultural activities (ZC, (2.12 kg.m-3; 14 mm.h-1).This result establishes a relation between the gradient of salinity and the modification of the studied soil physical parameters. The practice of salt production involves an increase in the salinity of the soils.