■受盐影响的土壤具有足够的盐浓度,足以影响其他土地和土壤资源的使用,植物健康,土壤特性,和水质。因此,在Abaya和Chamo湖周围的南埃塞俄比亚裂谷地区进行了一项研究,以确定受盐影响的土壤的强度和类型,并绘制其空间分布图。
■在0-20厘米深度,采用网格土壤采样方案从受盐影响的农业土壤中收集数据。200m*200m或七个样线的足够间隔的网格单元,每个采样点每200米采集7个样本,是由QGIS软件的鱼网工具生成的,螺旋钻从拟议的245个土壤采样点中收集了226个土壤样品。使用统计和地统计学方法对数据进行分析和解释。使用QGIS中的标准Kriging算法从实验室点数据中预测并绘制了未采样表面。
■根据结果,研究区域的土壤在反应中被评为强碱性和中等碱性。土壤pH的变异系数(CV)最低。除了甘塔·坎查玛遗址,低CV(<10%)证实了所有研究领域pH值的相似性。EC值显示,除了GantaKanchame站点外,研究区域为少量盐水,评级为中度盐水至强盐水。研究区域土壤EC的变异性从中度到强烈变化。研究地点之间的可交换钠百分比(ESP)值分布显示出相当大的变异性和差异。该地区以低至高风险土壤碱度为主,正如研究区域的土壤ESPCV所证明的那样,这是>100%,并显示样品之间的显着变异性。在2274.65公顷的研究区域中,盐的类型为62.28%,26.09%,10.99%,和0.63%被归类为非盐水非钠,生理盐水,苏迪奇,和生理盐水,分别。在生理盐水之后,苏迪奇,和盐碱土,分别,非盐渍和非土壤构成了大部分调查区域。
■结果表明,几乎所有受盐影响的区域都位于相对较低的坡度区域,具有平坦至几乎平坦的坡度(0-2%)。研究发现,研究区域需要特定的土壤管理策略,以提高研究区域周围的盐度和碱度问题,并建议将开垦技术作为问题的程度。
UNASSIGNED: Salt-affected soils have significant enough salt concentrations to impact other land and soil resource uses, plant health, soil characteristics, and water quality. Consequently, a study was carried out in the South Ethiopian Rift Valley area around the lakes of Abaya and Chamo to determine the intensity and the types of salt-affected soil and map their spatial distributions.
UNASSIGNED: At 0-20 cm depths, a grid soil sampling scheme was employed to gather data from agricultural soils affected by salt. An adequately spaced grid cell of 200 m*200 m or seven transects, with seven samples collected every 200 m on each sampling site, was generated by the QGIS software\'s Fishnet tool, and an auger collected 226 soil samples from the proposed 245 soil sampling points. The analysis and interpretation of the data were done using both statistical and
geostatistical methods. The un-sampled surface was predicted and mapped from laboratory point data using the standard Kriging algorithm in QGIS.
UNASSIGNED: According to the results, the soil in the study area was rated as strongly alkaline and moderately alkaline in the reaction. The coefficient of variation (CV) was the lowest for soil pH. Except for the Ganta Kanchama site, low CV (<10 %) confirmed the similarity of pH values throughout all research areas. The EC values depicted that the study area is slightly saline except for the Ganta Kanchame site, which rated moderately saline to strongly saline. The variability of soil EC rated moderate to strong variation for the studied area. The exchangeable sodium percentage (ESP) values distribution between the study sites demonstrates considerable variability and difference. The area is dominated by low to high-risk rate soil sodicity, as evidenced by the soil ESP CV of the studied area, which was >100 % and showed significant variability among the samples. Out of 2274.65ha of the studied area, the type of salt 62.28 %, 26.09 %, 10.99 %, and 0.63 % were categorized as non-saline non-sodic, saline-sodic, sodic, and saline, respectively. Following saline-sodic, sodic, and saline soils, respectively, non-saline and non-sodic soils comprise most of the investigated areas.
UNASSIGNED: The result indicates almost all the salt-affected areas were situated in relatively lower slope areas exhibiting a flat to almost flat slope (0-2%). The study\'s findings are that the studied area needs specific soil management strategies to boost the salinity and sodicity problems around the study area and recommended reclamation techniques as the extent of the problems.