Determining of soil resistivity by electrical resistivity tomography in agroforestry land system
Determining of soil resistivity by electrical resistivity tomography in agroforestry land system
复制标题
农林地系统电阻率断层扫描测定土壤电阻率
DOI：
10.1088/1755-1315/393/1/012063
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
R. Harryanto
中科院分区：
文献类型：
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作者：
A. Mulyono;I. Arisbaya;Y. Sudrajat;M. Djuwansah;A. Suriadikusumah;R. Harryanto
土壤水文特性的研究，由于其演习钻孔，测试坑，甚至挖沟，是昂贵和耗时。电阻率层析成像（ERT）技术被认为是确定土壤电阻率作为土壤含水量代理的可行方法之一。在印度尼西亚西爪哇省的坡农林地系统中，在三条电阻率线上进行了研究。Pangalengan线样带的土壤电阻率值范围为4.3-2500 Ω，Mandalahaji线样带范围为23-288 Ω，Kiara Payung线样带范围为24-500 Ω。农林复合系统土壤电阻率高于非农林复合系统。土壤电阻率与土壤含水量成反比关系。在农林复合系统中使用木本树种作为水分吸收剂，有可能防止土壤快速饱和，保持陡峭地区的稳定。在陡坡区，饱和状态降低了土体的抗剪强度，增加了上部边坡的荷载，从而引发土体移动。
The study of soil hydrological characteristics is expensive and time-consuming due to its exercises drilling, test pit, and even trenching. The electrical resistivity tomography (ERT) technique is known as one of the viable methods for determining soil resistivity as a proxy for soil water content. The research has been done in three resistivity lines at the sloping agroforestry land system in West Java province-Indonesia. Soil resistivity value in the Pangalengan line transect ranges from 4.3-2500 Ω, Mandalahaji line transect ranges from 23-288 Ω, and Kiara Payung line transect ranges from 24-500 Ω. Soil resistivity under the agroforestry land system was higher than non-agroforestry land. Soil resistivity is firmly related to the soil water content with an inverse pattern. The use of woody tree species as a water absorber in the agroforestry farming system was the potential to prevents rapid soil saturation and maintain the stability of the steep area. In the steep area, the saturated condition decreases soil shear strength and increases the load on the upper slope so that it triggers soil mass movement.