Using beryllium-7 to evaluate soil erosion processes in agricultural lands in semiarid regions of Central Argentina |
| |
| Authors: | Juan Pablo de Rosas Alexander Dario Esquivel Diego Martinez Heimann Agustin E Negri Flavia Lohaiza Diego Leonardo Valladares Alejandro I Zavala Hugo Huck Jimena Juri Ayub |
| |
| Institution: | 1.Grupo de Estudios Ambientales – Instituto de Matemática Aplicada San Luis – Universidad Nacional de San Luis/CCT-San Luis, CONICET,San Luis Capital,Argentina;2.Departamento de Física,Universidad Nacional de San Luis,San Luis Capital,Argentina;3.Centro de Investigaciones Hidráulicas e Hidrotécnicas (CIHH),Universidad Tecnológica de Panamá,El Dorado,Panama;4.Instituto de Investigación e Ingeniería Ambiental,Universidad Nacional de San Martín, CONICET,San Martín,Argentina;5.Departamento de Física Experimental,Comisión Nacional de Energía Atómica,San Martín,Argentina;6.Escuela de Ciencia y Tecnología,Universidad Nacional de San Martín,San Martín,Argentina;7.Departamento de Bioquímica y Ciencias Biológicas,Universidad Nacional de San Luis,San Luis Capital,Argentina |
| |
| Abstract: | This work presents the results of a soil erosion study using the 7Be technique. This technique estimates the water erosion/deposition from the comparison between 7Be soil content of a reference site and an eroded or sedimented site. The soil samples were collected from an agricultural area of the semiarid region of Argentina near San Luis City, which has a marked rainfall season. The area has been used for crop cultivation, being subjected to plowing practices. The 7Be in the Reference Site was in the first centimeter of soil, showing the typical exponential decreasing of 7Be soil content with depth, with the 7Be inventories value being 340?±?50 Bq m?2 for the dry season and 571?±?48 Bq m?2 for the rainy season. The 7Be technique was applied to a potential eroded site subjected to traditional tillage practices (plowing). A net soil erosion value of 13.5 t ha?1 (1.35 kg m?2) was obtained. From the assumptions of the applied technique, we can draw the inference that this erosion was caused by rains produced in the month prior to the date of soil sampling. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
