Spatial and Temporal Patterns of Apparent Electrical Conductivity: DUALEM vs. Veris Sensors for Monitoring Soil Properties

Sensors

João Serrano¹  Shakib Shahidian² 

[1] University of Évora, ICAAM, Apartado 94, 7002-554 Évora, Portugal;

关键词: apparent soil electrical conductivity;    DUALEM sensor;    soil cover vegetation;    soil properties;    Veris;   

DOI  :  10.3390/s140610024

来源: mdpi

【 摘 要 】

The main objective of this study was to compare two apparent soil electrical conductivity (EC_a) sensors (Veris 2000 XA and DUALEM 1S) for mapping variability of soil properties in a Mediterranean shallow soil. This study also aims at studying the effect of soil cover vegetation on the EC_a measurement by the two types of sensors. The study was based on two surveys carried out under two very different situations: in February of 2012, with low soil moisture content (SMC) and with high and differentiated vegetation development (non grazed pasture), and in February of 2013, with high SMC and with short and relatively homogeneous vegetation development (grazed pasture). The greater temporal stability of Veris sensor, despite the wide variation in the SMC and vegetation ground cover indicates the suitability of using this sensor for monitoring soil properties in permanent pastures. The survey carried out with the DUALEM sensor in 2012 might have been affected by the presence of a 0.20 m vegetation layer at the soil surface, masking the soil properties. These differences should be considered in the selection of EC_a sensing systems for a particular application.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.