Suchergebnisse

One of the challenges in orchard management, in particular of hedgerow tree plantations, is the delineation of management zones on the bases of high-precision data. Along this line, the present study analyses the applicability of vegetation indices derived from UAV images to estimate the key structural and geometric canopy parameters of an almond orchard. In addition, the classes created on the basis of the vegetation indices were assessed to delineate potential management zones. The structural and geometric orchard parameters (width, height, cross-sectional area and porosity) were characterized by means of a LiDAR sensor, and the vegetation indices were derived from a UAV-acquired multispectral image. Both datasets summarized every 0.5 m along the almond tree rows and were used to interpolate continuous representations of the variables by means of geostatistical analysis. Linear and canonical correlation analyses were carried out to select the best performing vegetation index to estimate the structural and geometric orchard parameters in each cross-section of the tree rows. The results showed that NDVI averaged in each cross-section and normalized by its projected area achieved the highest correlations and served to define potential management zones. These findings expand the possibilities of using multispectral images in orchard management, particularly in hedgerow plantations. ; Grant RTI2018-094222-B-I00 (PAgFRUIT project) by MCIN/AEI/10.13039/501100011033 and by "ERDF, a way of making Europe", by the European Union

[spa] Se presentan los resultados históricos derivados de la primera fase de la investigación sobre este importante yacimiento, realizada exclusivamente a partir de métodos no invasivos. Los datos recuperados a partir de la prospección pedestre y geofísica han permitido verificar la condición urbana del asentamiento, atestiguada tanto por sus dimensiones como por su complejidad estructural y la naturaleza de los materiales muebles recuperados, que sugieren actividades económicas especializadas y la coexistencia de distintos sectores sociales. La desaparición del asentamiento en torno a 200 a. C. confirma el profundo impacto de la conquista romana en los patrones de poblamiento del mundo ibérico septentrional. ; [eng] We present the historical results derived from the first phase of research on this important site, conducted exclusively with non-invasive methods. The data recovered from pedestrian and geophysical prospecting have allowed us to verify the urban condition of the settlement, attested not only by its size, but also by its structural complexity and the nature of the pottery collected, which suggest specialized economic activities and the coexistence of different social sectors. The abandonment of the settlement around 200 BCE confirms the profound impact of the Roman conquest on the settlement patterns of the northern Iberian world.