|
|
|
|
| |
|
|
VEDOVATO, L. B.; VICENTE, L. E.; PIQUEIRA, J. R. C.; PEREZ FILHO, A.; MATTOS, S. H. V. L.. |
Landscape metrics are traditionally used in the analysis and search for spatial patterns in complex environmental systems through of establishing numeric relationships between different types of targets on Earth's surface. Under this perspective, remote sensing has had great importance as a tool for data generation, providing several levels of land use and occupancy information isonomically for large areas. For that purpose, remote sensing uses regular pixel matrices (Picture Element) with associated quantitative values (e.g. digital numbers, radiance, reflectance) which constitute a direct measurement of the variation of electromagnetic radiation (EMR) after interaction with the target. The variations in pixel values may be considered in terms of their... |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: ASTER; Landscape metrics.. |
Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/952223 |
| |
|
| |
|
| |
|
|
NICOLELLA, G.; PEREZ FILHO, A.; SOUZA, M. D. de; FERRACINI, V. L.. |
The use of simulation models is probably the most efficient means for predicting the behavior of pesticides in the soil-plant-water system. The CMLS (Chemical Movement in Layered Soils) simulation model for predicting the fate of pesticides was used for studying the behavior of tebuthiuron, a herbicide used in sugar cane crops, from a sampling grid with 111 sampling points 200 m apart from one another and encompassing three types of soil: Ustic Quartzipsamment, Rhodic Hapludox and Typic Hapludox, all with medium and clay textures. The 373 points assessed by the simulator, generated from samples coming from the original grid and through the geostatistical methods of variography and ordinary kriging, returned the depth values reached by the herbicide after... |
Tipo: Separatas |
Palavras-chave: Comportamento; Aplicação; Tebutiuron.; Defesa vegetal; Pesticida; Herbicida; Águas Subterrâneas; Contaminação; Modelo de Simulação.. |
Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/15444 |
| |
|
| |
|
| |
|
|
|