Utilização de P-Index em uma bacia hidrográfica através de técnicas de geoprocessamento

Content Provider	Semantic Scholar
Author	Lopes, Fabíola Merten, Gustavo H. Franzen, Melissa Giasson, Élvio Helfer, Fernanda Cybis, Luiz Fernando
Copyright Year	2007
Abstract	Due to problems caused by eutrophication of lakes and reservoirs, the identification of phosphorus source areas is important for planning the control of agriculture-related water pollution. This study applied a method designed to identify these phosphorus source areas, called P-Index, which is based on combining data layers related to soil phosphorus availability and phosphorus transport processes. The method was used for studying the Salto Reservoir waterbasin, in Sao Francisco de Paula, in the State of Rio Grande do Sul, Brazil. Data related to phosphorus availability, intensity of transport processes, and distance to waterways were combined to yield a map of phosphorus contribution classes, which showed that almost the entire study area was considered to have low phosphorus contribution potential. A few small areas, corresponding to potato and garlic fields that received heavy chemical fertilization, were classified as having high phosphorus contribution potentials.
Starting Page	312
Ending Page	317
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1590/S1415-43662007000300011
Volume Number	11
Alternate Webpage(s)	https://lume.ufrgs.br/bitstream/handle/10183/107293/000592902.pdf?isAllowed=y&sequence=1
Alternate Webpage(s)	http://www.scielo.br/pdf/rbeaa/v11n3/a11v11n3.pdf
Alternate Webpage(s)	https://doi.org/10.1590/S1415-43662007000300011
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article