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| Salemi,Luiz Felippe; Lins,Silvia Rafaela Machado; Ravagnani,Elizabethe de Campos; Magioli,Marcelo; Martinez,Melissa Gaste; Guerra,Fernando; Vidas,Natassia Bonini; Fransozi,Aline; Ferraz,Silvio Frosini de Barros; Martinelli,Luiz Antonio. |
| Abstract In this article, by using carbon stable isotopes, we assessed the past and present land use influences that riparian areas are subject within agricultural landscapes. Emphasis is given to the understanding of the effects of the 2012 Brazilian Forest Act on such areas. We selected five riparian areas within a highly C4 dominated agricultural landscape. Three of them had 30 meters native riparian forest buffer (NRFB) and two of them had 8 meter and no NRFB. We used three 100 meter-transects located 5, 15 and 30 meters relative to stream channel to obtain soil samples (0 - 10 cm). All riparian areas presented soil carbon isotopic signatures that are not C3 (native forests) irrespective of having or not 30 meters NRFB. Two cases presenting less than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Watershed; Soil degradation; Organic matter; Sediment; Carbon cycling. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000200210 |
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| Nogueira,Sandra Furlan; Paula,Alessandra Monteiro de; Pereira,Bruno Fernando Faria; Salemi,Luiz Felippe; Fonseca,Adriel Ferreira da; Montes,Célia Regina; Victoria,Reynaldo Luiz. |
| This study investigated the microbial metabolism in Bermuda-grass Tifton 85 areas after potable-water and effluent irrigation treatments. The experiment was carried out in Lins/SP with samples taken in the rainy and dry seasons (2006) after one year and three years of irrigation management, and set up on an entirely randomized block design with four treatments: C (control, without irrigation or fertilization), PW (potable water + 520 kg of N ha-1 year-1); TE3 and TE0 (treated effluent + 520 kg of N ha-1 year-1) for three years and one year, respectively. The parameters determined were: microbial biomass carbon, microbial activity, and metabolic quotient. Irrigation with wastewater after three years indicated no alteration in soil quality for C and ET3; for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reuse; Irrigated agriculture; Microbial respiration; Cmic; QCO2. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000300007 |
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