Caracterização e classificação de solos urbanos em Campina Grande do Sul, Estado do Paraná

Abstract

ARTIGO hhtp::/dx/doxdor: h 10x4322:ocax2012x049 ARTIGO RESUMO: Os solos urbanos constituem volumes em plena expansão no mundo, com alterações que os distinguem dos solos de áreas rurais ou naturais. A importância do estudo desses solos se reflete na obtenção de informações para o planejamento urbano, os estudos hidrológicos e a arborização urbana. O objetivo deste estudo foi caracterizar e classificar os solos urbanos do bairro Jardim Paulista em Campina Grande do Sul, estado do Paraná. Como padrão de amostragem, observou-se o lote central ao norte de cada uma das 105 quadras existentes. Em 91 desses lotes, foram coletadas amostras para caracterização granulométrica, pH em CaCl 2 e densidade do solo e das partículas. Os solos antropizados foram classificados de acordo com uma proposta desenvolvida pela Embrapa Florestas.Os resultados encontrados permitem concluir que: a) muitas áreas de solos urbanos estudados apresentam indícios de processos de compactação superficial, porém não apresentam expressiva alcalinização da camada superficial; b) os principais processos de antropização encontrados nesses solos urbanos são a adição de outros solos ou materiais, e a decapitação de horizonte(s); c) os solos do Jardim Paulista podem ser enquadrados predominantemente na classe dos Antropossolos Sômicos. ABSTRACT:The urban soils are volumes that rapidly expanding worldwide, with changes that distinguish soil from rural areas or natural. The importance of studying these soils is reflected in obtaining information for urban planning, hydrological study, and urban areas. The objective was to characterize and classify the soils of the urban Jardim Paulista in Campina Grande do Sul/PR. The sampling pattern observed the lot north of each batch of the 105 existing blocks. In 91 of these plots were also collected samples for particle size analysis, pH in CaCl 2 , bulk and particle density. Anthropized soils were classified according to a proposed classification developed by Embrapa Florestas. The results showed that: a) many areas of the urban soils studied show signs of surface compaction processes, but do not show significant alkalization of the surface layer, b) the main processes of anthropization found in these urban soils are the addition of other soils or materials and beheading horizon (s), c) soils in Jardim Paulista can be classified predominantly in the class of Antropossolos Sômicos.Caoacheoozaçãd e classofocaçãd /e sdlds uobands

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

“…Lima [71] investigated oxisol (LV), entisol (N), and vertisol (V) soils with predominance of fines from the state of Paraná (south Brazil), with CEC values of 13, 23, and 17 cmol c .kg -1 , respectively. The adsorption parameters for Cu 2+ were as follows: K f = 0.69 L/g, 1 / n = 0.28 , K L = 0.15 L/mg, and b = 2.3 mg/g for soil LV; K f = 1.38 L/g, 1 / n = 0.23 , K L = 0.3 L/mg, and b = 3.5 mg/g for soil N; and K f = 2.41 L/g, 1 / n = 0.13 , K L = 0.8 L/mg, and b = 4.0 mg/g for soil V. For a young residual soil derived from granitic gneiss from the state of São Paulo (southeastern Brazil) classified as MH, Stuermer [72] obtained K f = 4.5 mL/g and …”

Field Description and Identification of Diagnostic Qualifiers for Urban Soils in Brazil

“…Due to the lack of standard procedures for the description and collection of urban soils, which are generally affected by anthropogenic alterations, this study proposed the organization of a protocol for describing urban soils (Table 1). The proposal was based on adaptations in the procedures found in the Manual of Description and Collection of Soils (Santos et al, 2015), Pedology Technical Manual (IBGE, 2015), SiBCS (Santos et al, 2018), all of them designed for natural soils, where attributes also important for an urban situation were used, for example, color, texture, structure, depth of soil layer, and percentage of Curcio et al (2004) and Santos Junior and Lima (2012) were also taken into account. The diagnostic qualifiers were drawn from the WRB system (IUSS Working Group WRB, 2015) and some were identified in fieldwork.…”

“…(2) Based on Curcio et al (2004) and Santos Junior and Lima (2012). (3) Based on the experience of this study.…”