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Authors
Abstract(s)
O trabalho foi desenvolvido em parceria com o Instituto da Conservação da Natureza e das
Florestas (ICNF), no âmbto do Habmonte, projeto em curso no Parque Natural de
Montesinho (PNM), uma Área Protegida, localizada no nordeste de Portugal Continental.
Com cerca de 74.200 ha, o PNM abrange a parte norte dos Concelhos de Bragança e
Vinhais, sendo um território de montanha com um conjunto complexo de paisagens
naturais, seminaturais e humanizadas. O trabalho foi realizado em 16 lameiros, de 100
áreas definidas pelo projeto Habmonte, incluídos em 4 categorias, cada uma com 4
repetições: lameiro utilizado com linha de água, lameiro abandonado com linha de água,
lameiro utilizado sem linha de água e lameiro abandonado sem linha de água. Analisou-se
a influência do uso e abandono e da presença ou ausência de linha de água permanente
nos resultados. Os parâmetros estudados foram propriedades físicas (permeabilidade,
densidade, elementos grosseiros) e químicas do solo (porcentagem de matéria orgânica,
soma de bases de troca, capacidade de troca catiônica, P2O5, K2O, pH em água, alumínio),
resultantes da análise laboratorial de amostras colhidas em cada lameiro com quatro
repetições. As amostras para a determinação da densidade aparente, elementos grosseiros
e propriedades químicas foram coletadas em duas profundidades (0-20 cm e 20-40 cm), e
na camada superficial (0-5 cm) para as restantes propriedades físicas. Os resultados
evidenciaram que os lameiros em estado de abandono, quando comparados com os em
uso, apresentaram parâmetros indicadores da qualidade do solo mais favoráveis, como é
o caso do teor de Matéria Orgânica, Densidade Aparente, Soma de Bases de Troca e
Capacidade de Troca Catiônica efetiva.
The work was carried out in partnership with the Institute of Nature Conservation and Forests (ICNF), in the context of the Habmonte project under way in the Montesinho Natural Park (PNM), a protected area located in the northeast of Portugal. With around 74,200 hectares, the PNM covers the northern part of the municipalities of Bragança and Vinhais, being a mountain territory with a complex set of natural, semi-natural and humanized landscapes. The work was carried out on 16 lameiros, from 100 areas defined by the Habmonte project, included in 4 categories, each with 4 repetitions: lameiro used with a water line, lameiro abandoned with a water line, lameiro used without a water line and lameiro abandoned without a water line. The influence of use and abandonment and the presence or absence of a permanent water line on the results was analyzed. The parameters studied were physical (permeability, density, coarse elements) and chemical properties of the soil (percentage of organic matter, sum of exchangeable bases, cation exchangeable capacity, P2O5, K2O, pH, aluminum), resulting from laboratory analysis of samples collected in each lameiro. The samples for the determination of bulk density, coarse elements and chemical properties were collected at two depths (0-20 cm and 20-40 cm), and in the surface layer (0-5 cm) for the remaining physical properties. The results showed that lameiro in a state of abandonment, when compared to those in use, presented more favorable soil quality indicator parameters, such as the organic matter content, bulk density, sum of exchangeable bases and effective cation exchangeable capacity.
The work was carried out in partnership with the Institute of Nature Conservation and Forests (ICNF), in the context of the Habmonte project under way in the Montesinho Natural Park (PNM), a protected area located in the northeast of Portugal. With around 74,200 hectares, the PNM covers the northern part of the municipalities of Bragança and Vinhais, being a mountain territory with a complex set of natural, semi-natural and humanized landscapes. The work was carried out on 16 lameiros, from 100 areas defined by the Habmonte project, included in 4 categories, each with 4 repetitions: lameiro used with a water line, lameiro abandoned with a water line, lameiro used without a water line and lameiro abandoned without a water line. The influence of use and abandonment and the presence or absence of a permanent water line on the results was analyzed. The parameters studied were physical (permeability, density, coarse elements) and chemical properties of the soil (percentage of organic matter, sum of exchangeable bases, cation exchangeable capacity, P2O5, K2O, pH, aluminum), resulting from laboratory analysis of samples collected in each lameiro. The samples for the determination of bulk density, coarse elements and chemical properties were collected at two depths (0-20 cm and 20-40 cm), and in the surface layer (0-5 cm) for the remaining physical properties. The results showed that lameiro in a state of abandonment, when compared to those in use, presented more favorable soil quality indicator parameters, such as the organic matter content, bulk density, sum of exchangeable bases and effective cation exchangeable capacity.
Description
Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
Keywords
Matéria orgânica Pastagem natural Propriedades físicas e químicas