Caracterização de APPs em três propriedades rurais às margens do Ribeirão Três Bocas, Londrina, Paraná, que passaram por restauração há 04 anos
After lengthy debate, the Brazilian Forest Code still requires the environmental recovery of permanent preservation areas (APP) and legal reserve. In 2010, small farms recomposed their APP throughout the total planting at 30m range on the banks of Ribeirão Três Bocas, Londrina, assisted by a city pr...
| Autor principal: | Luiz, Junio da Silva |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/12044 |
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| Resumo: |
After lengthy debate, the Brazilian Forest Code still requires the environmental recovery of permanent preservation areas (APP) and legal reserve. In 2010, small farms recomposed their APP throughout the total planting at 30m range on the banks of Ribeirão Três Bocas, Londrina, assisted by a city program subsidized by the prosecution of the environment. The objectives of this study were to characterize the development of three APPs in restoration using ecological indicators of vegetation structure and soil quality. The Ecological Park Dr. Daisaku Ikeda was chosen as a reference area to characterize edaphic aspects. In each property were installed 4 plots of 9x18m, where all the planted trees were followed to determine: the species, their height, their successional category and consequent determination of richness, rate mortality and distribution of plants height. It was also determinated the percentage of crown cover, by the line intersect method. In each farm were also collected soil samples in 12 points for chemical characterization of soil. The remaining soil was used for the Cajanus cajan cultivation (pigeon pea) aiming to determinate the presence of spores rhizobia through nodulation. The richness in each property ranged from 20 to 44, the lowest mortality rate was 1.9% (APP L) while the highest was 25.9% (APP B) that determined current densities from 1,805.6 to 4,012.3 ind./ha, resulting of a small spacing between the plants. The pioneers trees were predominant in two properties (APP L e APP B), although the difficulty for identifying some species masked the analysis. The property with better distribution of plant height (APP L) also had the highest percentage of crown cover (201.9%) and the highest values of K and P in the soil. Moreover, the two properties with lower value of soil coverage (75.8 and 115.3%) showed similar levels to the chemical elements except for Fe, which was much larger in one of them (APP B). The property that showed of greater crown cover (APP L) also provided the soil in which Cajanus cajan roots had the smaller nodules formation. The other hand, these plants grew more than those grown in soils derived from the other two properties (APP G e APP B). The results of the vegetation structure indicated that the restoration of two out of three properties (APP G e APP B) require complementary actions, such as aggregation with seedlings from initial succession species density and control of competitors (grasses). |
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