Data/hora: 01/06/2024 09:35:57

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 26/07/2018
Data da última atualização: | 26/07/2018
Autoria: | SAAD, S. I.; SILVA, J. M. da; SILVA, M. L. N.; GUIMARAES, J. L. B.; SOUSA JUNIOR, W. C.; FIGUEIREDO, R. de O.; ROCHA, H. R. da.
Afiliação: | SANDRA ISAY SAAD, IAG-USP; JONATHAN MOTA DA SILVA, IAG-USP; MARX LEANDRO NAVES SILVA, UFLA; JOAO LUIS BITTENCOURT GUIMARAES, Aquaflora Meio Ambiente; WILSON CABRAL SOUSA JUNIOR, ITA; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; HUMBERTO RIBEIRO DA ROCHA, IAG-USP.
Título: | Analyzing ecological restoration strategies for water and soil conservation.
Ano de publicação: | 2018
Fonte/Imprenta: | Plos One, v. 13, n. 2, e0192325, 2018.
DOI: | https://doi.org/10.1371/journal.pone.0192325
Idioma: | Inglês
Conteúdo: | Abstract: The choice of areas for nature conservation involves the attempt to maximize the benefits, whether by carrying out an economic activity or by the provision of Ecosystem Services. Studies are needed to improve the understanding of the effect of the extent and position along the watershed of restored areas on soil and water conservation. This study aimed to understand how different restoration strategies might reflect in soil conservation and sediment retention. Using InVEST tool, sediment transport was simulated in a small 12 km2 watershed (Posses River, in Southeast Brazil), where one of first Brazilian Payment for Ecosystem Services (PES) projects is being carried out, comparing different hypothetical restoration strategies. With 25% of restoration, sediment export decreased by 78% for riparian restoration, and 27% for the steepest slopes restoration. On the other hand, the decrease in soil loss was lower for riparian restoration, with a 16% decrease, while the steepest slopes restoration reduced it by 21%. This mismatch between the reduction of sediment export and soil loss was explained by the fact that forest not only reduces soil loss locally but also traps sediment arriving from the upper parts of the watershed. While the first mechanism is important to provide soil stability, decreasing the risk of landslip, and to maintain agricultural productivity, the second can improve water quality and decrease the risk of silting, with positive effects on the water reservoirs at the outlet of the watershed. This suggests that Riparian and the Steepest Slopes restoration strategies are complementary in the sense of preventing sediments from reaching the water bodies as well as protecting them at their origin (with the reduction of erosion), so it will be advisable to consider the two types of restoration.
Thesagro: | Água; Bacia Hidrográfica; Conservação do Solo; Preservação da Natureza; Recuperação do Solo; Sedimento.
Thesaurus Nal: | Ecological restoration; Land restoration; Natural resources conservation; Soil restoration; Watersheds.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/180387/1/2018AP11.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16146-1) - UPC - AP - DD -  -  -  - DIS