Dynamics of deforestation in Amazônia and its impacts in hydrology: Machadinho River basin - Rondônia/Brazil
DOI:
https://doi.org/10.5902/1980509835333Keywords:
Impactos antrópicos, Região Amazônica, Hidrologia, Modelagem hidrológicaAbstract
The Machadinho river basin is an example of disorderly occupation present in the Amazon region, where large areas were deforested and consequently the forest was converted into pastures and urban centers. The present work has the objective of analyzing the impacts in hydrology (streamflows, precipitation and evapotranspiration) of the Machadinho river basin due to its dynamics of anthropic occupation. First, the land cover change was analyzed using Landsat 5-TM images for the years 1984, 1997 and 2011. The streamflow variable was evaluated for its sensitivity by using the SWAT model to determine net discharge by setting the weather patterns and by varying the historical land cover scenarios. The precipitation, obtained by data from the CHIRPS for the period from 1981 to 2017, and evapotranspiration, estimated by the SSEBop data between 2002 and 2017, were treated as distributed geospatial variables in the basin, with behavioral trends of their corresponding historical series measured by means of the Mann-Kendal test. The results showed that the occupation of the basin occurred in a disorderly way, where the pasture area increased from 2.6% in 1984 to 45.9% in 2011, with the highest conversion observed at the spring of the main water body, which accounted for a higher flow production by the SWAT model that adequately described the variable. In addition, trends of rainfall reduction were observed in wetter months, while trends of evapotranspiration elevation were detected in warmer months. Therefore, it is noteworthy to register that deforestation in the region tends to reduce water availability to the basin.Downloads
References
ARANCIBIA, J. L. P. Impacts of land use change on dry season flows across the tropics. 2013. 128f. Tese (Doutorado), Universidade de Londres, Londres, 2013.
BALDISSERA, G. C. Aplicabilidade do modelo de simulação hidrológica SWAT (Soil and Water Assessment Tool), para a bacia hidrográfica do rio Cuiabá/MT. 2005. 178f. Dissertação (Mestrado em Física e Meio Ambiente), Universidade Federal do Mato Grosso, Cuiabá, Mato Grosso, 2005.
CORREA, S. W. et al. Multi-decadal Hydrological Retrospective: Case study of Amazon floods and droughts. Journal of Hydrology, [s.l], v. 549, p.667–684, 2017.
DINKU, T. et al. Validation of the CHIRPS satellite rainfall estimates over eastern Africa. Quarterly Journal of the Royal Meteorological Society, [s.l.], p.1–21, 2018.
FUNK, C. et al. The climate hazards infrared precipitation with stations—a new environmental record for monitoring extremes. Scientific Data, [s.l.], v. 2, n.15, 2015.
GOMES, F. B. Modos de ocupação no município de Machadinho D'Oeste /RO e suas relações com equilíbrio natural da paisagem e ajustes morfodinâmicos. 2009. 103f. Dissertação (Mestrado em geografia), Fundação Universidade Federal de Rondônia – UNIR, Porto Velho, 2009.
GREEN, C. H.; VAN GRIENSVEN, A. Autocalibration in hydrologic modeling: Using SWAT2005 in small-scale watersheds, Environmental Modelling & Software, [s.l], v.23, p.422 – 434, 2008.
IBGE. Instituto Brasileiro de Geografia e Estatística. Cidades por Unidades Federativas. Disponível em: <http://www.ibge.gov.br/cidadesat/topwindow.htm?1>. Acesso em: 20 jun. 2014.
KENDALL, M. G. Rank Correlation Methods. Londres: Charles Griffin, 234p., 1975.
KENNEDY, J.; EBERHART, R. C. Proceedings of IEEE International Conference on Neural Networks., Nova Iorque: Piscataway, 1948p., 1995.
KRYSANOVA, V.; MULLER-WOHLFEIL. D.; BECKER, A. Development and test of spatially distributed hydrological water quality model for mesoscale watersheds. Ecological Modeling, [s.l], v.106, n.2, p.261-289, 1998.
LANDS, J. R.; KOCH, G. G. The measurement of observer agreement for categorial data. Biometrics, Washington, v. 33, p. 159-154, 1977.
Lillesand, T.M. et al. Remote sensing and interpretation. 5ed. Madison: Wiley, 2004. 763p., 2004.
LINHARES, C.A. Influência do desflorestamento na dinâmica da resposta hidrológica na bacia do Rio Ji-paraná/RO. 2005. 220f. Tese (Doutorado em Sensoriamento Remoto), INPE, São José dos Campos, 2005.
LU, E. et al. The Relationships between Climatic and Hydrological Changes in the Upper Mississippi River Basin: A SWAT and Multi-GCM Study, Journal of Hydrometeor, [s.l.], v. 11, p. 437–451, 2010.
MANN, H.B. Nonparametric tests against trend. Econometrica, [s.l.], v.13, p.245-259. 1945.
NEETI, N; EASTMAN, J.R. A Contextual Mann-Kendall Approach for the Assessment of Trend Significance. Transactions in GIS, [s.l], v.15, n.5, p.599-611. 2011.
PEDLOWSKI, M. A., DALE, V. H., MATRICARDI, E. A. T., SILVA, E. P. Patterns and impacts of deforestation in Rondonia, Brazil. Landscape and Urban Planning, [s.l.], v. 38, n. 3–4, p. 149–157, 1997.
ROBERTS, D. A. et al. Large area mapping of land-cover change in Rondônia using multitemporal spectral mixture analysis and decision tree classifiers. Journal of Geophysical Research, [s.l], v. 107, n. 20, p. 40–48, 1997.
RODRIGUEZ, D. A., TOMASELLA, J., LINHARES, C. Is the forest conversion to pasture affecting the hydrological response of Amazonian catchments? Signals in the Ji-Parana Catchment, Hydrological Processes, [s.l], v. 24, n. 10, p. 1254–1269, 2010.
SWANN, A. L. S. et al. Future deforestation in the Amazon and consequences for South American climate. Agricultural and Forest Meteorology, [s.l.], v. 214, p. 12–24, 2015.
SENAY, G.B. et al. Evaluating the SSEBop approach for evapotranspiration mapping with Landsat data using lysimetric observations. Hydrol. Earth Syst. Sci. Discuss, [s.l.], v. 11, p. 723–756, 2014.
SENAY, G. B. et al. A coupled remote sensing and simplified surface energy balance approach to estimate actual evapotranspiration from irrigated fields. Sensors, [s.l], v. 7, p. 979-1000, 2007.
SENAY, G. B. et al. Operational evapotranspiration mapping using remote sensing and weather datasets: a new parameterization for the SSEB approach. Journal of the American Water Resources Association, [s.l.], v. 49, p. 577- 591, 2013.
SOUZA, V. A. S. Avaliação Hidrossedimentológica Com Suporte Do Modelo SWAT Na Amazônia Ocidental – Bacia Do Rio Machadinho/RO. 2015. 210f. Dissertação (Mestrado em Engenharia Civil), Departamento de Engenharia Civil, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 2015.
SOLER, L. S., VERBURG, P. H.. Combining remote sensing and household level data for regional scale analysis of land cover change in the Brazilian Amazon. Regional Environmental Change, [s.l], v. 10, n. 4, p. 371–386, 2010.
VU, M. T.; RAGHAVAN, S. V.; LIONG, S. Y. SWAT use of gridded observations for simulating runoff – a Vietnam river basin study, Hydrology and Earth System Sciences Discussions, [s.l.], v. 8, n. 6, 2011.
ZSEE - Rondônia. Governo do Estado, 2007, Zoneamento Socioeconômico-Ecológico do Estado de Rondônia: Um Instrumento de Gestão Ambiental a Serviço do Desenvolvimento Sustentável de Rondônia. Porto Velho: SEDAM, 2007.
