Abstract
The development of new techniques that facilitate environmental planning are needed, so this work presents a new methodological approach : the Model of Stability of Soil Science (MES) , which uses data obtained by remote sensing in order to support environmental planning . The technique was applied in the city of Costa Rica - MS with Landsat generating an environmental zoning proposal for the study area. The letter slope was drawn through the SRTM digital elevation model. The Charter Fitness of Lands (agricultural capability of the soil) was obtained from the Multi Referral Atlas of the State of Mato Grosso do Sul linear spectral mixture model to derive vegetation fraction image ( letter of vegetation cover ) was used . With this data set we applied the MES through map algebra, which uses the overlay of information layers slope, agricultural soil suitability and land cover. Data obtained via MES were compared with those observed in the field. Thus it can be seen that the MES was efficient in assessing the areas most vulnerable to the erosive action, moreover, proved to be an efficient tool for decision making.
Highlights
Modelo de Estabilidade dos Solos a Erosão Leandro Tsuneki Higa; Alessana Franciele Schlichting; Thais Gisele Torres Catalani; Alfredo Marcelo Grigio; Roberto Macedo Gamarra & Antonio Conceição Paranhos Filho
The development of new techniques that facilitate environmental planning are needed, so this work presents a new methodological approach : the Model of Stability of Soil Science (MES), which uses data obtained by remote sensing in order to support environmental planning
The technique was applied in the city of Costa Rica - MS with Landsat generating an environmental zoning proposal for the study area
Summary
Qualquer alteração nos diferentes componentes da natureza como relevo, solo, vegetação, clima e recursos hídricos, acarreta o comprometimento da funcionalidade do sistema, quebrando o seu estado de equilíbrio dinâmico. Desta forma a estimativa das perdas de solos torna-se relevante no planejamento e no zoneamento da vulnerabilidade ambiental de seus municípios. Na tentativa do aprimoramento da utilização da USLE, Silva et al (2010) utilizaram o modelo de cálculo do fator LS, o Software USLE 2D e um sistema de informação geográfica, constatando que a utilização deste conjunto de ferramentas conseguiram predizer satisfatoriamente a perda de solo, mesmo assim sugeriram novos estudos para sua validação e possível aprimoramento. Além disso, Grigio et al (2004) utilizaram um modelo dinâmico no tempo, para predição de tendências da evolução da paisagem, mostrando a importância da ferramenta para transcender o período atual, possibilitando o planejamento e viabilizando as consequências dos fatores antrópicos. O presente trabalho tem como objetivo apresentar e testar um novo modelo qualitativo de perda de solo por erosão, o Modelo de Estabilidade dos Solos (MES), como ferramenta de planejamento ambiental que utiliza predominantemente dados de sensoriamento remoto
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