Recursos hídricos na Mata Atlântica: estudo de caso do Laboratório de Hidrologia Florestal Walter Emmerich, Cunha - SP Valdir de Cicco 1 Francisco Carlos Soriano Arcova 2 Maurício Ranzini 3 João Batista Amaro dos Santos 4 Maria Cristina Forti 5 1 Instituto Florestal Rua do Horto, 931 - CEP 02377-000 - Horto Florestal - São Paulo - SP, Brasil valdircicco@iflorestal.sp.gov.br 2 Instituto Florestal Rua do Horto, 931 - CEP 02377-000 - Horto Florestal - São Paulo - SP, Brasil fcarcova@iflorestal.sp.gov.br 3 Instituto Florestal Rua do Horto, 931 - CEP 02377-000 – Horto Florestal - São Paulo - SP, Brasil ranzini@iflorestal.sp.gov.br 4 Instituto Florestal Praça São Paulo, 101 - CEP 12530-000 - Cunha - SP, Brasil pesmcunha@ig.com.br 5 Instituto Nacional de Pesquisas Espaciais Av. dos Astronautas, 1758 – CEP 12227-010 - São José dos Campos - SP, Brasil crisforti@ig.com.br Abstract. The Forestry Institute of São Paulo State have been studying the water and forest relationships in Laboratory of Forest Hydrology Walter Emmerich at Cunha in the Serra do Mar State Park in the last three decades. From the obtained long-term data the knowledge about the hydrologic cycle and hydrochemical processes are being deepen within the Atlantic Forest. The starting point of these researches is the named “hydrometric method of experimental catchments” which monitors three catchments covered with secondary natural forest. In this paper it is presented a synthesis of the relevant results obtained up to now whose objective is to show the importance of the Atlantic Forest conservation for the maintenance of the Serra do Mar mountain range water resources. Palavras-chave: hidrologia, hidroquímica, Alto Vale do Paraíba do Sul, Serra do Mar, Mata Atlântica. 25 próximo artigo artigo anterior Anais I Seminário de Recursos Hídricos da Bacia Hidrográfica do Paraíba do Sul: o Eucalipto e o Ciclo Hidrológico, Taubaté, Brasil, 07-09 novembro 2007, IPABHi, p. 25-33.