
v3. Include a new soil data base (ibge) v2. Update considering two options of soil database (ufv and embrapa). v2. We also fix the potential for agricultural use weight associated to the slope classes. [en] To compute the potential for conservation use, we implemented the methodology PUC which assigns to the lithology levels, soil class, and slope a score between 1 and 5. The score reflects the potential for water recharge, agricultural use, and resistance to erosion (Costa et al., 2017). The potential for agricultural use is associated with drainage, fertility, and effective soil depth. Drainage is related to the capacity of supplying water and oxygen to the soil; fertility is related to the natural availability of the soil to provide nutrients, and the effective depth is related to space for the development of the root system and internal drainage of the profile. The water recharge and the erosion resistance took into account the runoff rate and the opportunity time to water infiltration. [pt] Para realizar o diagnóstico do potencial de uso conservacionista foi utilizado o método PUC que classifica o terreno atribuindo uma nota que varia entre 1 e 5 com base em informações de litologia, classe de solo e declividade. Esta nota reflete o potencial de recarga hídrica, o potencial para uso agropecuário e a resistência à erosão. O potencial de uso agropecuário é associado à drenagem, fertilidade e profundidade efetiva. A drenagem, por sua vez, está relacionada à capacidade de suprimento de água e de oxigênio para o solo; a fertilidade está relacionada à disponibilidade natural de nutrientes; e a profundidade efetiva está relacionada ao espaço para o desenvolvimento do sistema radicular e drenagem interna do perfil. A recarga hídrica e a resistência à erosão levaram em consideração a velocidade de escoamento e o tempo de oportunidade de infiltração de água.
Conselho Nacional de Desenvolvimento Científico e Tecnológico (Processes 403297/2016-8, 301661/2019-7, 306386/2022-4). Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG; Process APQ-00943-21 and APQ-00185-22). Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Brasil (CAPES; Finance Code 001);
water recharge, soil conservation, agriculture
water recharge, soil conservation, agriculture
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