To reserve forest land and improve people income, Perum Perhutani Sumedang regency together with people surrounding forest, makes a program to utilize the forest by using agroforestry system. For that reason, researcher is interested in doing a research about the type of crops that can optimize forest land. The objective of the research is to analyze about the utilization of forest land optimally and improve social welfare of the people surrounding the forest in Cipadayungan,
Sumedang. The result of the research indicates that the degree of erosion in the research field at the slope of (0-<15)% and (15-<30)%, are still under tolerated erosion but the slope of .30% is beyond tolerated erosion. Type of crops that can be used to utilize the land without being clearing grass growing on the forest floor are vanilla and coffee. Those plants are productive crops, while grass can protect the land against erosion.
Keywords: Optimal, forest, agroforestry, erosion, social welfare