Malaysia contains 7,605,000 hectares of arable and permanent cropland. The inhabitants live in permanent villages surrounded by arable fields on irrigated terraces. There was a landscape of arable, pasture and managed woodland. Around two thirds of production is devoted to livestock, one third to arable crops. Agriculture is limited by the lack of water and arable land. "First-generation" or conventional biofuels are biofuels made from food crops grown on arable land. Field cultivators are used to complete tillage operations in many types of arable crop fields. Central Tanzania is a large plateau, with plains and arable land. Two-thirds of production is devoted to livestock, the other to arable crops. It also has large areas of arable land and water. Dikes are commonly used for reclamation of arable land from a shallow lake. Somalia is a semi-arid country with about 1.64% arable land. Thus, the total of arable land amounted to . Around two-thirds of production is devoted to livestock, one-third to arable crops. It was used on open fields for arable farming.