31. In the Para area the Kayap? like most tribes of this region practiced intensive agriculture or clearing cultivation. 32. The region's soils are renowned for their fertility, and intensive agriculture is the mainstay of the local economy. 33. Practicing this style of intensive agriculture with short periods of soil rest leads to soil degradation and desertification. 34. The remaining 30 % is also suited for intensive agriculture but with soil conservation and erosion control measures. 35. The river valley was well suited for intensive agriculture , while livestock could be kept at the higher altitudes. 36. A " civilized " way of life is ultimately linked to conditions coming almost exclusively from intensive agriculture . 37. Over 80 % of the land is used for intensive agriculture , and less than 3 % are forests. 38. Ornate shrews are also less common or have been eliminated from areas of intensive agriculture in central California. 39. Tourism and traditional cattle grazing, have replaced the intensive agriculture as the primary economic use of the land. 40. In the rural areas, intensive agriculture was practiced over an area of more than to feed the city.
