has output agricultural field cropland biome village biome rangeland biome land conversion process agricultural land conversion process agricultural land conversion This process typically relies on the conversion and development of forests, savannas or grassland. Creation of farmland from wasteland, deserts or previous impervious surfaces is considerably less frequent because of the presence of degraded soil or the lack of fertile soil. A land conversion process during which terrestrial ecosystems are altered to facilitate agricultural activities such as crop cultivation or the rearing of livestock.