Drylands cover about 40% of the earth’s land surface and make a substantial contribution to the Gross Domestic Product (GDP) of most developing countries of the world. According to UNDP’s Human Development Index, over 50% of the most disadvantaged countries are in dryland Africa. In Kenya, drylands constitute over eighty-nine (89%) of the country’s land surface area and are home to approximately 35% of the human population, seventy percent (70%) of the national livestock herd, and most of the wildlife and biodiversity.