"soy and palm oil conversion"; "pastoral use"

Can please someone explain what it means? The phrase: "[in the countries with high rates of carbon emission from land use] 1.5 acres of forest land could be worth as much as USD 25,000 in terms of carbon sequestration at a carbon price of USD 35-50. Equivalent returns from the land would range from USD 2 for pastoral use, to over USD 1,000 for soy and palm oil conversion" Thanks!