What people are saying - Write a review
We haven't found any reviews in the usual places.
Welcomethe Society for Range ManagementRobert M Williamson
Worldwide Opportunities and ChallengesR A Perry
Simulation of the Impact of Different Levels of Human Pressure on the Grazing Lands of Southern Tunisia
88 other sections not shown
Other editions - View all
activities Agricultural animals annual arid associated average biomass cattle caused changes climate Conservation continued countries cover crop Department determined dominant drought ecological economic effects established estimated Experiment factors fire forage Forest germination goats grass grassland grazing groups growing growth herd important improvement increased indicate Journal land less limited livestock means measured method moisture mountain natural observed occur pasture percent period plants plots population potential practices present problems production rainfall Range Management rangeland reduced region relation relatively Report Research root samples season seed seedlings Service sheep showed shrubs slopes soil South species standing Station summer surface Table temperature tion treatment trees types United University values vegetation watersheds weight western winter yield zone