Xiao, X., and D. Ojima. Above-ground net primary production was estimated by summing peak live biomass of each of five species categories. With a warm, wet growing season from the end of April to early October, these typical steppe grasslands provide good quality forage for livestock and are used primarily for grazing. The study site has been fenced since 1980 and was lightly grazed before that time.
More detailed information is available in the associated guide document .