Dating service xa0 dendrochronology crossdating
Formal and informal interviews with government officials provided the official perspective on the nomad\x92s strategy of pastoral production.
Local xiang records provide longitudinal information on changes in herd size for each household since 1981.
Annual precipitation is ~200 mm for the region and is monsoonal (estimated from graphed annual precipitation averages in Ren et al. About 75% of the annual average occurs in June through August (estimated from graphed monthly precipitation averages cited in Geelan & Twitchet 1974), often in the form of sudden snow- and hailstorms.
The anthropological participant observation method was used in each encampment, and in-depth, open-ended interviews and reinterviews with every household head in Phala provided information on a range of topics including herd management, economics, household composition, perception of the environment, and the operations of this system during the traditional, pre-1959 period.
Livestock diets were evaluated by obtaining hand-plucked forage selection samples for each livestock species from 15 daily, 30-minute foraging bouts between 1 July and 4 August 1987; and then using a \x93bitecount\x94 technique similar to methods employed in studies of Ngisonyoka pastoralists in Kenya (Coppock et al. True livestock diets tend to be of higher quality than hand-plucked duplicates (Van Dyne & Torrell 1964).
The cell wall fraction of dietary forage was determined by detergent techniques (Van Soest & Wine 1967).
The government of Tibet believes the answer to this question is yes, and it has given regional authorities the discretion to implement programs to restrict livestock population growth through either periodic forced livestock culling or permanent per capita livestock limits.
In June 1987, the Tibetan regional government in Ngamring county decreed that its subordinate nomadic pastoral and agricultural communities must reduce their livestock numbers by December of that year.