Evolution of mortality in the environment of Buryat semeisky people in the second half of the XX and the beginning of the XXI century

Demographic potential of ethno groups, their quantity, birth up and keeping depend on the level of population mortality. Ethno group of semeisky people has been living in Buryatiya about two and half centuries and it is the greatest part of the whole Buryat population. Last ten years, groups which live especially in villages regions so as Bichurcky, Tarbagataisky and Mukhorshibirsky began quickly being less. It causes by a tow level of birth and by a high level of population mortality. From the middle of the past century remarkable changes appeared in the evolution of morality among semeisky people. In 1950-60-th it began to grow, in 1980-th there was the stability of percents, but in 1990-th and especially in 2000-th years it has grown three times more than in 1950-th. The structure of mortality has also changed. It has become more often among babies, children and youngers, time of life became shorter, health was getting worse, and illnesses among the population has grown very much and etc. These ethnocultural, ecological, social-economic changes influenced on mortality and health of semeisky people and became the cause of complicated complexes in territorial and social-medical questions. The tendency given in this article are rather stable, because they have been developing during 20-40 years. A perspective of depopulation of ethnocultural group is impossible to stop. This fact for Buryat Republic and Russian territory in whole from the point of view of it development.