抄録
Generally, pastoralists, whose main economic activity is subsistence pastoralism, usually depend also upon foraging activities, such as hunting, gathering and/or fishing. For the Siberian Nenets reindeer pastoralist foraging activities, besides reindeer herding, have been an important factor for their surviving strategy. Such situation is more applicable for the individual reindeer herders who count some thousands peoples in Yamal-Nenets Autonomous District.
Among foraging activities for the Tundra Nenets fishing and game hunting are important. Especially fishing is important for the resource of annual food intake, and waterfowls and some other wild animals are also meaningful for the resource of seasonal food or cash income.
However, in this region the hydrocarbon extracting activity has served as unstable，if not destructive，factors for the surviving of the indigenous pastoralists. On the other hand，the anthropogenic climatic change also is one of the anxious factors which might have given negative impacts on the population of wild animals and vegetation cover as feeding resources for people and reindeer. The research activity in this direction is restricted in places and numbers. at the same time further research is necessary about Indigenous Knowledge on their environment change with consideration to their effective mobile lifestyle．
