描述:
f the earth's
surface.Therefore,it has great benefit for clarifying the mutual action between human
beings and land and their change principles in the historical period when the land use
and the land cover changes are chosen as the study perspective.
描述:
cyclopedia of west China”.
Being a type of non-material culture heritage shared by many nationalities, Huaer is a
mark of spoken arts in west China, which is of great value for art appreciation and
academic research.
描述:
cyclopedia of west China”.
Being a type of non-material culture heritage shared by many nationalities, Huaer is a
mark of spoken arts in west China, which is of great value for art appreciation and
academic research.
描述:
cultivation development process to
be especialty difficult, frequent occurrence of multiple disasters, the development of the
Northwest Territories are important constraints, the reduction of agricultural land, agriculture,
the substantial loss of population, agriculture, infrastructure damage, agricultural ecological
environment and the poor. Based on this, the north-west areas of the process of agricultural
drought introduced varieties, select a variety of agricultural disaster mitigation technology. In
this paper, the Northwest Territories to explore the Ming and Qing Dynasties of natural
disasters on agricultural production hazards, damage the rural economy and livelihood of the
affected farmers. By the six parts.