描述:
he paper studies from the situation and feature of Agriculture
Tri-dimension Pollution in Yellow River Basin areas, and divides it into several regions according to
basin’s pollution feature by adopting the method of searching documents , research, systems analysis,
quantitative and qualitative analysis and so on, and analyzes the problem of Agriculture Tri-dimension
Pollution in Yellow River Basin areas from the view of tri-dimension and system by use of the theory of
Environmental value, Technology Value, Ecology, Circular economy , uses System Dynamics to track
dynamically the change in the future of the various variables in different modes and constructs the
system mode of agricultural tri-dimension pollution in Yellow River Basin, and simulates the system;
描述:
isasters in China,
the earthquake caused the largest number of deaths accounted for 54% of the total
number, and 80-90% of China's earthquake occurred in rural areas.
描述:
duction in the area is
restricted by disadvantageous natural resources and environmental conditions,
including low arable land area per capita, frequent drought events and a landscape
dominated by mountains. Forage crop rotation systems could improve soil fertility,
increase crop外eld and provide quality forage supplies for livestock production.
Additionally, their adoption is considered a suitable means to advance sustainable
agriculture development. In this study, the role and status of forage crop rotations in
Tianshui city were studied.
描述:
est region,
which c
ombined with the
water-saving, agricultural soil and water conservation techniques, and then taken "
drought
resistance, reduce erosion, increase efficiency" as a principle.
描述:
mic
development. The fourth chapter discusses the change of marriage culture from
aspects of ethnic intermarriage, uxorilocal marriage and village marriage. The
fifth chapter mainly investigates and analyzes present situation and characters
of Han immigrants' religion belief on Tibetan Buddhism, discusses fusion
between Han's folk custom and Tibetan Buddhism. The sixth chapter detailed
describes the process of funeral ritual, and illustrates characters and function of
funeral ritual.
The seventh chapter chooses six variables, namely inhabitation pattern,
individual communication, language use, religion belief, national consciousness
and social distance, to comprehensively considerate ethnic relation, furthermore
concludes the characters of ethnic relation and puts forword several
suggestions.
The eighth chapter is concluding remarks to this topic, which discusses
characters and trends of Han immigrants' cultural change, and concludes
characters,influencing factors and tendency of ethnic relations in Haixi
immigrant region.
Haixi Autonomous Prefecture of Qinghai province lies at northern
Qinghai-Tibet Plateau. Most areas are alpine and hypoxia, and natural
condition is very bad, which is unfit for agriculture production, so it has been
the habitation of nomadic minority groups. As the border area, the past
dynasties continuously recruited and migrated Han immigrants to Haixi region
to open up waste land and garrison the frontier in order to maintain national
stability and secure territorial integrity. For thousands years, in order to
improve living environment, develop economy and build multiple cultural