The Evaluation And Research On Urban Ecological Security Of Urumqi

Ecological security mainly includes two implications: One refers to weather structure and function of the eco-system is perfect or not, the other refers to function of the eco-system can meet the needs of human being's activities. Therefore, urban ecological security can be defined as followed: urban ecological security try its best to create a given condition that urban development of ecological environment has been keeping balance with development of city on current or in futureThe development of the city plays a vital role in the socio-economic prosperity, the creation of social culture and the improvement of human living condition. However the corresponding problems of ecological environment threaten to the development of human beings and their environment. With the socio-economic accelerating development to modernization, urbanization process in china is in highly speed. Urbanization rate will have reached 60% or so by 2025. The persist development's important content is how to insure security to urban ecology. Generally speaking, the urban eco-system, compared with the natural eco-systems, have characteristics such as, too much consumption with energy, high pollution and high consumption of materials but low efficiency, and has vulnerability and instability to some degree. Therefore, it is an extremely essential for the development of urban, district, nation's persist development to strengthen environmental construction of urban ecological and itself's overall ability of the basic construction .With urban ecology's comprehensive analysis at safety diagnosis's index, based on time scale, this article makes a evaluation on regional ecological safety situation, and subsequently come up with countermeasures to current problems about ecological safety in Urumqi, which is essential to ecological city's construction in Urumqi.Based on research on the Urumqi urban ecological security assessment, an ultimate conclusion is obtained:(1) After the standardization of index, ,this article ultimately calculate power weight of each indiex, judge by constructing a matrix ,which can avoid the influence of the idea from the human being to the max extent.(2) The average ecological security index in Urumqi from 2003 to 2007 is 0.62, and the ecological safety has been in a state of security, which hint the urban ecological security alert level in Urumqi has been in the level of alarm. However, the overall trend of ecological security is improving comprarised with previous date.(3) A conclusion can be drawn from the changeable date in the analysis: The main factors which lead to the low level of ecological safety in Urumqi include: GDP energy consumption each unite, the average of green land in public, etc. The foremost aspects can be both GDP energy consumption each unite and the average of green land in public.