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GIS of Baoshan City, land and ecological environment vulnerability assessment

Author: RenZhiWu
Tutor: HuangYiZhong
School: Kunming University of Science and Technology
Course: Management of land resources
Keywords: land ecological environment vulnerability evaluate countermeasures Baoshan
CLC: X826
Type: Master's thesis
Year: 2011
Downloads: 26
Quote: 0
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Abstract


Baoshan is in hengduan mountains ZongGu south western, natural and geographical environment and conditions are complex, natural and geographical environment and conditions are complex, to bring to bring the corresponding complexity and rich diversity for land use. With the development of social economy, land use and environmental problems have become increasingly prominent, restricting the sustainable development of Baoshan.It is very necessary to research the land ecological environment. This article evaluates frangibility of land ecological environment, through systematical analysis the main land ecological environment factors and their effect of Baoshan, puts forward the countermeasures and measures for the sustainable use and protection of Baoshan land ecological environment.To provide scientific basis for the decision-making of the land use and ecological environment construction of Baoshan,make the land use of Baoshan more reasonable, realize land use and ecological environment win-win situation.This thesis combine "environmental assessment of land"and" frangibility ", through systematical analysis the environmental effects of the main land ecological environment factors of Baoshan,constructing land ecological environment frangibility evaluation system of Baoshan, evaluates frangibility of land ecological environmental, combined with eco-environmental effects of land use of the study, puts forward the countermeasures and measures for the sustainable use and protection of Baoshan land ecological environment. The content and results of thesis are the following:1、Ead the concept and evaluation method of vulnerability into the study of land ecological environment,with GIS technology to explore a methodology for evaluating frangibility of land ecological environment,which suitable for large area with complex natural and social environmental conditions and land use diversity.2、Analysis the the status and change of the main land ecological environment factors (such as:terrain, climate, soil distribution, land use, forest vegetation, soil erosion, geological disasters, etc.),study the eco-environmental effect of each elements.3、Take-level analysis,12 factors(e.g. forest vegetation, soil distribution, soil erosion, geological disasters, land use types, slope, aspect, average annual rainfall, average temperature, population density, per capita arable land,>10℃accumulated temperature) selected as the evaluation index, and carry on the classification and grading, determine the weight of factors. On basis of GIS, used the grid method to divide the study area into 19739 grid units for evaluation, the actual area of each unit is 1.0 km2. Select fuzzy comprehensive evaluation method to calculate the total score, the land ecological environment in Baoshan City vulnerability assessment is dividedinto 29 sub-districts, five sub-areas of lower vulnerability, six sub-areas of lowvulnerability,seven sub-areas of middle vulnerability,seven sub-areas of highvulnerability,four sub-areas of higher vulnerability.4、Combined with the resul of Baoshan land ecological environment vulnerability evaluationt, carries on the land ecological environment sustainable utilization and protection districts, the entire study area is divided into nine protected and comprehensive developed areas, and the basic land ecological environment protection countermeasures and suggestions are put forward.

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > Biological assessment, ecological assessment
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