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Urban land use / cover change and ecological security association studies

Author: YuanJing
Tutor: YuGuangMing
School: Central China Normal University
Course: Cartography and Geographic Information Systems
Keywords: City LUCC Ecological safety PSR framework AHP decision making Correlation analysis
CLC: F301
Type: Master's thesis
Year: 2011
Downloads: 145
Quote: 0
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Abstract


The city is the main area of ??human habitation, but also the center of human activity. In the city's development process, the city's land use has undergone significant changes, it brings land cover change on urban ecology micro and macro aspects having an impact. This article discusses the urban land use / cover change and the relationship between the urban ecological security, view from the perspective of urban land development and utilization, research how to adjust the urban land use impact on urban ecological security, making it a positive development. This paper analyzes the characteristics of urban land use, urban land use expounded on the impact of urban ecological security, and the establishment of urban land use impact on ecological security mechanism. On the basis of relevant theories, this paper selected as the study area of ??Wuhan City, the use of remote sensing and image interpretation results in Hubei Province from 1996 to 2005 detailed survey data of land use, land use change using a dynamic model of land use change in Wuhan characteristics. On the other hand, in the PSR framework, this paper establishes the Wuhan City Ecological Security Evaluation index system of decision-making method using AHP weights given to each indicator, and through comprehensive index calculated each year in Wuhan ecological safety values. In the above two parts based on the research, this article Wuhan City, land use change and ecological security index values ??of the correlation analysis, discusses the Wuhan City land use / cover change and ecological security relationship. This paper's findings and conclusions are: (1) Wuhan Landuse change in the number presented on arable land decreased slowly, residential and industrial land area is characterized by the gradual increase in the extent of land use change on the existence of differences in the District of Wuhan City and their respective districts and urban development are closely linked. (2) Changes in Wuhan ecological security mainly through the study period in the police, early warning and safer three states. Judging from the overall trend, the Wuhan City has obviously improved ecological safety signs, which in 2005 the value of the ecological security of Wuhan City is reached 0.714, close to the safe state. (3) the degree of land use in Wuhan and ecological security index values ??there was a significant correlation between the correlation coefficient of 0.905, was in the same direction correlation, and in the confidence level of 0.001 on the associated probability reached 99.9%, but the Wuhan City Comprehensive Land Use and Ecological Security in value is not relevant. (4) The results of this study indicate that the factors involved in urban ecological security aspects of the system from the city, through the analysis of the correlation between the index for urban land use / cover change impacts on ecological security proved to be inadequate, and can not be removed Other factors on the impact of urban ecological security.

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CLC: > Economic > Agricultural economy > Agricultural economic theory > Land Economics
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