基于GIS的北京市城乡景观格局梯度时空变化研究

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Abstract

From the gradient spatiotemporal landscape pattern analysis using the landscape metrics based on the 1990 and 2000 land use data of Beijing metropolitan region,we achieved the affirmative and informative conclusions on the characteristics of Beijing's landscape structure change pattern and the land use spatiotemporal change pattern in the ten years.Forest and cultivated land were the most two dominant landscape types,but the urban land expanded largely from 1990 to 2000 and the total area of urban land was almost the same as rural settlement which indicated that the urbanization level of Beijing had reached to a high level.The urban land proportion decreased as the distance from the city center increased and urban areas expanded to the suburban areas in the ten years.The urbanization degree was higher to the north direction than to the south.The cultivated land area decreased in all blocks in the transects and the edge areas of the city were the most dynamic area and they were more separated and fragmented.Combining landscape metrics with gradient analysis from a temporal angle is a robust and efficient method to study the landscape pattern change in the process of urbanization.

Key words： gradient analysis landscape metrics spatiotemporal changes GIS urbanization Beijing

Received: 25 August 2008

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	QUAN Quan
	TIAN Guang-jin

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QUAN Quan,TIAN Guang-jin. A gradient analysis of spatiotemporal changes of urban landscape pattern in Beijing metropolitan region by GIS[J]. , 2008, 27(4): 254-261.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2008/V27/I4/254

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