[1]HOU Lan-gong,QIAO Biao.Study on Urban Expansion and Its Ecological Effect in Beijing City[J].Research of Soil and Water Conservation,2012,19(06):193-196.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 06
Page number:
193-196
Column:
Public date:
2012-12-20
- Title:
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Study on Urban Expansion and Its Ecological Effect in Beijing City
- Author(s):
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HOU Lan-gong1, QIAO Biao2
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1. College of Geographic Information and Tourism, Chuzhou Universtiy, Chuzhou, Anhui 239000, China;
2. Electronic Information Industry Development Research Institute of China, Beijing 100048, China
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- Keywords:
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urban expansion; land use change; ecosystem service value; Beijing City
- CLC:
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TU984;K901
- DOI:
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- Abstract:
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With the fast development of urban economy and urban expansion, a large number of people concentrated in the central city and changes in a large-scale land use and land cover had taken place in Beijing in the past several years. In order to study characteristics of urban expansion and its ecological environment effect in Beijing, an integrated approach of remote sensing (RS) data (1990, 2000 and 2007), GIS spatial analysis and ecosystem service value assessment method was developed to examine the tempo-spatial patterns and the rationality of urban expansion and to explore their ecological effect in recent 17 years. The findings indicated that there was a remarkable expansion in urban land cover since 1990s. The most evident spatial characteristic is to sprawl from central city to the outer along main traffic lines and several hot spots. Due to urban expansion, cropland area of 1 719.25 km2 was reduced, forest area of 220.25 km2 was reduced, and ecosystem service value of 2.18 billion Yuan was lost. Because of urban land expansion, a large area of cropland and natural land around the cities were occupied by buildings, roads and other impervious surfaces. As a result, the green shelter function and ecological effect of the city became weaker and weaker day by day.