• 论文 •

### Urban Expansion and Its Influencing Factors in Natural Wetland Distribution Area in Fuzhou City, China

CAI Yuanbin1, 2, ZHANG Hao1, PAN Wenbin3, CHEN Yanhong4, WANG Xiangrong1

1. (1. Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; 2. Fuzhou Research Academy of Environmental Sciences, Fuzhou 350011, China; 3. College of Environment and Resources, Fuzhou University,Fuzhou 350002, China; 4. Zhichen College, Fuzhou University, Fuzhou 350002, China)
• 出版日期:2012-10-05 发布日期:2012-10-09

### Urban Expansion and Its Influencing Factors in Natural Wetland Distribution Area in Fuzhou City, China

CAI Yuanbin1, 2, ZHANG Hao1, PAN Wenbin3, CHEN Yanhong4, WANG Xiangrong1

1. (1. Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; 2. Fuzhou Research Academy of Environmental Sciences, Fuzhou 350011, China; 3. College of Environment and Resources, Fuzhou University,Fuzhou 350002, China; 4. Zhichen College, Fuzhou University, Fuzhou 350002, China)
• Online:2012-10-05 Published:2012-10-09

This paper principally focuses on land use dynamics, urban expansion and underlying driving forces in the Natural Wetland

Distribution Area (NWDA) of Fuzhou City in the southeastern China. Based on time series Landsat TM/ETM+ imageries and historical data,

relationships between urban land expansion and its influencing factors from 1989 to 2009 were analyzed by using an integrated approach

of remote sensing (RS) and geographic information system (GIS) techniques. The results showed that built-up land increased from 151.16

km2 in 1989 to 383.76 km2 in 2009. Approximately 64.25% of the newly emerging built-up land was converted from cropland (29.47%),

forest and shrub (25.78%), water (3.73%), wetland (4.61%), and bare land (0.66%) during 1989 and 2009. With a remarkable decrease

in cropland, the proportion of non-agricultural population increased by 23.6%. Moreover, rapid development of infrastructures, facilities,

industrial parks, and urban and rural settlements along the Minjiang River resulted in the eastward and southward expansion of built-up

land. Additionally, the growth pattern of built-up land in the NWDA is highly correlated with socio-economic factors, including the gross

domestic product (GDP), GDP per capita, and structure of industry. As a result, the observed environmental degradation such as loss of

cropland and wetland due to heavy pressure of rapid urbanization have greatly impaired the carrying capacity of city. Thus, in addition to

scientific and rational policies towards minimizing the adverse effects of urbanization, coordination between the administrative agencies

should be urgently strengthened to balance the conflicts between urban development and ecological conservation to make sure the

sustainable land use.

Abstract:

This paper principally focuses on land use dynamics, urban expansion and underlying driving forces in the Natural Wetland

Distribution Area (NWDA) of Fuzhou City in the southeastern China. Based on time series Landsat TM/ETM+ imageries and historical data,

relationships between urban land expansion and its influencing factors from 1989 to 2009 were analyzed by using an integrated approach

of remote sensing (RS) and geographic information system (GIS) techniques. The results showed that built-up land increased from 151.16

km2 in 1989 to 383.76 km2 in 2009. Approximately 64.25% of the newly emerging built-up land was converted from cropland (29.47%),

forest and shrub (25.78%), water (3.73%), wetland (4.61%), and bare land (0.66%) during 1989 and 2009. With a remarkable decrease

in cropland, the proportion of non-agricultural population increased by 23.6%. Moreover, rapid development of infrastructures, facilities,

industrial parks, and urban and rural settlements along the Minjiang River resulted in the eastward and southward expansion of built-up

land. Additionally, the growth pattern of built-up land in the NWDA is highly correlated with socio-economic factors, including the gross

domestic product (GDP), GDP per capita, and structure of industry. As a result, the observed environmental degradation such as loss of

cropland and wetland due to heavy pressure of rapid urbanization have greatly impaired the carrying capacity of city. Thus, in addition to

scientific and rational policies towards minimizing the adverse effects of urbanization, coordination between the administrative agencies

should be urgently strengthened to balance the conflicts between urban development and ecological conservation to make sure the

sustainable land use.