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Urban expansion and its influencing factors in Natural Wetland Distribution Area in Fuzhou City, China

机译:福州市自然湿地分布区的城市扩张及其影响因素

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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.
机译:本文主要研究中国东南部福州市的自然湿地分布区(NWDA)的土地利用动态,城市扩张及其潜在驱动力。基于时间序列Landsat TM / ETM +影像和历史数据,采用遥感(RS)和地理信息系统(GIS)的综合方法,分析了1989年至2009年城市土地扩张及其影响因素之间的关系。结果表明,已建成土地面积从1989年的151.16 km2 增加到2009年的383.76 km2 。大约64.25%的新建成土地由耕地(29.47%),森林和农田转化而来。 1989年和2009年,灌木(25.78%),水(3.73%),湿地(4.61%)和裸地(0.66%)。由于耕地面积显着减少,非农业人口比例增加了23.6%。此外,Min江沿线的基础设施,设施,工业园区以及城乡聚居区的快速发展导致了建设用地的向东和向南扩张。此外,新西北地区已建成土地的增长方式与社会经济因素高度相关,包括国内生产总值,人均国内生产总值和产业结构。结果,由于快速的城市化带来的沉重压力,观测到的环境退化,例如耕地和湿地的流失,极大地损害了城市的承载能力。因此,除了采取科学合理的政策来最大程度地减少城市化的不利影响外,还应紧急加强行政机构之间的协调,以平衡城市发展与生态保护之间的冲突,以确保土地的可持续利用。

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