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题名: 城市化过程中北京市人口时空演变对生态系统质量的影响
作者: 王坤; 周伟奇; 李伟峰
刊名: 应用生态学报
出版日期: 2016
卷号: 27, 期号:7, 页码:2137-2144
关键词: 城市化 ; 城市周边区域 ; 人口时空格局 ; 生态系统质量 ; 北京
其他题名: Impacts of population spatio-temporal dynamics on ecosystem quality during fast urbanization in Beijing,China
中文摘要: 应用第五、第六次人口普查和MODIS-NDVI 遥感数据,从城市、区/县和街道/乡镇3个尺度,分析了20002010年北京市人口时空演变特征及其对区域生态系统质量的影响.结果表明: 研究期间,北京市总人口增长了43.9%,人口空间分布形成了明显的圈层特征,呈现向近郊转移聚集的趋势; 北京市的年最大归一化植被指数(NDVI)呈增加趋势,在5~6环之间却显著降低.城区和远郊区的NDVI 变化趋势与人口密度变化率呈显著负相关.城市化带来的人口数量增加不仅没有导致北京整体生态系统质量下降,反而通过城市功能调整和农民进城务工人口转移等方式,提高了城区和远郊区的生态系统质量.不同的功能定位和发展机制是影响北京市人口时空格局变化及其生态影响的主要原因.
部门归属: 城市与区域生态国家重点实验室
英文摘要: The spatio-temporal dynamics of population and its impact on the regional ecosystem quality in Beijing were analyzed at city-county-township hierarchical levels during 2000 to 2010, based on the 5~(th) and 6~(th) population census data and MODIS-NDVI thematic data. We found that the resident population of Beijing increased by 43.9% during the study period,and the trend of population gathering to the urban fringe resulted in an obviously circular distribution. The annual maximum NDVI of Beijing had the trend of increase,however,decreased significantly between the 5th Ring and the 6th Ring. The change trends of NDVI in urban and exurban areas showed significantly negative relationships with the change ratios of population density,respectively. The increment of urban population caused by urbanization did not show negative influence on the regional ecosystem quality of Beijing. On the contrary,the ecosystem quality in urban core and exurban areas was improved, due to the adjustment of city functions and the population transfer from rural to urban area. Therefore, the functional orientation and development mechanism were the main contribution to the evolution of population pattern and its ecological impacts.
内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36463
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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