| 引用本文: | ZHANG Qiang, LU Hai-feng, ZHAO Wen-hui, ZHANG Li-kun, LI Ling-jun.Remote Sensing Monitoring and Analysis of Urban Wetland in Beijing from 2016 to 2018[J].Environmental Monitoring and Forewarning,2019,11(5):91~95 |
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| 摘要: |
| 为全面了解北京城市湿地的现状及近年来的动态变化情况，利用高分辨率卫星遥感数据，综合运用GIS技术与景观生态学方法，定量分析了北京市6环内的湿地空间格局。结果表明，北京6环内城市湿地以河流湿地和湖库湿地为主；2016—2018年间湿地面积有所下降，2年间减少了126.58 hm2，主要转化为草地，少量转化为建设用地和林地；由于城市外围的开发建设强度较大，5-6环湿地被侵占面积相对较大，而4环内湿地面积的波动较小；2016—2018年，北京城市湿地的斑块密度增加，平均斑块面积有所减小，表明湿地斑块随时间变化呈破碎化的趋势，且从城市中心向城市边缘，湿地斑块的破碎化程度增强。 |
| 关键词: 湿地 遥感 转移矩阵 景观格局 北京 |
| DOI： |
| 分类号:X87；X835 |
| 文献标识码:B |
| 基金项目:国家重点研发计划基金资助项目（2018YFC0706004） |
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| Remote Sensing Monitoring and Analysis of Urban Wetland in Beijing from 2016 to 2018 |
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ZHANG Qiang, LU Hai-feng, ZHAO Wen-hui, ZHANG Li-kun, LI Ling-jun
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Beijing Municipal Environmental Monitoring Center, Beijing 100048, China
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| Abstract: |
| In order to fully understand the status and dynamics of urban wetland in Beijing, The spatial pattern of urban wetland and its change within the 6th ring road was analyzed using high resolution remotely sensed data and GIS technology. It is shown the river wetlands and reservoir wetlands were the main wetland types within the 6th ring road of Beijing. The urban wetlands decreased by 126.58 hm2 from year 2016 to 2018, which were mainly converted into grassland and a small amount into construction land and woodland. Due to the high intensity development and construction in the urban fringe, the phenomenon of wetland being encroached was relatively obvious between the 5th to the 6th ring road, while the wetland area change slightly within the 4th ring road. From 2016 to 2018, the wetland patches in Beijing became larger in number and smaller in mean patch size, indicated that wetland patches became more fragmented. In addition, the decreased mean patch size and increased patch density and landscape shape index from the 2nd to the 6th ring road suggested that the wetland patches in urban fringe were more fragmented and had more complex shape. |
| Key words: Wetland Remote sensing Transfer matrix Landscape pattern Beijing |
