朱国梁, 江波, 刘雨菲. 基于Landsat影像的雄安新区2013—2021年土地利用变化检测和生态政策评估[J]. 北京师范大学学报(自然科学版). DOI: 10.12202/j.0476-0301.2022338
引用本文: 朱国梁, 江波, 刘雨菲. 基于Landsat影像的雄安新区2013—2021年土地利用变化检测和生态政策评估[J]. 北京师范大学学报(自然科学版). DOI: 10.12202/j.0476-0301.2022338
ZHU Guoliang, JIANG Bo, LIU Yufei. Land use land cover change detection and ecological quality evaluation of Xiong’an New Area from 2013 to 2021 using Landsat images[J]. Journal of Beijing Normal University(Natural Science). DOI: 10.12202/j.0476-0301.2022338
Citation: ZHU Guoliang, JIANG Bo, LIU Yufei. Land use land cover change detection and ecological quality evaluation of Xiong’an New Area from 2013 to 2021 using Landsat images[J]. Journal of Beijing Normal University(Natural Science). DOI: 10.12202/j.0476-0301.2022338

基于Landsat影像的雄安新区2013—2021年土地利用变化检测和生态政策评估

Land use land cover change detection and ecological quality evaluation of Xiong’an New Area from 2013 to 2021 using Landsat images

  • 摘要: 利用2013—2021年共9期Landsat8影像,采用面向对象的监督分类方法,得到新区逐年土地利用与覆盖分类结果,进行LUCC分析及生态质量评价.结论:1)分类结果总体精度大于86.8%,K为 0.81~0.88,优于同期FROM-GLC及GLC_FCS全球分类产品;2)雄安新区设立至今耕地面积减少,不透水面和林地面积增长,蓝绿空间面积占比由12%增加至30%,雄安三县(雄县、容城县和安新县)建设严格遵循了新区《规划纲要》中植树造林、城市发展、湿地涵养3项不同的建设任务,各县主要土地利用覆盖变化分别为耕地向林地的转变、耕地与不透水面的相互转变以及耕地向水体和水生植被的转变;3)不透水面扩张与城市建设对生态质量的负面影响正逐步被森林覆盖率、蓝绿空间面积增加带来的正面影响所抵消.总体看,雄安新区土地利用/覆盖变化遵循新区规划要求,体现了经济社会发展和生态建设的成果.

     

    Abstract: In order to better explore the land use and land cover change (LUCC)in Xiong’an New Area and evaluate the ecological quality impacted by construction, 9 Landsat 8 images from 2013 to 2021 in this area were classified with the object-oriented supervision classification method. Based on all results, the following main conclusions were drawn: (1) The overall accuracy of the new classification results was greater than 86.8% and the kappa coefficients ranged from 0.81 to 0.88, which were superior to that from the FROM-GLC and GLC_FCS global land cover product. (2) Since 2017 when Xiong’an New Area was established, the area of cropland has decreased and the area of impervious area and forest have increased, while the area proportion of the blue-green space has increased from 12% to 30%. Besides, the different LUCC patterns were also observed in three counties within Xiong’an New Area, which met the planning requirements very well. (3) Although the expansion of impervious area and urban construction have the inevitable negative impacts on ecological quality, the positive impacts owing to the increase of forest coverage and the blue-green space have increased gradually and would take the lead in the near future. In conclusion, the LUCC in Xiong’an New Area complies with the construction policy and reflects the achievements of economic and social development in this area.

     

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