| 京津冀城市群城市扩张格局演变及其对生态环境质量的影响 |
| 摘要点击 721 全文点击 81 投稿时间：2024-09-03 修订日期：2024-10-31 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 城市用地扩张 综合遥感生态环境指数（IRSEI） 生态环境 时空地理加权回归模型（GTWR） 京津冀（BTH）城市群 |
| 英文关键词 urban land expansion integrated remote sensing eco-environment index（IRSEI） ecological environment geographically and temporally weighted regression model（GTWR） Beijing-Tianjin-Hebei （BTH） urban agglomeration |
| 作者 | 单位 | E-mail | | 陈辅国 | 河北地质大学土地科学与空间规划学院, 河北省农业干旱遥感监测国际联合研究中心, 石家庄 050031
河北省科学院地理科学研究所, 河北省地理信息开发应用工程技术研究中心, 石家庄 050011 | chenfg3505@163.com | | 郭爱请 | 河北地质大学土地科学与空间规划学院, 河北省农业干旱遥感监测国际联合研究中心, 石家庄 050031 | 344034859@qq.com | | 武爱彬 | 河北省科学院地理科学研究所, 河北省地理信息开发应用工程技术研究中心, 石家庄 050011 | wu.ai.bin@163.com | | 王宇桐 | 中国农业大学土地科学与技术学院, 北京 100083 | | | 范洁 | 河北省自然资源利用规划院, 石家庄 050051 | |
|
| 中文摘要 |
| 明晰京津冀城市群城市用地扩张对生态环境质量变化的影响，对京津冀城市群区域高质量发展及生态文明建设具有重要意义. 引入城市扩张速率、城市扩张强度以及景观格局指数等分析京津冀城市群2000~2020年城市用地扩张，基于GEE平台构建综合遥感生态环境质量指数（IRSEI）评估区域生态环境变化状况，并利用时空地理加权回归模型探究城市用地扩张对生态环境质量变化的影响. 结果表明：①2000~2020年期间，京津冀城市群城市用地总体扩张速度为217.22 km2·a-1，2000~2010年扩张速度快于2010~2020年的扩张速度. 其中，西北部山区的城市扩张速度较低，东南平原的城市扩张速度较高. 研究期间京津冀城市群整体扩张强度为6.14%，其中处于高速扩张、快速扩张和中速扩张的区域主要集中在东南部平原地区；处于低速扩张和慢速扩张的区域主要位于西北部. 研究期间京津冀城市群数量、斑块密度和景观形状指数呈现上升的趋势，最大斑块指数呈现下降的趋势，城市用地破碎度不断升高. ②2000~2020年期间，京津冀城市群IRSEI整体呈现出上升趋势，2020年相较于研究初期，IRSEI上升幅度为6.13%，北部燕山山区和西部太行山山区的生态环境质量较高，而坝上高原区和东南平原区的生态环境质量较差. 研究期间生态环境质量下降的区域主要包括环渤海区域和东南平原区尤其是城市中心区及其周边，生态环境质量上升的区域主要为西部太行山区和北部燕山山区. ③城市扩张对生态环境质量变化的影响程度具有明显的空间分异，景观形状指数在绝大部分县区的回归系数为负，是影响生态环境质量变化的主要原因. 城市扩张对区域的生态环境质量变化主要为负面影响，应制定合理的发展政策，以促进城市发展与生态环境保护相协调. |
| 英文摘要 |
| Clarifying the impacts of urban land expansion on changes in the quality of the ecological environment in the Beijing-Tianjin-Hebei （BTH） urban agglomeration is of great significance for the high-quality development of the BTH urban agglomeration and the construction of ecological civilization. The urban expansion rate， urban expansion intensity， and landscape pattern index were introduced to analyze the urban expansion pattern of the BTH urban agglomeration from 2000 to 2020， the integrated remote sensing eco-environment index （IRSEI） was constructed based on the Google Earth Engine （GEE） platform to evaluate the regional eco-environmental change status， and the impact of the evolution of urban expansion pattern on the change of eco-environmental quality was investigated using a geographically and temporally weighted regression model （GTWR）. The study produced several interesting results： ① The overall expansion rate of urban land in the BTH urban agglomeration from 2000 to 2020 was 217.22 km2·a-1， and the expansion rate from 2000 to 2010 was faster than the rate from 2010 to 2020. Among regions， the urban expansion rate was slower in the northwestern mountains and higher in the southeastern plains. The overall expansion intensity of the BTH urban agglomeration during the study period was 6.14%. Areas with high-speed expansion， rapid expansion， and medium-speed expansion were mainly concentrated in the southeastern plains， and areas with low-speed expansion and slow expansion were mainly located in the northwestern part of the study area. During the study period， the number of urban agglomerations in BTH， the density of patches， and the landscape shape index showed increasing trends， the maximum patch index showed a decreasing trend， and the fragmentation of urban land was increasing. ② During the period from 2000 to 2020， the IRSEI of the BTH urban agglomeration as a whole showed an upward trend. In 2020， the IRSEI had increased by 6.13% compared with the early stage of the study， and the ecological environment quality of the Yanshan Mountain area in the north and the Taihang Mountain area in the west was higher， while that of the Bashang Plateau area and the southeastern plains area was poorer. During the study period， the ecological environment quality decreased mainly in the peripheral area along the Bohai Sea and the Southeast Plain area， especially in and around the urban centers， while the ecological environment quality increased mainly in the western Taihang Mountain area and the northern Yanshan Mountain area. ③ The degree of influence of urban expansion on the changes of ecological environment quality revealed obvious spatial differentiation， and the regression coefficient of landscape shape index was negative in most counties and regions， which is the main reason for the changes of ecological environment quality. Urban expansion has mainly negative impacts on the ecological environment quality in the region， and reasonable development policies should be formulated to harmonize urban development with ecological environment protection. |
