| 基于人类足迹的成渝地区双城经济圈生态质量评价 |
| 摘要点击 2778 全文点击 665 投稿时间：2024-07-08 修订日期：2024-10-06 |
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| 中文关键词 生态质量 成渝地区双城经济圈 人类足迹 标准差椭圆 地理探测器 |
| 英文关键词 ecological quality Chengdu-Chongqing Economic Circle human footprint standard deviation ellipse geo-detector |
| DOI 10.13227/j.hjkx.202407079 |
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| 中文摘要 |
| 成渝地区双城经济圈作为我国西部的经济重心,其快速城市化和经济发展需要与生态环境保护相协调. 利用遥感技术和多源数据,借助GEE平台,通过构建包括绿度、湿度、干燥度、热度和人类足迹指数在内的综合遥感指数（HRSEI）,对成渝地区双城经济圈在2013~2022年的生态环境质量进行评估. 结果表明：①2013~2022年间,成渝地区的人类活动强度显著增加,并对生态质量产生了显著影响,空间分布呈现以成都、重庆为核心,沿交通干线辐射. ②成渝地区的生态环境质量显著变化,其中,生态质量等级从良好转为一般的区域占比最大,为22.8%；从优秀转为良好的区域占比为7.3%；从一般转为较差的区域占比为3.6%. ③标准差椭圆结果表明,生态质量较差的区域沿成渝双核城市发展方向分布,而生态质量较好的区域呈相反趋势. ④地理探测器模型结果表明,高程、温度与人类活动对研究区生态环境的稳定性具有重要影响. |
| 英文摘要 |
| As an important economic center in western China, the rapid urbanization and economic development of the Chengdu-Chongqing economic circle needs to be coordinated with ecological environmental protection. In this study, we utilized remote sensing technology and multi-source data, leveraging the Google earth engine platform to construct the human remote sensing ecological index （HRSEI）, which included indicators of greenness, wetness, dryness, heat, and the human footprint. This index was used to assess the ecological quality of the Chengdu-Chongqing economic circle from 2013 to 2022. The results showed that during this period, the intensity of human activities in the region increased significantly, exerting a profound impact on ecological quality. The spatial distribution of ecological changes exhibited a core-periphery pattern, centered on Chengdu and Chongqing, radiating along major transportation corridors. Ecological quality demonstrated complex trends amidst rapid urbanization and economic growth. Among them, the largest area of ecological degradation involved transitions from “good” to “fair,” accounting for 22.8%, followed by a change from “excellent” to “good” （7.3%） and a change from “fair” to “poor” （3.6%）. The deterioration of “poor” and “very poor” ecological quality was mainly concentrated around the core city and its transportation network, while “good” and “excellent” areas had improved their ecological quality. The ecological improvement and restoration of the “good” and “excellent” areas were closely linked to the implementation of regional environmental protection policies. Geo-detector analysis further revealed that the interactions between natural factors （such as elevation and temperature） and human activities （such as land use） had an important influence on the dynamic changes of ecological quality in the Chengdu-Chongqing economic circle. This study provides a scientific basis for future coordinated regional development and ecological environmental protection. |
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