| 海口市热力景观时空格局与分异特征 |
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| 引用本文： | 李玉杰,卢娟,陈思佳,付晖.海口市热力景观时空格局与分异特征[J].浙江农林大学学报,2021,38(4):712-722. |
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| 作者姓名： | 李玉杰 卢娟 陈思佳 付晖 |
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| 作者单位： | 1.湖南科技学院 土木与环境工程学院，湖南 永州 4251992.海南大学 林学院，海南 海口 570228 |
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| 基金项目： | 海南省自然科学基金资助项目(318QN194)；海南省哲学社会科学规划项目〔HNSK(QN)18-06〕 |
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| 摘 要： | 目的 了解海口市热力景观的时空演变特征，缓解快速城市化引起的城市热环境问题。 方法 以2000、2005、2010、2015和2019年共5期Landsat遥感影像为数据源，采用单窗算法反演地表温度研究热环境时空演变；基于地理信息系统(GIS)平台，结合地统计学和景观格局指数法定量分析城市热岛时空分异特征。 结果 热岛强度等级面积曲线符合正态分布特征，其中较弱冷岛、弱冷岛和弱热岛斑块始终占主导格局；热岛等级中心集中区由西海岸分别向江东新区和西南老城方向扩散转移。温度剖面分析可知:中心城区始终是“高原”区，工业区、美兰机场区域多“高峰”值，大面积水域、林地处通常出现“谷”值。2000?2010年高温区扩张快，热岛斑块不断缩小，大型斑块逐渐分解，斑块形状愈加复杂，热岛效应不断增强；2010?2019年扩张慢，热岛斑块不断扩张，小版块逐渐连接成片，斑块形状变化趋于平稳，热岛效应不断减弱。研究期间，同类别热力斑块连通性始终较高。 结论 海口热力景观演变与城市不同发展阶段相对应，基于等级理论的热力景观格局指数分析，有助理解热力景观的时空演变趋势，为生态可持续城市发展规划提供理论依据。图7表3参20
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| 关 键 词： | 城市热岛 温度剖面 热场变异指数 热力景观格局指数 海口 |
| 收稿时间： | 2020-10-15 |
On the spatial-temporal patterns and differentiation characteristics of thermal landscape in Haikou City |
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| LI Yujie,LU Juan,CHEN Sijia,FU Hui.On the spatial-temporal patterns and differentiation characteristics of thermal landscape in Haikou City[J].Journal of Zhejiang A&F University,2021,38(4):712-722. |
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| Authors: | LI Yujie LU Juan CHEN Sijia FU Hui |
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| Affiliation: | 1.School of Civil and Environmental Engineering, Hunan University of Science and Technology, Yongzhou 425199, Hunan, China2.Forestry College, Hainan University, Haikou 570228, Hainan, China |
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| Abstract: | Objective With an analysis of the temporal and spatial evoluation characteristics of the thermal landscape in Haikou City, this study is aimed at solutions to the urban thermal environment problems that attribute to the rapid urbanization. Method With the five-phase Landsat remote sensing images of 2000, 2005, 2010, 2015 and 2019 gathered as the data source, a single-window algorithm was utilized to invert the surface temperature to study the temporal and spatial evolution of the thermal environment. Employing GIS platform and the method of geostatistics and landscape pattern index, we have conducted a quantitative analysis of the spatial and temporal differentiation characteristics of urban heat island. Result The area curve of the heat island intensity conforms to the normal distribution characteristics, and the patches of weaker cold island, weak cold island and weaker heat island persist in their dominant patterns. The heat island intensity reduces from the central concentration area to Jiangdong New District near the west coast and the old urban area in the southwest. In the temperature profile, the principal urban area is always a “plateau” area, with the industrial area and the Meilan Airport area often displaying “peak” values, and the large area of waters and forest land showing “valley” values. During the peried from 2000 to 2010, with the rapid expansion of the high temperature, the heat island plaques continued to shrink, while the large plaques gradually decomposed, making the shape of the plaques continuously cnhanced. During the peride from 2010 to 2019, with the expansion slowing down, the heat island plaques continued to expand, and the small plates gradually fitting together, making the change of patch shape stable, and the heat island effect continuously weakened. Throughout the study, the connectivity of thermal plaques of the same category was consistently high. Conclusion The evolution of Haikou’s thermal landscape is consistent with the different stages of urban development and the analysis of thermal landscape pattern index based on hierarchy theory is conductive understanding the temporal and spatial evolution of thermal landscape, provideing a theoretical basis for ecologically sustainable urban development planning. Ch, 7 fig. 3 tab. 20 ref.] |
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