| 长沙市景观破碎化时空分异特征研究 |
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| 引用本文： | 洪鸿加,彭晓春,陈志良,张杏杏,刘强.长沙市景观破碎化时空分异特征研究[J].国土资源遥感,2011,22(1):133-137. |
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| 作者姓名： | 洪鸿加 彭晓春 陈志良 张杏杏 刘强 |
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| 作者单位： | 1. 环境保护部华南环境科学研究所,广州,510655;湖南农业大学,长沙,410128
2. 环境保护部华南环境科学研究所,广州,510655 |
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| 基金项目： | “十一五”国家科技支撑计划重点项目（编号： 2007BAC16B08）。 |
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| 摘 要： | 基于2000年长沙市1:10万土地利用图,利用ERDAS软件对1989年、2006年的遥感图像进行解译;在地理信息系统软件ArcGIS和景观格局分析软件Fragstats支持下,以城镇建设空间重心为中心,分别选取东西、南北景观样带(40 km×8 km)和8个不同半径的同心圆缓冲区,用斑块密度、边界密度、平均斑块分维数...
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| 关 键 词： | 景观破碎化 移动窗口 梯度分析 空间重心 长沙市 |
| 收稿时间： | 2010-06-15 |
| 修稿时间： | 2011-01-04 |
The Investigation of Spatiotemporal Patterns of Landscape Fragmentation during Rapid Urbanization in Changsha City |
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| HONG Hong-jia,PENG Xiao-chun,CHEN Zhi-liang,ZHANG Xing-xing,Liu Qiang.The Investigation of Spatiotemporal Patterns of Landscape Fragmentation during Rapid Urbanization in Changsha City[J].Remote Sensing for Land & Resources,2011,22(1):133-137. |
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| Authors: | HONG Hong-jia PENG Xiao-chun CHEN Zhi-liang ZHANG Xing-xing Liu Qiang |
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| Institution: | (1.South China Institute of Environmental Sciences, Ministry of Environmental Protection of China, Guangzhou 510655, China; 2.Hunan Agricultural University, Changsha 410128, China) |
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| Abstract: | Based on Remote Sensing and GIS, this paper quantified the landscape fragmentation of Changsha city by using landscape pattern metrics such as patch density, edge density, mean patch fractal dimension, landscape contagion index and Shannon diversity index. To reflect the spatial change in landscape fragmentation from the extent of human influence on the environment, the authors selected two transects in the orientation from north to south (N-S,40 km×8 km) and from west to east (W-E, 40 km×8 km) through Changsha’s spatial gravity center. Eight concentric areas with different radii from Changsha’s spatial gravity center were also selected to analyze the temporal change in landscape fragmentation. The results show that the spatial gravity center has moved 2.45 km in east-southeast direction for about 75°. The outward expansion of the construction land in the form of concentric zone model has a great impact on the landscape pattern of the suburbs. The study of urban-to-rural transects has also showed that the agglomeration effects in urban areas are obvious. In contrast to the city center, fragmentation of landscape has been increasing and spatial heterogeneity has been changing dramatically in suburban areas. |
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| Keywords: | Landscape fragmentation Moving window Gradient analysis Spatial gravity center Changsha city |
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