| 基于土地利用的三维景观格局指数变化分析 |
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| 引用本文： | 刘国栋,陈炜吉.基于土地利用的三维景观格局指数变化分析[J].地理空间信息,2021,19(1):71-73,98. |
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| 作者姓名： | 刘国栋 陈炜吉 |
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| 作者单位： | 重庆交通大学土木工程学院,重庆 400074;重庆交通大学土木工程学院,重庆 400074 |
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| 基金项目： | 重庆市研究生教育优质课程建设资助项目;重庆市科委课题资助项目;山区桥梁与隧道工程国家重点实验室培育基地课题资助项目 |
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| 摘 要： | 由于传统二维景观格局指数未考虑地形特征对景观格局指数的影响,为进一步研究地形结构对景观格局指数的影响,以重庆主城区为研究对象,利用ENVI5.2、ArcGIS10.5、Fragstats4.2平台,对重庆主城区不同城市化阶段的Landsat影像数据进行土地利用变化和三维景观格局分析。结果表明,2008-2018年研究区土地利用面积发生了较大变化,表现为林地和建设用地增加,耕地减少,湖泊与河流面积变化不大;景观格局变化主要表现为景观受人类干扰较强,随着城镇规划越来越合理,景观破碎度减少,景观异质性降低。通过对比二维景观格局指数发现,三维景观格局指数更能反映研究区的景观格局。
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| 关 键 词： | 土地利用变化 二维景观格局指数 三维景观格局指数 GIS 重庆主城区 |
Analysis of 3D Landscape Pattern Index Change Based on Land Use |
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| Abstract: | Due to the traditional 2D landscape pattern index does not consider the impact of topographic characteristics on landscape pattern index,in order to further study the impact of topographic structure on landscape pattern index,taking the main urban area of Chongqing as the research object,we used ENVI5.2,ArcGIS 10.5 and Fragstats 4.2 to study land use change and 3D landscape pattern at different stages of urbanization in the main urban area of Chongqing.The results show that the great changes have taken place in the land use area of the study area from 2008 to 2018,such as the increase of woodland and construction land,the decrease of arable land,and the little change of lake and river area.The landscape pattern changes are mainly manifested in the strong human disturbance to the landscape.Along with more and more rational urban planning,landscape fragmentation and landscape heterogeneity will reduce.By comparing the 2D landscape pattern index,it is found that the 3D landscape pattern index can better reflect the landscape pattern of the study area. |
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| Keywords: | land use change 2D landscape pattern index 3D landscape pattern index GIS the main urban area of Chongqing |
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