桂林市临桂区景观格局演变与驱动力因子分析

doi:10.16088/j.issn.1001-6600.2023122602

摘要/Abstract

摘要： 景观格局演变研究是城市可持续发展研究的重要手段,可以揭露景观发展的动态变化,把控城市发展与生态保护之间的尺度。本文基于景观指数法、二元logistic回归分析方法对桂林市临桂区20年间的景观格局变化及其驱动子因子进行分析,选取自然因子与人为因子共15项驱动力因子,将驱动因子全部赋值为栅格,使用ArcGIS10.7随机取样后进行二元logistic回归分析。结果显示:2000—2020年,临桂区城市化水平稳步提升,2015—2020年城市化进程最快,尽管建设用地占比不大,但其变化速率在所有地类中最大,从2000年的1.94%增加到2020年的3.64%,净增长了0.88倍,这是临桂区城市化快速推进的结果。城市化造成了一定的景观破碎化倾向,但景观整体结构变化幅度较小,总体呈现稳定趋势;临桂区各地类均呈聚集性分布,林地与耕地中存在巨型斑块,林地主要分布在北侧与南侧的山地,耕地、草地、建设用地、水域集中分布在以临桂镇为中心的平原地带,新增建设用地集中在临桂镇范围内;临桂区景观格局变化受自然条件、土地利用总体规划、城市发展政策、农业生产活动、城市化水平提升等因素综合影响。

关键词: 景观格局, 城镇化, 灰色关联度, 景观破碎化, 驱动力因子, 桂林

Abstract: The study of landscape pattern evolution is an important means of urban sustainable development research. It can reveal the dynamic changes of landscape development and control the scale between urban development and ecological protection. In this paper, the landscape pattern change and its driving sub-factors in Lingui District of Guilin City for 20 years were analyzed based on the landscape index method and binary logistic regression analysis method and some suggestions were put forward. The results showed that the urbanization level of Lingui District had been steadily improved from 2000 to 2020, and the urbanization process was the fastest between 2015 and 2020. Although the proportion of construction land was not large, its change rate was the largest among all land types, from 1.94 % in 2000 to 3.64 % in 2020, with a net increase of 0.88 times. This was the result of rapid urbanization in Lingui District. Urbanization had caused a certain tendency of landscape fragmentation, but the overall structure of the landscape had changed little, and the overall trend was stable. The distribution of various types in Lingui District was clustered, and there were giant patches in forest land and cultivated land. Forest land was mainly distributed in the mountains on the north and south sides. Cultivated land, grassland, construction land and water area were concentrated in the plain area centered on Lingui Town. The new construction land was concentrated in Lingui Town. A total of 15 driving factors of natural factors and human factors were selected, and all the driving factors were assigned to grids. Binary logistic regression analysis was carried out after random sampling using ArcGIS10.7. The analysis results showed that the landscape pattern change in Lingui District was affected by natural conditions, overall planning of land use, urban development policies, agricultural production activities, urbanization level improvement and other factors.

Key words: landscape pattern, urbanization, grey relational analysis, landscape fragmentation, driving forces, Guilin, China

中图分类号: TU985

丁若曦, 马姜明. 桂林市临桂区景观格局演变与驱动力因子分析[J]. 广西师范大学学报（自然科学版）, 2024, 42(4): 203-215.

DING Ruoxi, MA Jiangming. Evolution of Landscape Pattern and Analysis of Driving Forces in Lingui District, Guilin, China[J]. Journal of Guangxi Normal University(Natural Science Edition), 2024, 42(4): 203-215.

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