信阳师范学院学报（自然科学版）2025，Vol.38Issue(1)：117-124,8.DOI:10.3969/j.issn.2097-583X.2025.01.016
喀斯特山地城市近20年建设用地扩张的时空特征分析
Analysis of spatiotemporal characteristics of construction land expansion in Karst mountainous city over the past 20 years
摘要
Abstract
In response to the spatiotemporal changes in the construction land of typical mountainous cities in southwestern Karst areas during the urbanization process,Guiyang was taken as the research area,and the land use interpreted from remote sensing images of the research area in 2000,2010 and 2020 was used as the data source. Comprehensive analysis methods such as expansion speed,expansion intensity index,sector analysis and landscape expansion index were used to analyze the expansion characteristics of construction land in the research area in the past 20 years from the aspects of spatiotemporal,morphology,and pattern. The research results showed that:(1) Guiyang's construction land expansion speed was fast,and the expansion area of construction land was large. The total expansion area from 2000 to 2020 was 285.66 km2,of which,the expansion area from 2000 to 2010 was 58.54 km2,and the expansion area from 2010 to 2020 was 227.12 km2. The areas with strong expansion intensity were mainly distributed in Nanming District and Huaxi District of Guiyang,with the expansion intensity reaching 3.13％ and 0.31％. From 2000 to 2020,the expansion direction of Guiyang was mainly concentrated in the three directions of S,SSW and SW,of which the maximum area was concentrated in the direction of SW,covering 71.66 km2,93.78 km2 and 167.56 km2 respectively. (2) The overall compactness of construction land in Guiyang was relatively low,and the landscape distribution of construction land was relatively scattered,with fractal dimensions above 1.5,indicating that the contour of urban construction land in Guiyang was relatively broken and irregular. (3) From 2010 to 2020,the expansion mode of construction land in Guiyang had mainly been marginal expansion and enclave expansion,the area of marginal expansion and enclave expansion had in-creased rapidly.关键词
喀斯特山地城市/城市扩张/建设用地/时空特征/多时相遥感Key words
Karst mountain cities/urban expansion/construction land/temporal and spatial characteristics/multi temporal remote sensing分类
经济学引用本文复制引用
任金铜,董艳琴,王志红,卢涵宇..喀斯特山地城市近20年建设用地扩张的时空特征分析[J].信阳师范学院学报（自然科学版）,2025,38(1):117-124,8.基金项目
国家自然科学基金项目(42361074) （42361074）
贵州省高层次创新型人才(毕科人才合[2024]7号) （毕科人才合[2024]7号）
教育部产学合作协同育人项目(220802313202357) （220802313202357）
喀斯特高原资源与环境遥感人才团队项目(毕委人领通[2023]14号) （毕委人领通[2023]14号）
智慧地理空间信息应用工程中心项目(毕科联合[2023]8号) （毕科联合[2023]8号）
贵州省区域内一流建设培育学科"生态学"(黔教XKTJ[2020]22号) （黔教XKTJ[2020]22号）
贵州工程应用技术学院学科建设项目 （）
