摘要
【目的】探究不同地形梯度下黄山市景观格局的空间演化和特征规律。【方法】使用ArcGIS 10.5、Fragstats 4.2软件,采取地形位指数、分布指数、信息图谱分析和景观指数等方法,对黄山市2000、2010和2020年3个时期的遥感数据和DEM数字高程模型数据进行处理,完成了对研究区景观格局的地形梯度效应分析。【结果】不同景观类型的空间分布有明显的随梯度变化特征,黄山市地形以中低等级梯度为主,受人类活动和自然因素影响,耕地和建设用地在2—3级地形区呈优势分布,林地在5—9级地形区内呈优势分布;稳定型在景观类型变化中占绝对主导分布,其最大变化图谱类型为林地-林地-林地;黄山市境内的优势景观更多分布于低等级和高等级地形区,在低、中低地形区域景观破碎化现象更为显著,景观形状复杂。【结论】黄山市未来规划要注重分类施策,调整不同地形区上土地利用景观的分布,着重徽派文化遗产留存;要预防城市无序扩张,减少耕地流失。
【Objective】It is to investigate the spatial evolution and characteristic patterns of landscape patterns in Huangshan City under different topographic gradients.【Method】Using ArcGIS 10.5 and Fragstats 4.2 software,the topographic position index,distribution index,information mapping analysis and landscape index were adopted to process the remote sensing data and DEM digital elevation model data of Huangshan City for three periods of 2000,2010 and 2020,and to complete the analysis of topographic gradient effect on the landscape pattern of the study area.【Result】The spatial distribution of different landscape types has obvious characteristics of change with gradient.The topography of Huangshan City is dominated by medium and low grade gradient,influenced by human activities and natural factors,arable land and construction land are dominantly distributed in the terrain area of grade 2 to 3,and forest land is dominantly distributed within the terrain area of grade 5 to 9;stable type occupies the absolute dominant distribution in landscape type change,and its maximum change map type is forest land-forest land-forest land.The dominant landscape in Huangshan City is more distributed in low-grade and high-grade terrain areas,and the landscape fragmentation is more significant in low and medium-low terrain areas with complex landscape shapes.【Conclusion】The future planning of Huangshan City should pay a ttention to the classification policy,adjust the distribution of land use landscape on different topographic areas,and focus on the retention of Huizhou cultural heritage;to prevent urban sprawl and reduce the loss of arable land.
作者
王诗琪
周振宏
刘东义
胡琦
汤伟宏
周敏
WANG Shiqi;ZHOU Zhenhong;LIU Dongyi;HU Qi;TANG Weihong;ZHOU Min(School of Forestry and Landscape Architecture,Anhui Agricultural University,Hefei 230036,China)
出处
《湖南生态科学学报》
CAS
2023年第3期10-18,共9页
Journal of Hunan Ecological Science
基金
国家自然科学基金青年科学基金项目(41301650)。
关键词
黄山市
地形梯度
景观格局
土地利用
土地变化图谱
Huangshan City
topographic gradient
landscape pattern
land use
land change mapping
