摘要
基于遥感和GIS分析了吉林市区景观变化和城市扩展的空间形态。景观格局变化分析表明,城镇建设用地、农村居住地、交通用地、旱地和水田明显增加,林地、草地和未利用地大量减少。建设用地的增加占用了大量旱地、水田和林地,而旱地增加占用了大量的林地。研究区景观分布离散化增强,景观异质程度下降,形状更加规则,景观的抗干扰能力与整个生态系统稳定降低。回归分析结果表明,城市用地扩展主要发生在距离松花江较近的带状区域内,城市总体形态为带状城市。
The authors analyzed landscape change and spatial pattern of urban expansion in Jilin City based on remote sensing and GIS.The result of landscape pattern change analysis indicates that urban construction land,rural residential land,traffic land,glebe and paddy field are increasing obviously;woodland,grassplot and unused land are decreasing tremendously.The increase of the construction land occupied a lot of glebe,paddy field and woodland,meanwhile,the increase of glebe occupied a large amount of woodland.When the landscape dispersion increased in the studied area,the landscape heterogeneity decreased with simply landscape shape and anti-interference ability and stability for the whole ecosystem decreased.The result of regression analysis shows that urban land expansion mostly locates in the strip area near the Songhua River,and the urban form appears as a strip city in shape.
出处
《世界地质》
CAS
CSCD
2008年第3期332-337,共6页
World Geology
基金
国家自然科学基金项目(70433001
70573106)
