邯郸市中心城区城市绿地景观格局分析

Landscape Pattern Analysis of Urban Green Space Based on GF-2 Data:A Case Study of Handan City

以邯郸市中心城区为研究对象,基于GF-2影像数据,运用面向对象的分类算法提取邯郸市中心城区城市绿地信息,结合景观生态学原理和方法,从绿地景观斑块特征和景观异质性两个方面,选取斑块水平和景观水平两个尺度中的相关景观格局指数,定量分析了邯郸市中心城区城市绿地景观格局,并提出优化建议。研究结果表明:邯郸市中心城区绿地总面积为2805.52 hm^(2),城市绿地斑块总数多且整体空间分布不合理,各绿地景观斑块面积存在较大差异,斑块形状趋于规则,受人为干扰影响较为严重;附属绿地和防护绿地破碎化程度较高,景观连通性差,不能充分发挥其生态功能;公园绿地多集中在河流两岸。建议改善城市绿地景观的空间分布结构,提高公园绿地面积,增加各绿地类型间的连通性,提升城市绿地的整体性,丰富景观的多样性;在城市化发展的同时应注重当地生态环境的保护和城市绿地的合理规划,结合邯郸市悠久的历史文化底蕴,构建具有赵文化特色的城市绿地景观。

Based on the object-oriented classification algorithm,this paper extracts the information of urban green areas in the central urban area of Handan,and uses it as the basis,combined with the principles and methods of landscape ecology,to quantitatively analyses the landscape pattern of urban green areas in the central urban area of Handan from the aspects of green area patch characteristics and landscape heterogeneity,and selects the relevant landscape pattern indices in two scales of patch level and landscape level,and makes suggestions for optimization.The results of the study show that the total area of urban green space in the central city of Handan is 2805.52 hm^(2),the total number of urban green space patches is large and the overall spatial distribution is unreasonable,there are large differences in the area of each green space patch,the shape of the patches tends to be regular,and they are seriously affected by human interference;the degree of fragmentation of subsidiary green space and protective green space is high,the landscape connectivity is poor,and the ecological functions cannot be given full play;the park green space is mostly The parks are concentrated on both sides of the rivers.It is recommended to improve the spatial distribution structure of urban green space,increase the area of park green space,increase the connectivity between green space types,enhance the integrity of urban green space and enrich the diversity of the landscape;pay attention to the protection of the local ecological environment and the reasonable planning of urban green space while developing urbanization,and build an urban green space landscape with Zhao cultural characteristics by combining the long history and cultural heritage of Handan city.