基于RS和GIS的南宁市绿地景观空间结构分析

Spatial Structure of Urban Greenbelt Landscspe in Nanning City Based on RS and GIS

以南宁市的绕城高速公路G7201以内的建成区的Landsat8影像为研究对象,在RS、Arcgis、ENVI以及Patch analyst技术支持下,运用景观格局生态学的理论和方法,对南宁市城市绿地景观格局结构进行分析。结果表明,绿地景观结构分布不合理,绿地斑块破碎化程度较高,南宁市中心城区绿地景观格局中农业用地比重最大,比重最小的廊道绿地板块多、面积小,破碎化程度高。建议南宁市在今后的城市绿地建设中,优化城市绿化格局,降低绿地破碎度,增强廊道绿地建设。通过带状的廊道绿地,使城市中的其他绿地类型连成一片,形成较好的生态走廊。

With the Landsat8 image of Nanning city within the city highway G7201 built area as the research object,in the RS,Arcgis,ENVI and Patch under the support of analyst technology,by using the theories and methods of landscape ecology,the landscape pattern of green space structure of Nanning city is analyzed.The results show that the green landscape structure is not reasonable,landscape fragmentation degree is higher,Nanning urban green space landscape pattern accounts for the largest proportion in agricultural land,and for the smallest proportion of more corridor green plates with small size,high degree of fragmentation.Suggestions are put forth for Nanning city green space construction in the future,such as city greening pattern optimization,reducing the space fragmentation,enhancing the construction of green corridors.Through the corridor green belt,the other types of green space in the city will link up into one,forming a good ecological corridor.