摘要
利用乌鲁木齐市2002年QuickBird遥感数据,采用eCognition面向对象的多尺度分割技术提取城市绿地信息,应用景观生态学分析方法,对乌鲁木齐市城市绿地景观结构及其多样性进行系统分析。乌鲁木齐市建成区绿地斑块面积3 612 hm2,斑块数量47 280块,新市区绿地斑块面积最大斑块数量最多,水磨沟区绿地面积较小斑块数量最少。附属绿地斑块面积最大斑块数量最多,生产绿地斑块面积最小斑块数量最少。乌鲁木齐市绿地景观多样性指数为1.98,最大多样性指数2.58,绿地分布不均匀。景观斑块密度为1 308.97块/km2,沙依巴克区绿地斑块破碎,水磨沟区绿地斑块相对较完整。各种绿地类型中,居住绿地景观破碎化程度最高,公共绿地、生产绿地景观较完整。
Based on the data collected by remote sensing technology,the landscape structure and dversity of urban Greenland in Urumqi were analyzed,by use of eCognition on muliti-resolution image segmentation and object-oriented image classification method, with principles and metheds of landscape ecology. They were analysed about mean patch area index,the diversity index,the dominance index,the evenese index,the fragmental index, the corridor density index, et. al. The results showed that urban greenland landscape patch area is 3 612 hm^2 ;landscape patch number is 47 280 pieces,mean patch area is 764 m^2 in Urumqi. In terms of area and number of landscape patch, patch area is the largest and patch number is the maximum in the Xinshi region of Urumqi,but patch area is the smallest and patch number is the smallest in the Shuimogou region of Urumqi. It is mainly because of the most area in the Xinshi region,the Shuimogou region area is the smallest. Affiliated greenland patch area is the maximum, and patch number is the greates,but production greenland patch area is scattered, the diversity index is 1.98, the dominance index is 0.23, the evenese index is 0.77,the fragmental index is 1308.97 pieces/km^2,the corridor density index is 0. 906 km/km^2. In a word,greenland landscape distritrbute is not even,fragmental dgree is higher,corridor density is lower.
出处
《新疆农业大学学报》
CAS
2008年第2期71-75,共5页
Journal of Xinjiang Agricultural University
基金
乌鲁木齐市规划委员会项目(20042090)
乌鲁木齐市科技局项目(065D021)
