摘要
为研究城市景观格局与生态过程之间的关系,需对城市屋顶景观格局进行定量描述.基于岛屿生物学理论,考虑屋顶面积和隔离度因素,构建了3个测度指数:最小离地高度(minimum height,MIH)衡量建筑屋顶斑块与地面的联系或隔离程度;可达性指数(accessibility index,ACI)反映生物从地面到达屋顶斑块停留甚至栖息的可能性;阻力指数(resistance index,RI)测度生物及其他生态要素在地面和屋顶区域内流动及栖息的难易程度.实证研究和相关性分析结果表明:3个指数值结果均在界定范围内;MIH和ACI之间存在很强的负相关关系;MIH与RI、ACI与RI相对独立.运用景观指数规划生态网络,可有效增加景观连接度.
A prerequisite to establish the interrelation between the urban landscape pattern and ecological process is to make a quantitative description of roof landscape patterns. Taking roof area and isolation factor into account, three measuring indexes are constructed by the theory of island biography. Of them, the minimum height （MIH） measures the contact or segregation between the building roof plaque and the ground; the accessibility index （ACI） reflects the possibility for living creatures to reach the roof from the ground, stay and even inhabit here; and the resistance index （RI） measures the difficulty of biological and other ecological factors in flowing and inhabiting on the ground and within the roof area. Empirical studies and correlation analysis results show that the three index values are within the defined range; there is a strong negative correlation between MI and ACI; MIH and RI, as well as ACI and RI, are relatively independent. The use of landscape indices in scientific planning of ecological networks can effectively increase landscape connectivity.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2016年第5期951-957,共7页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(51108381)
中央高校基本科研业务专项资金资助项目(2682014CX111)
