Effects of patch characteristics and within patch heterogeneity on the accuracy of urban land cover estimates from visual interpretation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Effects of patch characteristics and within patch heterogeneity on the accuracy of urban land cover estimates from visual interpretation
	Zhou, Weiqi ; Cadenasso, M. L.
刊名	Environmental Sciences & Ecology; Physical Geography; Geology
	2012
卷号	27 期号:9 页码:1291-1305
关键词	Visual interpretation Object-based classification HERCULES Accuracy Land cover composition and configuration Pattern analysis Spatial heterogeneity Urban systems
ISSN号	0921-2973
中文摘要	Landscape ecology links landscape pattern to ecological function. Achieving this goal hinges on accurate depiction and quantification of pattern, which is frequently done by visually interpreting remotely sensed imagery. Therefore, understanding both the accuracy of that interpretation and what influences its accuracy is crucial. In addition, imagery is pixel-based but landscape pattern exists, more realistically, as irregularly shaped patches. Patches may contain only one feature type such as trees, but, in some landscapes, patches may contain several different types of features such as trees and buildings. Using a patch-based approach, this paper investigates two types of variables-whole-patch and within-patch-that are hypothesized to influence the accuracy of visually estimating the cover of features within patches. A highly accurate reference map, obtained from object-based classification, was used to evaluate the accuracy of visual estimates of cover within patches. The effects of the variables on the accuracy of these estimates were tested using logistic regressions and multimodel inferential procedures. Though all variables significantly affected the accuracy, the within-patch configuration of features is the most significant factor. In general, errors of cover estimates are more likely to occur when patches are smaller or have more complex shapes, and features within a patch are (1) more diverse; (2) more fragmented; (3) more complex in shape; and (4) physically less connected. These results provide an important first step towards a quantitative, spatially explicit model for predicting error of cover estimates and determining under what circumstances estimation error is most likely to occur.
WOS记录号	WOS:000309873800005
公开日期	2014-11-26
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7972]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Zhou, Weiqi,Cadenasso, M. L.. Effects of patch characteristics and within patch heterogeneity on the accuracy of urban land cover estimates from visual interpretation[J]. Environmental Sciences & Ecology; Physical Geography; Geology,2012,27(9):1291-1305.
APA	Zhou, Weiqi,&Cadenasso, M. L..(2012).Effects of patch characteristics and within patch heterogeneity on the accuracy of urban land cover estimates from visual interpretation.Environmental Sciences & Ecology; Physical Geography; Geology,27(9),1291-1305.
MLA	Zhou, Weiqi,et al."Effects of patch characteristics and within patch heterogeneity on the accuracy of urban land cover estimates from visual interpretation".Environmental Sciences & Ecology; Physical Geography; Geology 27.9(2012):1291-1305.