基于知识与规则的土地利用信息分层提取研究——以南京市都市区为例

doi:10.11870/cjlyzyyhj201507001

长江流域资源与环境 >> 2015, Vol. 24 >> Issue (07): 1079-1085.doi: 10.11870/cjlyzyyhj201507001

•　区域可持续发展　• 下一篇

基于知识与规则的土地利用信息分层提取研究——以南京市都市区为例

乔伟峰^1,2,3, 王亚华^2,3, 项灵志⁴

1. 中国科学院地理科学与资源研究所, 北京 100101;
2. 南京师范大学地理科学学院, 江苏南京 210023;
3. 江苏省地理信息资源开发与利用协同创新中心, 江苏南京 210023;
4. 武汉大学资源与环境科学学院, 湖北武汉 430079

收稿日期:2014-08-07 修回日期:2014-09-21 出版日期:2015-07-20
作者简介:乔伟峰(1975~),男,博士后,主要从事土地资源管理和GIS应用研究.E-mail:qwf@263.net
基金资助:
国家自然基金(41371172,41271189);中国博士后科学基金(2014M561040);中国博士后科学基金特别资助项目(2015T80127);江苏高校优势学科建设工程资助项目(164320H101)

HIERARCHICAL EXTRACTION OF LAND USE INFORMATION BASED ON KNOWLEDGE AND RULE——A CASE STUDY OF THE METROPOLITAN AREA OF NANJING

QIAO Wei-feng^1,2,3, WANG Ya-hua^2,3, XIANG Ling-zhi⁴

1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
2. School of Geography Science, Nanjing Normal University, Nanjing 210023, China;
3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;
4. School of Resource and Environment Science, Wuhan University, Wuhan 430079, China

Received:2014-08-07 Revised:2014-09-21 Online:2015-07-20
Contact: 王亚华,E-mail:Wangyahua@njnu.edu.cn E-mail:Wangyahua@njnu.edu.cn

摘要/Abstract

摘要： 为了克服利用统一分类模型难以有效提高土地利用分类精度的问题,为土地利用/覆被定性、定量信息的提取提供一种高精度、高效率的提取方法,将分层信息提取法和基于知识规则的信息提取方法相结合,基于对南京市都市区的土地利用时空特点和研究区TM影像数据中各地类波谱信息的分析,结合了地类提取指数模型、DEM数据、城市建成区边界等,充分利用地学先验知识,设计了一套土地信息分层提取的流程,对土地利用信息进行了提取。利用该方法对2012年南京市都市区的土地利用/土地覆被信息提取的总体精度达到了88.67%,Kappa系数达到了0.85。实践证明,基于知识与规则的土地利用信息分层提取方法提取精度较高,适用性强,对其他地区的土地利用/覆被信息分类提取也有一定的借鉴意义。

关键词: 知识与规则, 土地利用/覆被, 分层提取, 南京市都市区

Abstract: The purpose of this paper is to overcome the problem that the uniform classification model cannot be used to improve the accuracy of land use classification effectively, and to provide a method with high precision and efficiency to extract qualitative and quantitative information of land use/cover. In this paper, two extraction methods, i.e., the hierarchical information extraction method and the method based on knowledge and rule, are combined. The hierarchical information extraction method can create a cleaner extracting environment when extracting specific types of land use/cover. The method based on knowledge and rule can give full play to the role of priori knowledge and experience, and reference diverse assistant information comprehensively. The purpose of combining the two methods is to further improve the classification accuracy. Taking the metropolitan area of Nanjing as an example, a set of land use information hierarchical extraction process is designed and put into effect. In the extraction process, TM image spectrum information and the temporal and spatial characteristics of land use in study area are fully considered. Using different ways and data such as water extraction index model, Ratio Resident-area Index (RRI), NDVI, DEM data and the urban built-up area boundary, we extracted eight types of land use/cover, i.e., water, urban build-up area, rural build-up area, mining land, bare land, woodland, farmland, and urban green land. Specially, we constructed a build-up and quarry discrimination index (BQDI) to efficiently distinguish build-up area from mining/bare land, and make full use of elevation and slope information to extract woodland from vegetation coverage area. In addition, the urban build-up area boundary plays an important role in distinguishing urban build-up area and rural build-up area, farmland and urban green land, mining land and bare land. The results showed that the overall accuracy (OA) reached 88.67%, and the Kappa index reached 0.85 when extracting the land use/cover information of 2012 in study area. Besides, the overall accuracy on other years' information extraction were all higher than 87%, and the Kappa index were all more than 0.84. We concluded that the hierarchical land use information extraction method based on knowledge and rule possesses high precision and wide applicability. The method has a good reference value to land use/cover extraction practice in other regions. Further research should be undertaken to increase the degree of automation in information extraction process, the efficiency and accuracy of extraction in the future.

Key words: knowledge and rule, land use/cover, hierarchical extraction, the metropolitan area of Nanjing

中图分类号:

TP753

乔伟峰, 王亚华, 项灵志. 基于知识与规则的土地利用信息分层提取研究——以南京市都市区为例[J]. 长江流域资源与环境, 2015, 24(07): 1079-1085.

QIAO Wei-feng, WANG Ya-hua, XIANG Ling-zhi. HIERARCHICAL EXTRACTION OF LAND USE INFORMATION BASED ON KNOWLEDGE AND RULE——A CASE STUDY OF THE METROPOLITAN AREA OF NANJING[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2015, 24(07): 1079-1085.

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基于知识与规则的土地利用信息分层提取研究——以南京市都市区为例

HIERARCHICAL EXTRACTION OF LAND USE INFORMATION BASED ON KNOWLEDGE AND RULE——A CASE STUDY OF THE METROPOLITAN AREA OF NANJING

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