| 面向对象的鄱阳湖南矶湿地国家级自然保护区烧荒地信息提取 |
| |
| 引用本文： | 郭海会,王卷乐,周玉洁,吴小娜,侯海倩.面向对象的鄱阳湖南矶湿地国家级自然保护区烧荒地信息提取[J].地球信息科学,2014(3):499-506. |
| |
| 作者姓名： | 郭海会 王卷乐 周玉洁 吴小娜 侯海倩 |
| |
| 作者单位： | [1]中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京100101 [2]中国矿业大学（北京）,北京100083 |
| |
| 基金项目： | 环保公益性行业科研专项项目（201109075）;中科院信息化专项项目（XXH12504-1-01）. |
| |
| 摘 要： | 鄱阳湖南矶湿地国家级自然保护区内时常有烧荒事件发生,这对保护区生物多样性和区域生态环境造成一定影响,快速、便捷、准确地获取烧荒地信息是该区域环境管理的紧迫需求。本文针对2012年1月初鄱阳湖南矶山湿地发生的烧荒事件,采用环境与灾害监测预报小卫星影像数据,以鄱阳湖南矶湿地国家级自然保护区所在的新建县为研究区。以面向对象的遥感影像分析方法,通过对影像的多尺度分割,根据影像的光谱信息、空间特征、纹理特征等,构建烧荒地提取的规则集,对影像中的烧荒地信息进行提取,并利用混淆矩阵对信息提取结果进行精度检验。精度检验结果表明,烧荒信息提取的总体精度为99.38%,Kappa系数为0.89,证明面向对象的遥感信息提取方法可以有效、快速地提取烧荒地信息,避免了传统方法中的椒盐状破碎图斑的现象。
|
| 关 键 词： | 鄱阳湖 烧荒地 面向对象 信息提取 自然保护区 |
The Moorburn Information Extraction on Poyang Lake Nanji Wetland Nature Reserve Area Based on the Object-oriented Classification Method |
| |
| GUO Haihui,WANG Juanlet＊,ZHOU Yujie,WU Xiaona,and HOU Haiqian.The Moorburn Information Extraction on Poyang Lake Nanji Wetland Nature Reserve Area Based on the Object-oriented Classification Method[J].Geo-information Science,2014(3):499-506. |
| |
| Authors: | GUO Haihui WANG Juanlet＊ ZHOU Yujie WU Xiaona and HOU Haiqian |
| |
| Institution: | 2 State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 2. China University of Mining and Technology (Beijing), Beijing 100083, China) |
| |
| Abstract: | Moorburn was occurred frequently in Poyang Lake Nanji Wetland National Nature Reserve, which af- fected biodiversity and regional ecological environment to some extend. The traditional moorburn information extraction methods have their respective advantages, but it is not suitable for rapid and emergency moorburn monitoring. So it is an urgent demand to extract moorburn information for environmental management in Poyang Lake Nature Reserve in a quick, convenient and accurate way. This paper focused on the moorburn incident in Poyang Nanji Nature Reserve Area of Poyang Lake located. The environmental mitigation satellite data were ad- opted in Lake Nanji wetland in early January 2012, taking Xinjian County as the study area. The research was based on object-oriented remote sensing image analysis theory. Firstly, the image was multi-scale segmented and merged. The scale of the image segmentation and merging of 35 and 80 respectively. Then, the rule set of moor- burn extraction was built based on the spectral information, spatial feature, and texture feature of image. The spectral information rules were built based on Hue, NDVI, MTVI and the principal components after the princi- pal component analysis. The space characteristic rules were built based on area and roundness. The rules of tex- ture feature were built based on texture mean and texture entropy. Finally, the moorburn information was extract- ed, and the extraction result is tested with confusion matrix. Accuracy test shows that overall accuracy is 99.38%, and Kappa is 0.89. It demonstrates that the object-oriented method is a kind of effective, accurate and fast method for the extraction of moorburn information, and it can avoid salt and pepper broken figure spot in tra- ditional methods. The difference of moorburn information and other features is bigger in the first principal com- ponent after the PCA transformation in spectral characteristics and the texture entropy of texture features. But the difference is very small in space characteristics. The method can provide data support and technical reference for environmental protection, nature reserve management and moorburn management in the Poyang Lake area. |
| |
| Keywords: | Poyang Lake moorburn object-oriented information extraction nature reserves |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《地球信息科学》浏览原始摘要信息 |
| 点击此处可从《地球信息科学》下载免费的PDF全文 |
|
