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遥感技术与应用  2010, Vol. 25 Issue (4): 510-514    DOI: 10.11873/j.issn.1004-0323.2010.4.510
研究与应用     
一种基于多光谱遥感影像的喀斯特地区裸岩率的计算方法初探

张盼盼1,2,胡远满1,肖笃宁1,李秀珍1,殷 洁1,2
1.中国科学院沈阳应用生态研究所,辽宁 沈阳 110016;
2.中国科学院研究生院,北京 100049
A Method of the Percentage of Bare Rock Calculation in Karst Areas Based on Multi-spectrum Remote Sensing Image
ZHANG Pan-pan1,2,HU Yuan-man1,XIAO Du-ning1,LI Xiu-zhen1,YIN Jie1,2
1.Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China; 
2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China
 全文: PDF(4066 KB)  
摘要:

石漠化是我国西南地区广泛分布的一种生态—地质灾害。石漠化地区的提取和等级的划分是石漠化研究的首要前提。裸岩率作为石漠化等级划分的一个重要指标,对其科学快速的运算,是石漠化等级划分和石漠化地区提取的基础。提出了一种基于多光谱遥感影像的裸岩率的计算方法,并选取贵州省普定县后寨河流域1987年的TM影像进行了实验。首先,对影像进行预处理获得影像对象,再通过波段运算提取后寨河流域的归一化植被指数NDVI和裸土指数BI,分别用来计算植被覆盖度和土壤裸露率,最后通过图层算术运算获得实验区的裸岩率。结果表明这种裸岩率的提取方法具有可行性。

关键词: 喀斯特地区裸岩率植被覆盖度土壤裸露率TM影像    
Abstract:

Karst rocky desertification is one of the most serious geo-ecological disaster in Southwestern China.The extraction of rocky desertification regions and grade division of rocky desertification are the most important premises to do rocky desertification research.The percentage of bare rock is an important index to do rocky desertification grade division.Using scientific and fast methods to calculate the percentage of bare rock is the basis for the extraction of rocky desertification regions and grade division of rocky desertification.We proposed a multi\|spectrum remote sensing image\|based method to calculate the percentage of bare rock and the TM image at 1987 of Houzhai stream in Puding County,Guizhou Province was chose as experiment data.Firstly,the image was processed to attain the image object.Then,extract the Normalized Difference Vegetation Index (NDVI) and Bare Soil Index (BI) from the image by band calculation.NDVI and BI were used to calculate vegetation coverage and soil bareness percentage,respectively.Finally,the percentage of bare rock could be calculated by making use of layers arithmetic operation.The experiment result shows that the method proposed in this paper has feasibility.

Key words: Karst area    Percentage of bare rock    Vegetation coverage    Soil bareness percentage    TM image
出版日期: 2010-10-21
基金资助:

国家重点基础研究发展计划课题(2006CB403201)资助。

通讯作者: 胡远满 E-mail:huym@iae.ac.cn。   
作者简介: 张盼盼(1984-),女,博士研究生,主要从事景观生态学研究。E\|mail:zhangpanpan82@sohu.com。
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引用本文:

张盼盼, 胡远满, 肖笃宁, 李秀珍, 殷 洁. 一种基于多光谱遥感影像的喀斯特地区裸岩率的计算方法初探[J]. 遥感技术与应用, 2010, 25(4): 510-514.

ZHANG Pan-Pan, HU Yuan-man, XIAO Du-ning, LI Xiu-zhen, YIN Jie. A Method of the Percentage of Bare Rock Calculation in Karst Areas Based on Multi-spectrum Remote Sensing Image. Remote Sensing Technology and Application, 2010, 25(4): 510-514.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2010.4.510        http://www.rsta.ac.cn/CN/Y2010/V25/I4/510

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