干旱区生态环境知识资源中心(Arid): AlbedoNDVI特征空间及沙漠化遥感监测指数研究

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	AlbedoNDVI特征空间及沙漠化遥感监测指数研究
其他题名	Albedo-NDVI Space and Remote Sensing Synthesis Index Models for Desertification Monitoring
	曾永年 1; 向南平 1; 冯兆东 2; 徐豁 3
ISSN	1000-0690
出版年	2006
卷号	26 期号:1 页码:75-81
中文摘要	利用遥感数据和野外调查数据分析了沙漠化与地表定量参数之间的关系，提出了Albedo-NDVI特征空间的概念以及基于Albedo-NDVI特征空间的沙漠化遥感监测模型，即沙漠化遥感监测差值指数模型（DDI）。这个模型充分利用了多维遥感信息，指标反映了沙漠化土地地表覆盖、水热组合及其变化，具有明确的生物物理意义。而且指标简单、易于获取，有利于沙漠化的定量分析与监测。
英文摘要	Normalized Difference Vegetation Index （NDVI） and land surface albedo are very important biophysical parameters of land surface. In this paper we analyzed quantitatively the relationship between the severity of desertification and vegetation index （NDVI） and albedo. Through experiment and theoretical reasoning, we pro- posed a conception of Albedo-NDVI space and discussed its biophysical characteristics. Then, we analyzed the locations of different land cover classes and the trajectory of desertification in the Albedo-NDVI space. This knowledge can be used to improve current strategies for desertification mapping and change monitoring, by defining measurements in this feature space. Therefore, we present a methodology to monitor severity of desertification. Desertification field data, available data in the literature, and ancillary data were linked with land cover characteristics （vegetation index, land surface albedo） derived from Landsat ETM ＋ multispectral image. The desertification synthetic index, desertification difference index （DDI） , was produced, which combined information contained in the Albedo-NDVI space. This synthesis index is easy to use and possess biophysical properties of the land surface. We proposed this synthesis index as powerful one for desertification assessment.
中文关键词	Albedo-NDVI特征空间 ; 沙漠化指数 ; 遥感监测
英文关键词	Albedo-NDVI Space synthesis index of desertification remote sensing
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENGINEERING AEROSPACE
WOS研究方向	Engineering
CSCD记录号	CSCD:2296131
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219494
作者单位	1.中南大学信息物理工程学院, 长沙, 湖南 410083, 中国; 2.兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国; 3.华北科技学院建筑工程系, 北京 101601, 中国
推荐引用方式 GB/T 7714	曾永年,向南平,冯兆东,等. AlbedoNDVI特征空间及沙漠化遥感监测指数研究[J]. 兰州大学,2006,26(1):75-81.
APA	曾永年,向南平,冯兆东,&徐豁.(2006).AlbedoNDVI特征空间及沙漠化遥感监测指数研究.,26(1),75-81.
MLA	曾永年,et al."AlbedoNDVI特征空间及沙漠化遥感监测指数研究".26.1(2006):75-81.