干旱区生态环境知识资源中心(Arid): 腾格里沙漠典型植物含水率与地物光谱的关系分析

Arid

	腾格里沙漠典型植物含水率与地物光谱的关系分析
其他题名	The Relationships between Spectral Features and Water Content of the Dominant Plant Species in the Tengger Desert
	王鹏龙; 张建明; 张春梅; 许洺山; 王磊
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2013
卷号	33 期号:3 页码:737-742
中文摘要	地物光谱特征不仅是遥感机理研究的重要内容,亦是遥感应用分析的重要依据。用ASD手持式光谱仪测定了腾格里沙漠10种典型植物的冠层光谱,对测得光谱数据进行包络线去除和一阶微分处理,并在实验室采用烘干法得到植物的含水率,运用相关系数法分析植物含水率与经包络线去除的光谱数据之间的关系,同时分析了不同含水率植物的红边特征。结果表明:研究区植物最大含水率为88.19%,最小含水率为37.34%;含水率与包络线去除的光谱数据在可见光(561~718nm)和近红外(861nm,894nm)波段均存在极显著相关性,并建立了两者之间的回归模型,说明可见光近红外波段可以反映沙漠植物的水分状况;不同含水率植物的红边参数有所差异。
英文摘要	The spectral features of ground objects are not just the significant content of mechanism research of remote sensing,but also the important basis of remote sensing application.In this paper,the canopy hyperspectral data of ten plants in the Tengger Desert were measured in-situ with a Fieldspec HandHeld spectroradiometer, and water content of the corresponding plants was measured in lab.The canopy hyperspectral data were processed in continuum removal and first derivative methods,the relationship between the water content of plants and continuum removal reflectance spectrum was analyzed by correlation coefficient method and characteristics of the red edge was analyzed at the same time.The results showed that the water content of main plants ranged from37.34%to 88.19%;Significant correlation was found between water content and normalized reflectance spectrum in visible(561-718 nm)and near-infrared(861 nm,894 nm) bands,and the linear regression model was built,which indicated that visible and near-infrared reflectance could reflect water content of desert plants;The characteristics of the red edge of desert plants with different water content vary.
中文关键词	光谱特征 ; 包络线去除 ; 一阶微分 ; 含水率 ; 腾格里沙漠
英文关键词	spectral features continuum removal first derivative water content Tengger Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4835687
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/2XILL650/230607
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	王鹏龙,张建明,张春梅,等. 腾格里沙漠典型植物含水率与地物光谱的关系分析[J]. 兰州大学,2013,33(3):737-742.
APA	王鹏龙,张建明,张春梅,许洺山,&王磊.(2013).腾格里沙漠典型植物含水率与地物光谱的关系分析.中国沙漠,33(3),737-742.
MLA	王鹏龙,et al."腾格里沙漠典型植物含水率与地物光谱的关系分析".中国沙漠 33.3(2013):737-742.