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	基于Hyperion高光谱数据的植被冠层含水量反演
其他题名	Estimation of Vegetation Canopy Water Content Using Hyperion Hyperspectral Data
	宋小宁 1; 马建威 1; 李小涛 2; 冷佩 1; 周芳成 1; 李爽 1
来源期刊	光谱学与光谱分析
ISSN	1000-0593
出版年	2013
卷号	33 期号:10 页码:2833-2837
中文摘要	植被冠层含水量广泛应用于农业、生态和水文等研究中。本文基于PROSAIL模型,建立了利用Hyperion高光谱数据定量反演植被冠层含水量的模型。首先,PROSAIL模型模拟植被冠层反射特征表明,970 nm水吸收带右侧曲线(980~1 070 nm)一阶导数D_(980~1 070)与冠层含水量关系密切,决定系数达0.96。基于此,利用Hyperion数据的983, 993, 1 003, 1 013, 1 023, 1 033, 1 043, 1 053, 1 063 nm共9个波段计算D_(980~1 070),并利用所建模型反演植被冠层含水量。最后,利用黑河流域盈科绿洲的实测数据对反演结果进行了验证,其平均相对误差为12.5%,均方根误差在0.1 kg·m~(-2)内,结果表明该模型可靠。该研究可以为大范围获取植被含水量信息提供有效方法。
英文摘要	Vegetation canopy water content (VCWC) has widespread utility in agriculture, ecology and hydrology. Based on the PROSAIL model, a novel model for quantitative inversion of vegetation canopy water content using Hyperion hyperspectral data was explored. Firstly, characteristics of vegetation canopy reflection were investigated with the PROSAIL radiative transfer model, and it was showed that the first derivative at the right slope (980~1 070 nm) of the 970 nm water absorption feature (D_(980?1070)) was closely related to VCWC, and determination coefficient reached to 0. 96. Then, bands 983, 993, 1 003, 1 013, 1 023, 1 033, 1 043, 1 053 and 1 063 nm of Hyperion data were selected to calculate D_(980~1070), and VCWC was estimated using the proposed method. Finally, the retrieval result was verified using field measured data in Yingke oasis of the Heihe basin. It indicated that the mean relative error was 12.5%, RMSE was within 0.1 kg ? m~(-2) and the proposed model was practical and reliable. This study provides a more efficient way for obtaining VCWC of large area.
中文关键词	PROSAIL模型 ; 一阶导数 ; 植被冠层含水量
英文关键词	Hyperion Hyperion PROSAIL model First derivative Vegetation canopy water content
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:4944191
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229728
作者单位	1.中国科学院大学资源与环境学院, 北京 100049, 中国; 2.中国水利水电科学研究院, 北京 100048, 中国
推荐引用方式 GB/T 7714	宋小宁,马建威,李小涛,等. 基于Hyperion高光谱数据的植被冠层含水量反演[J],2013,33(10):2833-2837.
APA	宋小宁,马建威,李小涛,冷佩,周芳成,&李爽.(2013).基于Hyperion高光谱数据的植被冠层含水量反演.光谱学与光谱分析,33(10),2833-2837.
MLA	宋小宁,et al."基于Hyperion高光谱数据的植被冠层含水量反演".光谱学与光谱分析 33.10(2013):2833-2837.