干旱区生态环境知识资源中心(Arid): Analysis on Spectrum Feature for Water Content of Phragmites Reed Leaf

Arid

DOI	10.3788/LOP202158.0330005
	Analysis on Spectrum Feature for Water Content of Phragmites Reed Leaf
	Hou Yanjun; Dong Linlin
通讯作者	Hou, YJ (corresponding author), Xinzhou Teachers Univ, Dept Geog, Xinzhou 034000, Shanxi, Peoples R China.
来源期刊	LASER & OPTOELECTRONICS PROGRESS
ISSN	1006-4125
出版年	2021
卷号	58 期号:3
英文摘要	The reed leaves in Ebinur Lake Wetland Nature Reserve were sampled and water content was measured. The spectrum of reed leaves was measured by FieldSpec3 portable spectrometer. The original spectrum of reed leaves was smoothed and derivative transformation was carried out. The response characteristics of the first derivative of reed leaves to water content change under different differential window scales were analyzed, and the characteristics were extracted. The water content of reed leaves was characterized by characteristic parameters. The results show that when w = 1-15, the noise of the first-order spectral curve is difficult to he effectively reduced, which makes the contour of the spectral curve difficult to distinguish, and the spectral response characteristics caused by the change of leaf water content are not easy to judge. When w = 16- 30, the first derivative spectrum noise obtained can he effectively removed. Compared to the correlation coefficient between the first derivative spectrum of phragmites reed leaves and the water content in the 1374-1534 nm hand, the correlation coefficient in 1460 - 1500 nm band demonstrates small fluctuations, small standard deviations, and stable performance, the response feature between the whole first derivative spectrum within 1460 nm and 1500 nm, and water content variation has more consistency and significantly response. Take the average value of the first derivative spectral value in the 1460-1500 nm band as the characteristic parameter. Under the differential range of 1- 30, compare the characteristic parameter with other differential ranges. it is more suitable to indicate the change of reed leaf water content, which provides a new way for quantitative detection of reed leaf moisture by short-wave infrared reflectance spectroscopy in remote sensing monitoring of reed water in arid area.
英文关键词	spectroscopy short-wave infrared water content of phragmites reed leaf first derivative spectrum feature parameter
类型	Article
语种	中文
收录类别	ESCI
WOS记录号	WOS:000686477700040
WOS类目	Engineering, Electrical & Electronic ; Optics
WOS研究方向	Engineering ; Optics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364123
作者单位	[Hou Yanjun; Dong Linlin] Xinzhou Teachers Univ, Dept Geog, Xinzhou 034000, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Hou Yanjun,Dong Linlin. Analysis on Spectrum Feature for Water Content of Phragmites Reed Leaf[J],2021,58(3).
APA	Hou Yanjun,&Dong Linlin.(2021).Analysis on Spectrum Feature for Water Content of Phragmites Reed Leaf.LASER & OPTOELECTRONICS PROGRESS,58(3).
MLA	Hou Yanjun,et al."Analysis on Spectrum Feature for Water Content of Phragmites Reed Leaf".LASER & OPTOELECTRONICS PROGRESS 58.3(2021).