Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Chlorophyll content detection method insensitive to leaf surface structure

A technology of chlorophyll content and detection method is applied in the detection field of chlorophyll content to achieve the effect of non-destructive testing

Active Publication Date: 2016-09-21
PEKING UNIV SHENZHEN GRADUATE SCHOOL
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, few researchers have tried to evaluate the estimation accuracy of vegetation index on chlorophyll content under the condition of considering the spectral reflectance of front and back sides of leaves at the same time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chlorophyll content detection method insensitive to leaf surface structure
  • Chlorophyll content detection method insensitive to leaf surface structure
  • Chlorophyll content detection method insensitive to leaf surface structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment discloses a method for detecting chlorophyll content that is insensitive to leaf surface structure, and is characterized in that the method includes the following steps:

[0037] 1) Obtain the hyperspectral reflectance of the plant leaf surface, and measure the chlorophyll content of the plant leaf:

[0038] 1-1) Using ASD 3 The leaf clip of the portable spectral measuring instrument (spectral analyzer, Boulder, CO, USA), collects the spectral reflection information of the front and back of the leaf within the wavelength range of 400-1000nm. During the collection process, try to select the same part for all leaves to avoid measuring the veins. Each leaf is measured three times, and a whiteboard calibration is performed every 5 minutes;

[0039] In 1-2), a hole puncher with a diameter of 6 mm was used to take out the leaf area where the reflectance of the leaf was measured, and five holes were punched for each leaf. Put the punched leaves into a mortar,...

Embodiment 2

[0060] In this example, fifty-five leaves of A. chinensis, tung flower tree and Sangria apetalum were collected in the mangrove forest, and their spectral reflectance and chlorophyll content were measured to develop a new chlorophyll index that is not affected by leaf surface information.

[0061] Overall, such as figure 1 As shown, the present embodiment discloses a method for detecting chlorophyll content insensitive to leaf surface structure, said method comprising the steps of:

[0062] 1) Obtain the hyperspectral reflectance of the plant leaf surface, and measure the chlorophyll content of the plant leaf;

[0063] 2) Analyze the correlation between all the band combination results of the nine types of vegetation indices and the chlorophyll content;

[0064] 3) Determine the most effective vegetation index for predicting chlorophyll content according to the correlation coefficient (r) and root mean square error (RMSE);

[0065] 4) Establish a regression equation between ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a chlorophyll content detection method insensitive to a leaf surface structure, and relates to the technical field of methods for measuring the chlorophyll content through an optical means. The method comprises the steps that hyperspectral reflectance of the plant leaf surface is obtained; the chlorophyll content is measured; a regression equation is established for nine types of vegetation indexes and the chlorophyll content, and a correlation coefficient and a root mean square error are calculated; a regression equation is established for 36 types of published vegetation indexes and the chlorophyll content, and a correlation coefficient and a root mean square error are calculated; the wave bands which are most sensitive and least sensitive to a change of the chlorophyll content are determined; a vegetation index type which is least sensitive to the leaf surface structure in the nine types of the vegetation indexes is determined; new vegetation indexes estimating the chlorophyll content are developed based on spectral information of the front and back of leaves, and the new vegetation indexes which are not sensitive to the leaf surface structure are used for detecting the chlorophyll content of the plant leaves. By means of the chlorophyll content detection method insensitive to the leaf surface structure, the content of chlorophyll in the plant leaves can be detected rapidly, accurately and nondestructively.

Description

technical field [0001] The invention relates to the technical field of methods for measuring chlorophyll content by optical means, in particular to a method for detecting chlorophyll content that is insensitive to leaf surface structure. Background technique [0002] Mangrove is a coastal habitat with important ecological significance. It is a special vegetation that grows in the intertidal zone of tropical and subtropical coasts. This biome. Mangroves grow widely in bays and estuaries along the southeast coast of my country, and are naturally distributed in Hainan, Guangdong, Guangxi, Fujian, Taiwan, Hong Kong and Macau. The Futian mangrove forest in Shenzhen Bay is the only mangrove ecosystem in the center of the city in my country, which is of great significance to the local ecological and economic development. However, due to human disturbance and climate change, Futian mangroves are in decline, and the current distribution area is only 369ha. The Shenzhen Municipal G...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/3577G01N21/359
CPCG01N21/3577G01N21/359
Inventor 李瑞利赵云霞牛志远
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com