Tree leaf surface dust amount determination method and system
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A technology for determining methods and dust, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as insufficient research depth and inability to solve environmental pollution control
Inactive Publication Date: 2015-02-25
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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All of these have achieved corresponding results, but their research objects are all concentrated on agriculture, and there are few related studies on the forestry of trees or forests that have a greater effect on environmental purification, and their research is not deep enough to solve the problem. Corresponding environmental pollution control and other practical issues
[0005] The technical means of environmental pollution monitoring have gradually matured, but they still have limitations
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Embodiment 1
[0050] The leaves of Euonymus euphratica with different amounts of dust on the leaves have differences in the absorption and reflection of light in different wavelength bands during the growth process, resulting in different reflection spectral characteristics of the leaves. The amount of dust on leaves of Populus euonymus was classified.
[0051] Such as figure 1 As shown, the present embodiment provides a method for determining the amount of dust on the leaves of trees, comprising the steps of:
[0052] 1) Establish the estimation equation and determine the parameters of the equation:
[0053] Step 1: Collect leaf samples;
[0054] Step 2. Take the weight of the blade with an electronic balance of 1 / 10,000;
[0055] Step 3, measure the reflection spectrum of the blade before dust removal with a portable spectrometer;
[0056] Step 4: Wash the dust on the surface of the blade with deionized water;
[0057] Step 5: take the weight of the blade after dedusting;
[0058] S...
Embodiment 2
[0129] Embodiment 2; A system for determining the amount of dust on the surface of tree blades, comprising:
[0131] Used to obtain the spectral reflectance of the leaves in each band;
[0132] a calculation unit for obtaining spectral parameters from reflectance spectral values of leaves;
[0133] The determining unit is used for determining the amount of dust on the surface of the blade by using the inversion model of the amount of dust on the leaf surface according to the spectral parameters.
[0134] The leaf reflectance spectrum acquisition device includes the FieldSpec3 portable near-infrared spectrometer produced by the American ASD (Analytical Spectral Device) company for spectral measurement.
[0135] According to the present invention, the determination of the amount of dust on the leaf surface can be realized only by a portable spectrometer without a high-precision electronic balance. Therefore, the present ...
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Abstract
The invention discloses a tree leaf surface dust amount determination method and system, and belongs to the field of measurement and computer technology. The method comprises the following steps of building an estimatation equation and determining equation parameters, collecting leaf samples, weighing leaf weight by a one over ten-thousand analytical balance, measuring a reflected light spectrum of the leaves before dedusting by a portable spectrometer, removing dust on the leaf surfaces by deionized water, weighing leaf weight after dedusting, measuring a reflected light spectrum of the leaves after dedusting by the same method, acquiring spectrum parameters and building a relationship between the spectrum and leaf surface dust amount. The method can realize determination of leaf surface dust amount by the portable spectrometer without a high-precision electronic balance and thus the leaf surface dust amount can be estimated by the common spectrometer. The method is very suitable for plant pollution degree estimation and haze prevention and control measure optimization.
Description
technical field [0001] The invention relates to a method and system for determining the amount of dust on tree leaves, belonging to the technical field of measurement and computer. Background technique [0002] The air quality in our country is deteriorating day by day, and the pollution degree of atmospheric particulate matter has increased significantly. In recent years, fog and haze have occurred frequently in Beijing. In addition to affecting breathing and causing harm to people's health, smog weather has caused direct harm to traffic, plant growth, etc. Therefore, dust pollution has been highly valued by people. It can be seen that the monitoring and prevention of air pollution is urgent. [0003] Euonymus is one of the typical urban greening trees, with dense branches and leaves, evergreen all year round, bright green leaves, widely cultivated in various provinces, often used for ornamental purposes, superior to its extreme resistance to pruning, it is a good hedge m...
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 吴春燕王雪峰
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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