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Detection system and detection method for dry deposition flux of atmospheric particulates in forest

A technology of atmospheric particulate matter and detection system, applied in the field of dry deposition flux detection system of atmospheric particulate matter in forests, can solve the problems of strong activity, small PM2.5 particle size, large specific surface area, etc.

Inactive Publication Date: 2015-06-03
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

Due to the small particle size, large specific surface area, and strong activity of PM2.5, it is very easy to absorb toxic and harmful substances (such as heavy metals, microorganisms, etc.), and it has a long residence time in the atmosphere and a long transportation distance, so it is harmful to human health and Atmospheric environmental quality has a greater impact

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  • Detection system and detection method for dry deposition flux of atmospheric particulates in forest
  • Detection system and detection method for dry deposition flux of atmospheric particulates in forest
  • Detection system and detection method for dry deposition flux of atmospheric particulates in forest

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Embodiment Construction

[0051] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] figure 1 A schematic structural diagram of a dry deposition flux detection system for atmospheric particulate matter in a forest is shown.

[0053] refer to figure 1 , the dry deposition flux detection system of atmospheric particulate matter in the forest of the present invention specifically includes:

[0054] Observation tower 10, described observation tower is arranged in described forest, and the height of described observation tower is higher than the canopy height of vegetation in described forest;

[0055] Two atmospheric particle samplers 20 installed on the observation tower on a vertical gradient, and three or two meteorological instruments 30 at the same height as each of the atmospheric particle samplers 20 .

[0056] Wherein, the first said atmospheric particle sampler 201 is installed in the position of the first preset distance ...

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Abstract

The invention relates to a detection system and a detection method for dry deposition flux of atmospheric particulates in a forest. The system comprises an observation tower, two atmospheric particulate samplers and two weather instruments, wherein the observation tower is arranged in the forest and the observation tower is higher than the canopies of plants in the forest; the two atmospheric particulate samplers are mounted on the observation tower in vertical gradient; the two weather instruments are as high as the two atmospheric particulate samplers. According to the system and the method provided by the invention, by determining deposition fluxes of atmospheric particulates at different heights in the forest, the dust-retention of the forest in the whole region is calculated, and a theoretical support is provided for evaluating the regulating function of the forest on atmospheric particulates.

Description

technical field [0001] The invention relates to the technical field of air quality monitoring, in particular to a system and method for detecting dry deposition flux of atmospheric particulate matter in forests. Background technique [0002] PM2.5 refers to particulate matter with an aerodynamic equivalent diameter of less than or equal to 2.5 μm, also known as fine particulate matter or particulate matter that can enter the lungs. PM2.5 particles have different shapes, such as spherical, square, needle-shaped, linear, etc. Due to the small particle size, large specific surface area, and strong activity of PM2.5, it is very easy to absorb toxic and harmful substances (such as heavy metals, microorganisms, etc.), and it has a long residence time in the atmosphere and a long transportation distance, so it is harmful to human health and Air quality has a greater impact. [0003] Forests have the unique function of producing retained PM2.5 and reducing its harm, which is a ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04
Inventor 余新晓陈俊刚孙丰宾伦小秀贾国栋刘旭辉莫莉陈静
Owner BEIJING FORESTRY UNIVERSITY
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