A method for measuring greenhouse gas emissions of ruminant livestock
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A greenhouse gas and emission technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve the effect of overcoming expensive test costs, rapid monitoring, and simple device manufacturing
Inactive Publication Date: 2016-05-25
CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
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Existing methods for measuring the greenhouse gas emission rate of ruminant livestock mainly include breathing mask method, tracer method, in vitro gas production method, etc. However, these methods have certain limitations in the process of operation
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Embodiment 1
[0023] Comparison of greenhouse gas emissions from Tibetan sheep in different age gradients
[0024] Comparison of greenhouse gas emissions from Tibetan sheep with different age gradients, such as figure 1 As shown, the specific steps are as follows:
[0025] 101. Making a removable sealed respiratory metabolism box: As mentioned above, the sealed bag box includes three parts: a metabolic cage, a sealed cover, and a base. The metabolic cage is made of wire mesh, the frame is reinforced with angle iron, and the metabolic cage is 220cm long. , Width 150cm, height 170cm; the sealing cover is made of polyethylene plate, the surrounding is reinforced with angle iron, the sealing cover is 240cm long, 180cm wide, and 180cm high; the metabolic cage is welded to the base, the base is made of stainless steel, and the sealing cover is The base fits together, and there is a water sealing groove around the base, the water sealing groove is 6cm wide and 6cm high. There are 2 fans on the top of ...
Embodiment 2
[0040] Cold Season Supplementary Feeding Yak CH 4 And CO 2 Daily emission characteristics
[0041] Using the sealed respiratory metabolism box, supplementary feeding method and greenhouse gas collection method as described in Example 1, 3 yaks (average weight 250.6±11.4 kg) were monitored for 5 days.
[0042] During the experiment, the concentrated feed of the yak supplementary diet was mixed cooking feed (mainly corn 45%, highland barley 35% and bean cake 20%), and the coarse feed was green hay. The dietary components are shown in Table 3.
[0043] Table 3, the chemical composition of the yak diet during the test period (%)
[0044]
[0045] Cold Season Supplementary Feeding Yak CH 4 And CO 2 Daily emissions are shown in Table 4
[0046] Table 4. Supplementary feeding of yak CH in cold season 4 And CO 2 Daily emissions (unit: g·head -1 ·D -1 )
[0047]
[0048] Result analysis
[0049] During the test, yak CH 4 The daily emission curve has two peaks, and the appearance time is also the ...
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Abstract
The invention relates to a method for determining the emission amount of greenhouse gas from ruminant livestock. A sealed type respiratory metabolism box-gas chromatography combined method is used for determining the emission amount of greenhouse gas from the ruminant livestock. The method comprises the following steps: making a movable sealed type respiratory metabolism box; testing the adaptation of the ruminant livestock; using a method for collecting greenhouse gas samples; detecting the content of CO2, CH4 and N2O in the greenhouse gas samples; calculating the emission amount of greenhouse gas from the ruminant livestock. Through the adoption of the method disclosed by the invention, the emission amount of greenhouse gas from the ruminant livestock can be conveniently and accurately measured, and a greenhouse gas emission list with a raise livestock source can be perfected. At the same time, the method provided by the invention, which is also a method for screening superior feed, provides support for realizing the emission reduction of the greenhouse gas for the ruminant livestock. The method has dual benefits of economy and environmental protection for animal husbandry, has the characteristics of economy, simplicity, easy operation, accurate results and the like, and is suitable for the determination of the emission rate of the gas in the greenhouse for the ruminant livestock.
Description
Technical field [0001] The invention belongs to the field of atmospheric environment monitoring, and relates to a method for measuring greenhouse gases. Specifically, it provides a method for measuring greenhouse gases (CO 2 , CH 4 And N 2 O) Methods of emissions. Background technique [0002] Greenhouse gas refers to the natural or man-made gas components in the atmosphere, such as carbon dioxide (CO 2 ), methane (CH 4 ), nitrogen oxides (N 2 OX), etc., these gases can absorb and release specific wavelength radiation in the thermal infrared radiation spectrum emitted by the earth's surface, atmosphere and clouds, which in turn leads to the greenhouse effect. Since the Industrial Revolution, social production activities have continuously increased the concentration of greenhouse gases in the atmosphere. Globally, livestock production has become a major source of greenhouse gas emissions, and livestock and their by-products actually emit at least 32.564 billion tons of CO 2 Greenh...
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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N1/22
Inventor 徐田伟胡林勇徐世晓李善龙赵娜关定国都耀庭葛世栋
Owner CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
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