Method for determining emission amount of greenhouse gas from ruminant livestock
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A technology for greenhouse gases and emissions, which is applied to the measurement of greenhouse gases and the field of greenhouse gas emissions of ruminant livestock, to achieve rapid monitoring, overcome the high cost of experiments, and simple device fabrication.
Inactive Publication Date: 2015-01-07
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 with 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 metabolic box: As mentioned above, the sealed bag box includes a metabolic cage, a sealed cover, and a base. The metabolic cage is made of barbed wire, and the frame is reinforced with angle iron. The metabolic cage is 220 cm long. , 150cm wide, 170cm high; the sealing cover is made of polyethylene board, reinforced with angle iron around, the sealing cover is 240cm long, 180cm wide, and 180cm high; the metabolic cage is welded on the base, the base is made of stainless steel plate, the sealing cover and The base fits together, and there is a water seal groove around the base. The water seal groove is 6cm wide and 6cm high. There are 2 fans on the top of the metabolic cage, a...
Embodiment 2
[0040] Supplementary Feeding Yak CH in Cold Season 4 and CO 2 Daily emission characteristics
[0041] Three yaks (with an average weight of 250.6±11.4kg) were monitored for 5 days using the sealed respiratory metabolism box as described in Example 1, supplementary feeding and greenhouse gas collection methods.
[0042] During the test period, the yaks were supplemented with mixed cooking feed (45% corn, 35% highland barley and 20% bean cake) as the concentrate, and green hay as the coarse material. The composition of the diet is shown in Table 3.
[0043] Table 3, the chemical composition of yak diet during the test period (%)
[0044]
[0045] Supplementary Feeding Yak CH in Cold Season 4 and CO 2 The 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 experiment, the yak CH 4 There are two peaks in the d...
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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, relates to a method for measuring greenhouse gases, in particular, provides a method for measuring ruminant livestock greenhouse gases (CO 2 、CH 4 and N 2 O) method of emissions. Background technique [0002] Greenhouse gases refer to 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 radiation of specific wavelengths in the thermal infrared radiation spectrum emitted by the earth's surface, atmosphere and clouds, thereby causing the greenhouse effect. Since the industrial revolution, social production activities have caused the concentration of greenhouse gases in the atmosphere to continue to rise. 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...
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Patent Type & Authority Applications(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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