Soil ground respiration determination method and device thereof

Abstract

The invention relates to a soil basic respiration determining technique, concretely a soil basic respiration determining method and device. It uses absorbing plate as CO2 absorbing device, places soil sample at the bottom of a sealed container, places the absorbing plate in or below the middle of the sealed container and above the soil sample, makes routine culture, then takes out the absorbing plate and add in indicator and mix, and directly titrates in the absorbing plate, and then finds out the CO2 quantity released by the soil during the culture; its device includes a sealed container, splint, and supporting rod, where the supporting rod passes through the container cover and is installed with the splint in the sealed container and the absorbing plate is placed on the splint. It has good repetition and excellent stability.

Description

technical field [0001] The invention relates to soil basic respiration measurement technology, in particular to a soil basic respiration measurement method and a device thereof. Background technique [0002] The research on soil basic respiration has always been the focus of soil biochemistry, farmland microclimate, soil microbiology and soil environmental biology research (Document 1: Pekka Vanhala, Seasonal variation in the soil respiration rate in coniferous forest soils, Soil Biology & biochemistry, 34 (2002): 1375-1379). In recent years, due to global CO 2 As the concentration rises, the trend of global warming becomes more and more obvious, and the frequency of abnormal climate years is getting faster and faster, and the research on global changes is getting more and more attention (document 2: Lindsey E. Rustad, Thomas G. Huntington , & Richard D. Boone, Controls on soil respiration: Implications for climate change, Biogeochemistry, 48 (2000); 1-6). The relationshi...

AI Technical Summary

Problems solved by technology

This method is simple and easy to operate, and does not require large and precise instruments and expensive expenses. The disadvantage is that it cannot reflect the basic respiration intensity of the soil in its original state, and it is a method of indoor simulation.

When utilizing this method, the technical problem is that the beaker and the soil sample that are filled with NaOH are all placed on the bottom of the container, and the working surface area of ​​the beaker and the soil sample is not large enough, so the measurement result is just unstable, and there is also a process from the beaker to the soil sample. The transfer process of the triangular flask, the repeatability is not ideal

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