Automatic plant carbon cleaning and sequestration capability determination system and determination method

Abstract

The invention belongs to the technical field of plant net carbon sequestration capacity determination, and particularly relates to an automatic plant net carbon sequestration capacity determination system and a determination method. Comprising a plant artificial photosynthesis incubator controlled by an upper computer IPC and a PLC, a gas supply and exhaust unit and a gas online continuous automatic monitoring unit. The plant artificial photosynthesis incubator comprises a shell, a sealed inner working chamber is arranged in the shell, an LED lamp source, a temperature sensor, a humidity sensor, a pressure sensor and a constant-temperature and constant-humidity adjusting device are arranged in the inner working chamber, and the gas supply and exhaust unit comprises a gas inlet device and a gas exhaust device which are connected with the inner working chamber; the gas online continuous automatic monitoring unit comprises a first gas electromagnetic valve, a second gas electromagnetic valve, online infrared analysis equipment and online gas chromatographic analysis equipment. The device has two experiment systems of plant photosynthesis carbon sequestration and litter decomposition process carbon emission, and the accuracy of measured data is promoted; and the operation steps of the existing experiment are simplified.

Description

technical field [0001] The invention belongs to the technical field of determination of plant net carbon fixation capacity, in particular to an automated plant net carbon fixation capacity measurement system and a measurement method. Background technique [0002] In order to cope with the environmental problem of global warming, improving the carbon sequestration capacity of plants is one of the ways to reduce greenhouse gas emissions. 2 It is transformed into a variety of organic matter and fixed in the body to provide material and energy for its growth. It is the basic link of the growth and development process. It has a great carbon sink capacity and is in the regulation of atmospheric CO 2 and O 2 It plays an important role in the balance of carbon storage and improving the carbon sequestration and storage capacity of ecosystems. 2 As the concentration increases, the carbon sink size of plants also gradually expands. However, CO generated during litter decomposition ...

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Problems solved by technology

[0003] At present, there are many methods for measuring the net carbon sequestration capacity of plants, such as plot inventory method, eddy correlation method, box method, etc. The plot inventory method mainly calculates its carbon storage by estimating plant biomass, which can determine the The carbon sequestration capacity of plants, but there are problems such as difficulty in collecting plant samples, subjective restrictions on sample plot selection, and heavy workload, which makes it difficult to estimate plant biomass, and there are also errors in the estimation of biomass and carbon storage. , the accuracy of the data is difficult to be guaranteed. At present, based on the maturity of remote sensing technology, the method of estimating carbon storage through remote sensing data has become the current main research direction

The eddy correlation method directly measures the CO above the plants 2 The eddy current transfer rate is used to observe the net ecosystem productivity of plants, so as to evaluate its carbon source / sink ability. It is easy to operate and can realize continuous long-term monitoring of a specific ecosystem, but this method requires expensive and sophisticated instruments and analysis software. And when the CO of the air 2 When the eddy current rate is slow, the measured data error is large, and this method is not suitable for the determination of the carbon sequestration capacity of a single plant; 2 and CH 4 It has the advantages of convenient installation, simple operation, and high sensitivity. It is the main method to study the change of carbon flux of low plants such as farmland and grassland. However, the existence of a sealed box in the measurement process weakens the gas The spatial variability of the environment, and the box itself will also cause interference to the environment of the sampling area, such as temperature, humidity, air flow, pressure, etc., affecting the accuracy of the data

In summary, there are still some deficiencies in the current methods for measuring the carbon sequestration capacity of plants, and no system has been found that can measure the net carbon sequestration capacity of plants throughout their life cycle.

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