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Estimation method for emission contribution of marsh wetland vegetation to N2O

A technology of emission contribution and wetland vegetation, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve the effect of reducing N2O emissions

Inactive Publication Date: 2015-08-05
福建师范大学地理研究所
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Problems solved by technology

[0003] The object of the present invention is to provide a kind of swamp wetland vegetation to N 2 Estimation method for O emission contribution, addressing vegetation N in swampy wetlands 2 Functional Assessment Problems in O Emissions

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  • Estimation method for emission contribution of marsh wetland vegetation to N2O
  • Estimation method for emission contribution of marsh wetland vegetation to N2O
  • Estimation method for emission contribution of marsh wetland vegetation to N2O

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Embodiment Construction

[0049] The present invention will be described in detail below in combination with specific embodiments.

[0050] The present invention takes the swamp wetland in the ecological restoration area of ​​the Yellow River Estuary as the research object, and studies the soil (water)-plant-atmosphere system of the swamp wetland in the growing season based on the in-situ static box-gas chromatography technology 2 Dynamic characteristics of O emission fluxes to obtain N in marsh wetland system in different periods 2 O emissions (T m ). Based on the static headspace-gas chromatography technique, the N content in the different water layers of the swamp wetland in the ecological restoration area was studied during the growing season. 2 O dissolved concentration and saturation, and calculated N at the water-air interface in different periods according to the double-layer model 2 O exchange flux (T w ). Considering the swamp wetland water (soil) system as a whole, and the N produced by...

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Abstract

The invention discloses an estimation method for emission contribution of marsh wetland vegetation to N2O. The estimation method includes that calculating the N2O emission flux of a marsh wetland system, calculating the dissolved N2O concentration of marsh wetland water body and calculating the N2O water-gas exchange flux of the marsh wetland to obtain an emission contribution value of the marsh wetland vegetation to the N2O. The estimation method for the emission contribution of the marsh wetland vegetation to the N2O is capable of precisely estimating the emission contribution of the marsh wetland vegetation to the N2O to provide important technical support for the research for lowering the N2O emission through intervening the marsh wetland vegetation growth conditions.

Description

technical field [0001] The invention belongs to the technical field of wetland ecological protection, and relates to a method for the protection of swamp wetland vegetation against N 2 O Estimation method for emission contribution. Background technique [0002] Plants in swampy wetlands N 2 There are two main roles in O emission: one is that plants can absorb the N that has been produced in the soil of swamp wetlands and dissolved in water 2 After O is absorbed into the plant through the root system, it is discharged into the atmosphere through the concentration gradient; the second is that the plant can affect the activity of soil (water) microorganisms. 2 O release, but about its N to wetland soil (water)-plant-atmosphere system 2 O emission contributions have not been effectively assessed. Currently, the determination of N in marsh wetland systems 2 The O emission flux is mainly based on the in-situ static box-gas chromatography technique, but this technique can only...

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Application Information

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IPC IPC(8): G01N33/00
Inventor 孙志高孙文广
Owner 福建师范大学地理研究所
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