Rubber forest soil respiration measuring method

Abstract

The invention discloses a rubber forest soil respiration measuring method, comprising the following steps: selecting sample plots with different ages in a rubber forest; arranging a repeat sample plot on each sample plot; arranging four treatment regions on each repeat sample plot, wherein the four treatment regions comprise a treatment region for removing non-root system soil rings and reserving a litter layer, a treatment region for removing root system soil rings and reserving a litter layer, a treatment region for removing non-root system soil rings and removing a litter layer and a treatment region for removing non-system soil rings and removing a litter layer; and measuring each parameter of the soil respiration of the treatment regions in real time by utilizing a soil respiratory chamber measuring system equipped for a soil respiration measuring instrument, and simultaneously measuring environmental factors. By treating the measured sample plots region by region, the method of the invention measures the fixed point in situ at the condition of not damaging the original soil and biology, effectively separates each component value of the components of the soil respiration, is beneficial for improving the measuring accuracy, and breaks away from the restriction caused by scientific research conditions; and the obtained measuring value can satisfy the requirements of the scientific research.

Description

technical field [0001] The invention relates to the problem of soil respiration in global carbon cycle research, in particular to a rubber plantation soil respiration measurement method. Background technique [0002] Carbon is a key component of living organisms on the earth. The global carbon cycle is the most important biogeochemical cycle on the earth. It dominates other material cycles in the surface system, profoundly affects the living environment of human beings, and determines whether the surface system is healthy or not. Therefore, carbon cycle research is one of the main research directions of global biogeochemistry. [0003] In terrestrial ecosystems, soil is the largest carbon pool (about 1600 Pg), about twice the carbon in the atmosphere and three times the carbon pool in living plants. However, according to the third assessment report of the IPCC (Intergovernmental Panel on Climate Change), the greatest uncertainty in the current global carbon cycle research m...

AI Technical Summary

Problems solved by technology

The disadvantage of this technique is that its use will obviously change the physical state of the measured surface; when sampling, it will cause deviations due to the compression of the chamber and the negative pressure during pumping

[0017] It is especially important that the above measurement methods cannot separate the values ​​of each component of soil respiration. In the study of global carbon cycle, the value of each component of soil respiration must be known

Images