An ingrown soil core system and method for measuring root biomass in a desert steppe

Abstract

The invention belongs to the technical field of plant root biomass measurement, and discloses an internal growth soil core system and method for measuring desert grassland root biomass. The system is provided with a stainless steel framework; the framework is wrapped by a nylon mesh; an inner pipe is placed in the framework; the top of the inner pipe is covered with a top cap. The method comprises the steps that the internal growth soil core system for measuring the desert grassland root biomass is placed around the root system of a plant, and rootless soil is contained in the nylon mesh; after a period of time, the root system of the plant penetrates through the soil contained in the nylon mesh, the system is taken out, the root system is separated out, and the change of the root system biomass is monitored. Part of space in mesh bags is filled with a PVC pipe, and the soil amount needing to be treated during subsequent root system separation and selection is reduced; the diameter of a single mesh bag is large, the sampling range is widened, the repeated number and damage to a sample plot are reduced, and the experiment proves that the device can effectively measure the desert grassland root biomass.

Description

technical field [0001] The invention belongs to the technical field of measuring plant root biomass, in particular to an endogenous soil core system and method for measuring desert steppe root biomass. Background technique [0002] The climate in the desert steppe area is arid, the annual precipitation is generally about 200 mm, and the vegetation coverage is low. Desert grassland is a type of grassland that transitions from grassland to desert. The grassland ecosystem is extremely fragile and is an important barrier for ecological security in northern my country. Grassland ecosystem is a dynamic system composed of climate, soil, plants, animals, microorganisms and humans, among which the material production and distribution of biomass and underground productivity in the system are the key links of the whole ecosystem. However, due to its concealment, rich layers, and changeable characteristics, the determination of the net productivity of plants in the system and the dynam...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the problems existing in the prior art are: the methods are not unified, and the standards of the methods applied by different scholars in different regions are different.

Drilling soil cores with small diameters in these areas will result in a small number of roots; in order to obtain enough roots, a large number of samples will lead to greater damage to the plot

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