Soil hygrometer

Abstract

The invention provides a soil hygrometer which is suitable for measuring an over-wet land surface environment, which comprises a housing body with horizontal push slabs vertically placed inside, several probe pedestals at different depths on the horizontal push slab, and a horizontal drive unit, wherein, at least one probe pedestal is installed with a soil humidity probe, and the horizontal push slab can be pushed by the horizontal drive unit, thereby the soil humidity probe can protrude from the side surface of the housing body; the soil humidity probe is also connected to a data processing module. The invention has an enclosed compact structure and employs a one-piece modularized waterproof and antifreeze design, and can be directly inserted into the area to be measured for long time work, and the laterally slidable probe set improves the measurement flexibility, thereby solving the big measurement error problem caused by the penetration of the land surface ponding in the over-wet land surface environment downwards along slits. The soil hygrometer is suitable for measuring soil humidity of different depth positions in the over-wet land surface environment.

Description

technical field [0001] The invention relates to a soil hygrometer, in particular to a soil hygrometer capable of measuring in an over-humid surface environment. Background technique [0002] Changes in soil moisture exert control over land-atmosphere energy fluxes and may shed light on the impact of climate on land. Soil moisture affects the hydrological cycle and energy exchange at different temporal and spatial scales by redistributing surface infiltration, surface runoff and evaporative rainfall. Therefore, accurate measurement of soil moisture is very important. [0003] However, in the over-humid surface environment, due to surface water and pore infiltration, conventional soil moisture measurement instruments often have large errors. When monitoring soil moisture in situ in a wet surface environment, the current common practice is to dig a hole of about one cubic meter in the ground, then install a soil moisture probe at a predetermined depth, and then bury it to res...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a soil hygrometer to solve the problems of large errors, heavy workload, complex instrument placement, and in-situ surface habitat monitoring under current conditions. There are problems such as large disturbances

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