Adjustable penetration rainfall measuring device

Abstract

The invention relates to an adjustable penetration rainfall measuring device. The adjustable penetration rainfall measuring device comprises an inner framework which is fixedly arranged on a trunk ina sleeving mode, and an outer framework which is located on the periphery of the inner framework and is fixedly arranged; waterproof cloth which is closed in the circumferential direction is fixed onthe inner framework and the outer framework; a rainwater channel is formed between the waterproof cloth on the inner framework and the waterproof cloth on the outer framework; a collecting channel communicated with the rainwater channel is further fixedly arranged below the outer framework; and a water outlet of the collecting channel is communicated with a flow meter. According to the adjustablepenetration rainfall measuring device, rotation of an upper supporting rod is capable of adjusting rainwater collecting zone area to be larger, and collection and measurement of penetration rainfall of different trees can be realized; a top elastic filter screen can generate elastic deformation according to the change of opening angles of the frameworks, is high in adaptability to trees with different crown sizes, and can prevent measurement from being interfered by fallen leaves and other falling objects; fastening locking rings and supporting rods can enhance the stability of the whole structure without influencing normal growth of trees, and measurement result deviation caused by interference of factors such as wind power is reduced.

Description

technical field [0001] The invention relates to the field of forest hydrological measurement devices, in particular to an adjustable penetrating rainfall measuring device, which is mainly used for measuring the penetrating rainfall in areas with low forest canopy density, so as to facilitate further calculation of canopy interception. Background technique [0002] Penetrating rain is the part of atmospheric precipitation that falls to the ground after being intercepted by the vegetation canopy in vegetation-covered areas. Different tree species have different proportions of penetrating rain to atmospheric precipitation. From the perspective of forest ecohydrology, when precipitation falls to the forest land, part of it forms stem flow along the branches, the part remaining on the branches and leaves is intercepted by the tree crown, and the other part falls to the ground through the gaps between branches and leaves, which is penetrating rain. However, the interception of ra...

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Problems solved by technology

However, the interception of rainfall by the canopy is difficult to be directly measured due to the influence of forest canopy density, meteorological factors, and plant factors; and it is difficult to adjust the measurement range of the existing device for measuring penetrating rain according to the size of the canopy of different types of trees. As a result, problems such as inaccurate penetrating rainfall measurement, high modification costs, and lack of practicability are still lacking. Therefore, there is still a lack of devices that can adjust the rainwater collection area

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