Stem flow intercepting method

A trunk and bark technology, which is applied in the field of trunk flow interception, can solve the problems of unfavorable measurement of trunk flow water quality, inaccurate water interception, unsatisfactory effect, etc., and achieves the effect of simple and easy preparation and operation, not easy to decompose, and easy to purchase

Inactive Publication Date: 2011-03-30
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the existing tree trunk flow interception device requires asphalt, plasticine or soft impermeable materials that are difficult to obtain, not only the material is lacking, the operation is difficult and the effect is not ideal, because the water is easy to overflow, resulting in inaccurate water interception. Most of the materials used contain chemical substances that are easy to dissolve in water, which is not conducive to the determination of the quality of tree trunk water

Method used

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  • Stem flow intercepting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 measures larix

[0020] The required materials are thick plastic cloth with a length of 200cm and a width of 100cm; an elastic foam mulch film with a length of 150cm and a width of 100cm; a soft plastic pipe with an inner diameter of 2.5cm and a length of 200cm; a hard plastic pipe with an inner diameter of 2.0cm and a length of 15cm and 300cm of No. 10 iron wire. 2.5L plastic bucket, etc.

[0021] Trunk flow interception method: select three diameter classes of large, medium and small, and select three representative larch 1 for each diameter class, and use a sickle to cut off the rough bark at a distance of 1m from the ground to expose a smooth section of 20cm wide. Trunk, cut off the trunk while not hurting the trunk as the criterion, and simultaneously try to cut off the large and small gullies on the trunk to make it as smooth as possible.

[0022] Firstly, a watertight layer is formed, and the upper edge of the smooth part of the trunk where the bark...

Embodiment 2

[0031] Difference with embodiment 1 is: measure Quercus mongolica

[0032] The required materials are thick plastic cloth with a length of 100cm and a width of 100cm; a flexible foam film with a length of 100cm and a width of 80cm; a soft plastic tube with an inner diameter of 2.5cm and a length of 100cm; a hard plastic tube with an inner diameter of 2.0cm and a length of 15cm and 200cm of No. 10 iron wire. 2.5L plastic bucket, etc.

[0033] Trunk flow interception method: also select three diameter classes of large, medium and small, and select three representative Quercus mongolica for each diameter class, and use a sickle to cut off the rough bark at a distance of 1m from the ground to expose a smooth section of 15cm wide. Trunk is as the criterion not to injure the trunk while cutting off the trunk, and simultaneously remove the gap between the large and small barks on the trunk as far as possible, so that the trunk epidermis is as smooth as possible.

[0034] First form ...

Embodiment 3

[0043] The difference with embodiment 1,2 is: measure the

[0044] The required materials are thick plastic cloth with a length of 200cm and a width of 150cm; an elastic foam mulch film with a length of 200cm and a width of 150cm; a soft plastic tube with an inner diameter of 2.5cm and a length of 200cm; a hard plastic tube with an inner diameter of 2.0cm and a length of 15cm and 300cm of No. 10 iron wire. 2.5L plastic bucket, etc.

[0045] Trunk flow interception method: choose large, medium and small three diameter grades of Astragalus japonica, select three representative variegated willows for each diameter class, and use a sickle to cut off the rough bark at a distance of 1m from the ground to expose a section For a smooth trunk with a width of 20 cm, it is as the criterion not to injure the trunk while cutting off the trunk.

[0046] First form a watertight layer, remove the bark from the upper edge of the smooth part of the trunk and wrap it on the same level as the up...

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Abstract

The invention relates to a stem flow intercepting method comprising the following steps of: firstly forming a waterproof layer, winding plastic cloth on the smooth position of a stem with a tree bark removed, then winding a folded elastic membrane on the upper end of the smooth stem and outside the plastic cloth, and then tightening by using iron wires; secondly downwards rolling the upper edge of the plastic cloth to wrap the elastic membrane, and tightening by using the iron wires; thirdly forming a waterproof plastic bib, upwards rolling the lower edge of the plastic cloth so that the smooth stem with the tree bark removed is wrapped in the rolled lower edge, and tightening by using the iron wires; and finally fixing a conduit for guiding water flows on the lower edge of the formed waterproof plastic bib so that the water flows are guided to a measuring device. The stem flow intercepting method can be used for intercepting 95-98 percent of stem flows, is convenient to implement without any influence on water quality and meets the requirements for water quality measurement of the water yield of the stem flows.

Description

technical field [0001] The invention relates to a tree trunk flow interception method. Background technique [0002] In a watershed with forest vegetation, forest and water are the most active and influential factors in the ecosystem. It is of theoretical and practical significance to study the interception and stagnation of rainfall by forests. The trunk flow is formed by the rainfall that the branches and leaves gather to the trunk and the rainfall that falls directly on the trunk. Rainfall outside the forest, penetrating rain and trunk flow are not only different in quantity, but also in the starting time. Duration varies. In the process of rainfall, the rainfall first satisfies the water storage capacity of the canopy, that is, the water storage capacity of the leaves and the fine branches connected to the leaves. When the water storage capacity of the canopy is satisfied, penetrating rainfall begins to appear. At the same time, as the rainfall continues to increase,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/20G01F1/00
Inventor 苗永刚朱教君于立忠李玉清
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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