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A forest precipitation station

A rainfall station and forest technology, which is applied in the fields of forest hydrology and forest ecology, can solve the problems of calculation error of interception, limit the research and development of forest hydrology and ecology, etc., and achieve fast and easy installation and accurate canopy interception Effect

Pending Publication Date: 2018-02-02
NANJING HYDRAULIC RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the errors in the current methods of measuring the first three, it will inevitably lead to large errors in the calculation of interception.
Therefore, there is still a lack of devices that can accurately measure the total rainfall, through-rainfall and stem flow on the forest at the same time, which limits the development of forest hydrology and ecology research.

Method used

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  • A forest precipitation station
  • A forest precipitation station
  • A forest precipitation station

Examples

Experimental program
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Effect test

Embodiment 1

[0027] like figure 1 As shown, a forest rainfall station includes three parts: a total rainfall measurement device on the forest, a penetration rain measurement device and a trunk flow measurement device.

[0028] The total rainfall measuring device on the forest adopts a ladder-type high pole 1 composed of two galvanized iron pipes with a diameter greater than 10cm. A tipping bucket rain gauge 2 is arranged on the top of the pole, and the top of the pole is fixed on the ground by three steel cables 3 in three directions.

[0029] The penetration rain measuring device is supported by two main beams 4 on both sides of the tree trunk 17, and the main beams are supported by four central columns 5, and the small angle inclination is less than 10 degrees toward the outlet of the penetration rain measurement device. A rectangular frame is erected to cover the overall projection of the canopy of the monitoring tree group. The frame is composed of two side beams 6 parallel to the main...

Embodiment 2

[0035] On the basis of Example 1, if the specific metering of the stem flow of each tree and the flow through the rainwater catchment surface on both sides is not considered, such as image 3 As shown, all trunk stem flows can be combined via hoses to a 0.4-0.6 liter / bucket tipping bucket flow meter 16, and the outflow from the two buffer buckets 12 can be pooled into a 1-3 liter / bucket tipping bucket flow 14, which can save costs.

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Abstract

The invention relates to a forest precipitation station and belongs to the technical field of forest hydrology and ecology. The forest precipitation station comprises an above-forest total rainfall measuring device, a through fall measuring device and a trunk sap flow measuring device. The above-forest total rainfall measuring device comprises a ladder type high pole erected from the ground, whichis higher than a forest, a tipping-bucket rain recorder arranged at the top of the pole, and wire ropes used for fixing the high pole. The through fall measuring device comprises two main beams, sidebeams parallel to the main beams, side beams perpendicular to the main beams, two main poles, four side poles, a plurality of inclined beams, a plurality of handrails, two large funnels with filter screens, two buffering buckets, two hoses, two tipping-bucket rain recorders, and multiple layers of plastic cloths fixed via strong magnetic sheets. The trunk sap flow measuring device comprises trunk-mounted closure troughs, hoses and tipping-bucket rain recorders. The forest precipitation station can obtain more accurate canopy interceptions by accurately monitoring the above-forest total rainfall, the through fall and the trunk sap flow, thereby providing scientific bases for research of forest hydrology and ecology.

Description

technical field [0001] The invention relates to a forest rainfall station, in particular to a forest rainfall station that can accurately and real-time measure the total rainfall, penetration rainfall, trunk flow and interception in the forest, belonging to the technical fields of forest hydrology and forest ecology. Background technique [0002] Rainfall falls on the tree canopy, part of which is intercepted by tree branches and leaves, part of which falls through the canopy to the ground (ie, penetration rain), and part of which is confluenced by branches and flows through the trunk to the root (ie, stem flow). The redistribution of rainfall by trees changes the distribution pattern of rainfall reaching the ground, making the distribution of rainfall uneven under forest, resulting in a different runoff mechanism from that in non-forest areas. The uneven distribution of rainfall under forest will inevitably lead to changes in the distribution of soil moisture, nutrients, mi...

Claims

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Application Information

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IPC IPC(8): G01W1/14
CPCG01W1/14
Inventor 顾慰祖刘九夫廖爱民张建云王妞郑朝玉李薛刚
Owner NANJING HYDRAULIC RES INST
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