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A Long Time Sequence Field Forest Leaf Area Index Measuring Instrument and Its Measurement Method

A leaf area index and long-time series technology, which is applied in the field of forest ecological monitoring, can solve problems such as the inability to effectively obtain long-term series data, and achieve accurate and reliable measurement results, strong stability, and high cost

Active Publication Date: 2017-01-18
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing leaf area direct measurement method and indirect measurement method cannot effectively obtain long-term data

Method used

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  • A Long Time Sequence Field Forest Leaf Area Index Measuring Instrument and Its Measurement Method
  • A Long Time Sequence Field Forest Leaf Area Index Measuring Instrument and Its Measurement Method
  • A Long Time Sequence Field Forest Leaf Area Index Measuring Instrument and Its Measurement Method

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Embodiment Construction

[0027] The specific embodiments of the present invention will be described with reference to the accompanying drawings. The long-term sequence field forest leaf area index measuring instrument of this embodiment includes a waterproof housing. The waterproof housing 1 includes a measuring part, a power supply part and a time control part. The measurement part includes a single-chip microcomputer 9, a horizontal rotating steering gear 12, a digital light intensity sensor, a vertical rotating steering gear 11, a clock module 8, an SD card 7 and a display screen 6. The vertical rotating steering gear 11 is installed on the horizontal rotating steering gear. The turntable of the engine 12 rotates horizontally with the horizontal rotating steering gear 12. The digital light intensity sensor is installed on the vertical rotating steering gear 11 and rotates with the vertical rotating steering gear 11. The time control part includes a time control switch 15, The output ports of the sing...

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Abstract

The invention relates to an instrument and method for measuring leaf areas, and provides an instrument and method for measuring a long-time-series field forest leaf area index (LAI). The instrument and method are used for solving the problem that an existing leaf area measuring method can not effectively obtain long-time-series data. A vertical rotation steering engine is arranged on a rotary table of a horizontal rotation steering engine and horizontally rotates along with the horizontal rotation steering engine, and a digital light intensity sensor is arranged on the vertical rotation steering engine; a time control part comprises a time control switch, the output port of a single chip microcomputer is connected with the horizontal rotation steering engine, the vertical rotation steering engine, an SD card and a display screen, the output end of the digital light intensity sensor is connected with the SDA port of the single chip microcomputer through a serial line, the output end of a clock module is connected with the SCL port of the single chip microcomputer through a serial line, and the output end of a power supply part is connected with the single chip microcomputer of a measuring part through the time control switch. The instrument is simple in structure, reasonable in design, and suitable for measuring the long-time-series field forest LAI.

Description

Technical field [0001] The invention relates to a leaf area measuring instrument and a measuring method thereof, in particular to a long-time sequence field forest leaf area index measuring instrument and a measuring method, and belongs to the technical field of forest ecological monitoring. Background technique [0002] Leaf area index (LAI) is half of the total leaf surface area per unit ground surface area, and it is one of the important structural parameters of the forest canopy. Accurately obtaining leaf area index is a research hotspot in recent years. Leaves are important vegetative organs of plants. Most photosynthesis is completed on the leaves. At the same time, transpiration is also realized through the stomata of the leaves. It is the main organ for the exchange of material and energy between the plant and the outside world. Therefore, the leaf area index is a measure of the plant. An important parameter for carbon sequestration capacity and transpiration. The leaf ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/28
Inventor 范文义温一博常颖李明泽于宏洲张智超
Owner NORTHEAST FORESTRY UNIVERSITY
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