Measuring device and method for measuring grassland primary productivity

Abstract

The invention discloses a grassland primary productivity determination apparatus and a determination method thereof. The apparatus comprises a multi-rotor unmanned plane and a measuring device, the measuring device comprises a balancing disc and a plurality of measuring rulers with certain weight, the upper ends of the measuring rulers are vertically connected to the unmanned plane through pull wires, the bottom ends of the measuring rulers penetrate through the balancing disk to make the balancing disk be horizontally fixed to the measuring rulers, the center of the balancing disk is provided with an annular reflective mirror, an angle of 45 DEG exists between the mirror surface of the reflective mirror and the disk surface of the balancing disk, and the reflective mirror vertically corresponds to a camera under the unmanned plane. The flexibility and simple operation characteristics of the unmanned plane are used, and the corresponding measuring device is matched, so grassland primary productivity monitoring is highly-efficiently and accurately realized; the problems of low efficiency, low determination precision and limited application range of traditional grassland primary productivity determination are solved; and the apparatus and the method can realize long-term, fixed-point and specific-environment monitoring, break the restriction of traditional determination methods, and are suitable for promoted application.

Description

technical field [0001] The invention belongs to the technical field of ecological measurement, and relates to a measuring device, in particular to a measuring device and a measuring method for grassland primary productivity. Background technique [0002] Grassland primary productivity is an important index to evaluate grassland production and ecological function. The traditional measurement methods of grassland primary productivity mainly include: sampling method (level mowing method), estimation method (visual measurement method / measurement grass stick) and remote sensing inversion method. After long-term practical operation, we found that the existing methods have disadvantages in the following aspects, which are specifically reflected as follows: [0003] 1. High input cost, low efficiency, poor timeliness and limited representativeness: the sampling process of the sample method requires a lot of labor, and the work progress is slow. Due to its destructive nature, the nu...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned technical problems, the present invention provides a measuring device and its measuring method for grassland primary productivity, which effectively overcomes the problems of low efficiency, low measurement accuracy, limited scope of application and high operating cost in the traditional grassland primary productivity measurement. The characteristics of man-machine flexibility and simple operation, together with corresponding measuring devices, realize efficient and accurate long-term monitoring of grassland primary productivity

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