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MIL OSI Translation. Region: Russian Federation –

Source: Novosibirsk State University – Novosibirsk State University –

Employees Climate Center of Novosibirsk State University They are building a unified model of a natural ecosystem, in which they plan to reflect indicators of soil respiration, phytomass reserves, photosynthetic activity of dominant plant species, as well as illumination of forest layers.

The object of study was the Pirogovsky forest, in which experimental studies were carried out for the first time. One of the instruments that the Climate Center owns is a UAV – Geoscan 401, which is equipped with a LiDAR laser scanner and a Sony Alpha A6000 50 mm camera.

The NSU Climate Center was created as part of the federal program for the creation and development of a network of carbon polygons on the territory of the Russian Federation. The main task that the center’s employees solve is measuring and monitoring the flow of greenhouse gases: CO2 and CH4. To carry out research work, the center’s staff uses a wide range of modern laboratory and field equipment, including unmanned aerial vehicles (UAVs).

Master’s students Faculty of Geology and Geophysics of NSU and part-time laboratory assistants of the Climate Center Stepan Denisov and Dmitry Goryainov prepared the basis for building a model based on data obtained from a UAV using laser scanning. After processing the data for each tree in the study area, it was possible to determine the coordinates, height, crown diameter, crown area, and crown volume. There are a total of 18,557 trees in the experimental plot. Average indicators are height 20.53 m, crown diameter 3.6 m, crown area 16 sq. m, crown volume 104.6 cubic meters. m. Of 18,557 trees, only 0.7% reach a height of 30 meters or higher..

Thanks to the use of automatic counting of the number of trees in the study area, researchers had the opportunity to estimate the stock of phytomass, the amount of absorbed CO2 and the intensity of its absorption, based on data from photosynthesis and respiration of vegetation elements. They are confident that the development of a method for recognizing woody vegetation and determining species composition based on data obtained from UAVs is of interest not only from a scientific, but also from an applied point of view.

The Pirogovsky forest was chosen as a research object because of its uniqueness – within the Novosibirsk agglomeration it is the largest array of natural and relatively untouched Ob pine forests: there are practically no invasive plant species or artificial plantings, a natural, slightly disturbed ecosystem with a rich flora and fauna has been preserved . Therefore, the Pirogovsky forest is of scientific and educational interest: using its example, you can get an idea of the structure of unique Siberian ecosystems.

— The main task of the NSU Climate Center is to determine how effective natural forest ecosystems are, both natural and artificial, including planted forests, in terms of carbon sequestration. A forest is a complexly organized system that occupies a large volume of space and is divided into tiers: trees, shrubs, grasses and mosses. All its components work on one of the tasks – carbon absorption and storage. To understand exactly how this happens and in what volumes, it is important to have a good understanding of the spatial organization of the forest ecosystem and the degree of saturation of different layers with organic matter. It is important to know how many branches and leaves are located at a certain height, because this determines the amount of sunlight, and ultimately the efficiency of this photosynthetic system. Measuring the height of each tree in the forest is a very labor-intensive and time-consuming task, but it is greatly simplified with the use of an unmanned aerial vehicle and its software, which allows, when processing the image, to determine with high accuracy the height of each tree and the volume of its crown, which is what we did, — said the chief researcher of the NSU Climate Center, Doctor of Biological Sciences. Nikolai Lashchinsky.

After the snow melts, researchers will conduct ground verification of the area surveyed using an unmanned aerial vehicle to assess the accuracy and completeness of the data obtained by it. They will try to obtain information about each specific tree and about the structure of the forest plant community as a whole. This will allow you to imagine a model of this forest ecosystem with little time and financial investment. By using various functional characteristics, for example, the intensity of photosynthesis, scientists will be able to obtain a mathematical model of how the forest works to absorb and store CO2.

— A mathematical model of the functioning of a forest ecosystem will help us understand how effective a particular forest area is and to what extent it neutralizes emissions from enterprises and road transport into the atmosphere. In addition, using mathematical models, we will be able to conduct various experiments aimed at somehow trying to optimize or maximize carbon storage functions. It is quite difficult to conduct such studies in nature and the results are not always guaranteed. The mathematical model gives the researcher more space for all kinds of experiments and modifications without harm to nature.

A bird’s eye view of forest vegetation is very important to us. Such precise detail is not provided by either aerial photography or space photography, which do not have sufficient resolution for this. UAV images provide an opportunity to see the internal architecture of forest plantations, which is important for understanding the structure of the forest ecosystem. Thanks to this, we will be able to obtain data about animals living in different layers of the forest, their movement routes, shelters, wintering and nesting places, and much more. Based on this data, we will be able to calculate the optimal number of certain animals for certain areas of the forest or forest areas. Thus, we get a fairly powerful mechanism for managing the forest, monitoring it and understanding what processes occur in forest ecosystems. This knowledge is extremely important for preserving forests with all the richness of flora and fauna, as well as preventing negative impacts on them, explained Nikolai Lashchinsky.

Note; This information is raw content directly from the source of the information. This is exactly what the source states and does not reflect the position of MIL-OSI or its clients.

Please note; This information is raw content directly from the information source. It is accurate to what the source is stating and does not reflect the position of MIL-OSI or its clients.

EDITOR’S NOTE: This article is a translation. Apologies should the grammar and or sentence structure not be perfect.

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