Open AccessMONITORING OF BASIC PARAMETERS OF SOIL FERTILITY USING GEOINFORMATION SYSTEMS
Author(s) -
Ilya G. Kostin,
Elena Malysheva
Publication year - 2020
Publication title -
vestnik kazanskogo gosudarstvennogo agrarnogo universiteta
Language(s) - English
Resource type - Journals
ISSN - 2073-0462
DOI - 10.12737/2073-0462-2020-96-101
Subject(s) - geographic information system , directory , context (archaeology) , environmental science , index (typography) , soil fertility , erosion , soil science , degree (music) , agricultural engineering , statistics , remote sensing , hydrology (agriculture) , mathematics , soil water , geography , computer science , geology , geotechnical engineering , engineering , paleontology , physics , archaeology , world wide web , acoustics , operating system
The studies were carried out with the aim of developing and implementing a module for determining the degree of cultivation and soil quality for geographic information systems using the example of “GIS Agroecologist Online”. The geoinformation system database includes a reference book of soil bonitet, depending on the type of soil, particle size distribution and degree of erosion. Based on this directory, the weighted average soil tolerance is calculated for the site. Soil subtypes that fall within the boundaries of the site can be viewed using the appropriate cartogram, as well as in the interface for viewing the soil erosion characteristics of the site, which displays information about the area of each soil subtype and its bonitet, the prevailing degree of erosion and particle size distribution. The calculation of the culture index is carried out in 2 stages according to the method of T.N. Kulakovskaya. First, a relative index is calculated for each indicator used to assess fertility, which is the ratio of the difference between the actual and minimum index to the difference between the optimal and minimum values of the indicator. At the second stage, the soil cultivation index is calculated, which is calculated as the average value of all relative indices. Based on the results of calculating fertility indicators for each site, a cartogram of the degree of cultivation is automatically built, which can be viewed in the context of the district, organization and department. On the cartogram, you can clearly see areas with each degree of cultivation. A high and medium soil cultivation index indicates a high level of fertility, and a very low and low indicates possible problems. Using this cartogram, it is easy to identify problem areas, if any. When monitoring the main indicators of soil fertility, this functionality is used for each cycle of agrochemical examination. This functionality can also be used in determining the cadastral value of the plot