The dissertation research solves an important scientific and practical problem of increasing the efficiency of determining the sanitary condition of arrays of trees by introducing methodological, mathematical, metrological-instrumental and hardware-software, which in general is an information-measuring system of remote monitoring. The general characteristics of the dissertation research, its relevance, correspondence to scientific topics are given; the scientific novelty and practical significance of the dissertation results are determined, as well as the purpose, tasks, subject and object of research are formulated. The analysis of: negative factors of influence is carried out in the work; existing methods for determining the sanitary condition of tree plantations; of the most common software and hardware for mathematical modeling of behavior and dynamics of plant ecosystems. The existing method has been improved and a new method for remote monitoring of the sanitary condition of trees plants has been developed. For this purpose, the methods of determining the pH and salinity of the soil were specified and improved and for the first time used to determine these indicators in the area of root nutrition of the tree; refined and improved express methods for determining sugar and pH and was used for the first time for rapid determination of quality indicators of tree’s sap (sugar content, hydrogen pH and viscosity). Mathematical regression models are constructed by the method of multifactor planning of the experiment, which describe the dependences of wood sap quality indicators on external climatic factors and the statistical characteristics of these models are calculated. For application in the decision support system of the information-measuring system of remote monitoring of the sanitary condition of treeі plants, a dynamic model has been developed, which allows to determine the sanitary condition of trees accurately (relative error did not exceed 4%). For the first time, a mathematical model was proposed, on the basis of which an algorithm for zoning trees plants by categories of their sanitary condition was developed, which allows for more accurate and informative monitoring of plants condition. The general algorithm of monitoring of a sanitary condition of trees plants on the basis of the developed experimental-methodical and mathematical maintenance is made. The design and technological sequence of manufacturing a microsensor for determining the quality of tree's sap (acidity, sugar content and viscosity), which meets the basic requirements of reliability, cheapness, simplicity and does not lead to physical damage to trees. The requirements to the design of the information-measuring system for monitoring the sanitary condition of trees plants are determined; the structural and functional schemes on the basis of which the model sample of such information-measuring system is created are made, and software for automation of the monitoring process was also developed, which allowed to reduce the operator's influence on the monitoring process and to implement remote monitoring and forecasting of the sanitary condition of trees plants. The results of experimental testing of the developed information-measuring monitoring system are given and these results are compared with the data of mathematical modeling and the results obtained by alternative research methods (for example, by the method of visual observation). Visual results of monitoring of the studied area (on the example of Sportivny Park, Cherkasy) are presented and the results of tree zoning by categories of sanitary condition are given. The results of calculation of accuracy, reliability (probability of receiving correct data by the control device) and speed of transmission / reception of information from measuring sensors by the control device for various investigated sites are given. Graphs of dependence of these parameters on change of position of the operator with the control device concerning sensors, and also on service life of measuring sensors and density of trees plants are received. The main provisions of the dissertation are introduced into the educational process of the Department of Instrumentation, Mechatronics and Computerized Technologies of Cherkasy State Technological University in the disciplines "Methods of improving the metrological characteristics of control devices and determining the composition of substances", "Technical means for studying the influence of climatic factors", "Intelligent measurement technologies", "Automated information and measuring systems".
