Declaration data of farming land and crop are analyzed in the article. Ukmergė district is chosen for the more detailed analysis. Statistical data of farmers and other land users are analyzed in the article; the declaration data of farming land and crop are analyzed and mathematical statistical dependence between the declared area and soil productivity index is determined. The results show that there are 2,506 registered farms in Ukmergė district and they manage the area of 18,430.07 hectares. The average parcel size amount to 7.35 ha. The number of farming persons in Ukmergė district as well as in Lithuania have considerably decreased during 7 years period. In 2014, the number of farming persons was by 38.12 percent smaller in Ukmergė district and by 41.24 percent in the whole territory of Lithuania compared to 2007. The comparison of the declaration data of 2011 with the data of 2014 shows that the declared area of farming land and crop in Ukmergė district has increased by 2.46 percent although the number of received applications has decreased by 22.2 percent. During the period of 2011– 2014 the majority of assessed applications were received in 2013, i.e., 99.04 percent of all applications received that year. It shows that the size of land parcels has increased. Cereal crops (oat, wheat, triticale, barley, rye, buckwheat and corn) composed the major part of the declared areas in Ukmergė district in 2013-2014 (48.84 percent of all declared crops in 2013 and 53.79 percent in 2014). The analysed agricultural holding “Egvila” during 2011–2014 period declared the area of approximately 272 hectares annually. This company grows white clover for seed, timothy for seed and cumin. Direct payments are received for all land areas. The analysis shows that farmers generally declared their own land. The analysis of the declared land distribution in Ukmergė district by land property right shows that 75 percent of the declared land are private and the remaining 25 percent are leased either from the state or from natural persons.

The article presents the Lithuanian forest land change in the period of more than a hundred years. The causes leading to forest land use change are analysed in the article. The beginning of forestry in Lithuania can be traced back to Sigismund Augustus times starting from 1557, when Wallach reform was launched. However, over time forest land and its use evolved for a variety of political, social and economic factors. In 1795 the state-owned forests in Lithuania amounted to 35% of the total area of forests; other forests were owned by landlords, churches and kulak farms. Later forests were cut down quite rapidly, many of them burned down, but reforestation work was insignificant. The smallest forest coverage during the analysed period was in 1945, just 16.5%. Forests were thinned out, wastelands and waterlogged areas dominated. Later, albeit with different variations, the forest coverage of Lithuania increased and today forest area accounts for more than 34% of the total area of the country, the majority of which are private forests. More detailed characteristics of forest land use and user trends as well as their causes are presented in the article. It also looks at the possible prospects.

The land consolidation project of the parts of Vilkaviškis district municipality, Pilviškiai and Klausučiai elderates, Alksnėnai and Sūdava cadastral area is analysed in the article, the main indicators of the project, the meaning of land consolidation, the need to improve the order of the execution and implementation of these activities are described in the article. The survey was carried out to examine the opinion of the participants of the project regarding the advantages of the proceeding and results of the project as well as some of its drawbacks.

Land cover objects are reflected in a set of georeferential data and are constantly changing. These changes can be accurately examined by computer and interactive information systems. One of the main advantages of computer information systems is the fact that their maps can be constantly improved and updated. The update of georeferential data was conducted in a selected area using the ArcGIS software. After the analysis of the Lithuanian land cover data, the area meeting the following criteria was selected: a diverse landscape, the abundance of different objects (built-up areas, forests, bodies of water), an adjacent city and good access to major metropolitan areas. The article presents the updated georeferential data and tracks changes in the updated data of built-up areas, areas overgrown with trees and shrubs, dams, swimming pools, lakes, ponds and roads in the selected area within the period from 2008 to 2015. The results revealed that changes occurred in all analysed layers. It proves that land cover objects are constantly changing. The greatest change was observed in the data of built-up areas. In comparison with 2008, in 2015 even 41% of built-up areas was changed (i.e. the old boundaries were revised, new and defunct built-up areas were discovered), 125 new areas have overgrown with trees and bushes and 46 changes were observed in ponds and pools.

In order to preserve protected areas and to reduce their devastation, it is important to know the most common violations of these areas. The created map will provide the information about areas where the damage occurs most often. The Nemunas Loops Regional Park was selected for the research, the main aim of which was to identify the most common violations and the most problematic areas. The objectives of this research were to carry out a detailed analysis of violations in the Nemunas Loops Regional Park and protected areas for 2007- 2014 period of time and to create a dot distribution map of these violations. The main tasks were the following: 1) to review the aim of the Nemunas Loops Regional Park establishment, prohibited and promotional activities, 2) to carry out the classification of violations in these areas during 2007-2013 according to the Code of Administrative Offences of the Republic of Lithuania, 3) to group the violations of 2007-2013 according to the timing and to create a dot distribution map in order to provide its application possibilities. The study led to the following conclusions: most violations were made contrary to the requirements of the protected areas (Clause 76). For instance, arbitrary constructed mobile homes, environmental pollution, violations of visiting regime in the nature reservation, water protection requirements (Clause 55), parking a car in the protected area of the water reservoir, agricultural land, storing agricultural equipment which is not used etc. The map highlights the most problematic areas where violations occur every year. These are: Punios Šilas Strict Nature Reserve and the areas around it, Pociūnai and Balbieriškis towns, Birštonas. In 2014 the form of reports was changed and it was not possible to analyse the violations in detail. It was a negative factor for this research because no accurate violations and areas could be recorded. For this reason the map was not created. 230 various violations happened in the Nemunas Loops Regional Park during the period of 2007-2014. The created map can be used as an additional measure for prevention of violations.

Under the conditions of a global reduction in forest areas and climate change, it is important to preserve as many tree-covered areas as possible and understand change trends. The article purpose – aims at identifying forest area change trends of 19th –20th c. in the current forest land of the eldership Raudonė. In the research, historical topographic maps compiled during different periods, and 2019 data from the forest registry are used. The research method of a comparative analysis is employed. The change in forest areas was analysed, and forest areas that remained unchanged for 200 years were identified. The comparison of current forest areas reflected in the cadastral data and forest areas of the considered period allowed identifying the tendency of assigning land the purpose of forest land. During the research, the period with largest forest areas was determined to be the 19th c., and with the smallest – 1st half of the 20th c. During the Soviet period, forests areas were increasing, but did not achieve the same level as in the 19th c.

Nowadays, various types of geodetic measuring instruments are available in surveying. When conducting a survey of a terrain, surveyor must choose a survey method that is capable of providing high precision measurements. In the surveying process, it is possible to use the following measurement methods − tachymetric survey method, positioning method and remote sensing method. Each of the methods produces data formats that can be used further for volume calculations. The paper analyses the volume differences that are obtained when using various survey methods and volume calculation programs to obtain the surface model. The use of such a tool is important for useful mineral miners, so that surveyors make qualitative surveys and obtain accurate and reliable volumes. Useful minerals miners are required to report annually on their mining volume for a specified period. The useful minerals miners shall at all time keep records of the quantities of minerals actually extracted. Regardless of the type of accounting, topographic surveying and the calculation of volumes, if mineral is extracted in mineral deposits of national importance, more than 50 000 m**3, are required (Augstas detalizācijas topogrāfiskās…, 2012). High-quality and accurate topographic survey is needed to create the most realistic surface model appropriate to the terrain. It is defined that the difference between the volumes obtained from the recording of vehicle loads should not be more than 5% when comparing the result of the mineral extraction from topographic surveys (Derīgo izrakteņu ieguves…, 2012; Noteikumi par valsts…, 2018). Nowadays, various measurement methods can be used to obtain data from which a surface model can be generated, and this model can then be used for volume calculations. The surface model is a set of points where, in addition to plane coordinates (x and y), there is also altitude (z) known (Luukkonen, 2011). Each measurement method has its own different measuring instruments that can be used, each method has its own operating principles, on which the quality and accuracy of the obtained data depends.

Currently, the issues of the use and transfer of state land remain quite relevant in Lithuania. According to the data of January 1, 2019, more than 10 percent of the country's territory has not yet been formed and not authorized for use. A large proportion of unauthorized state land is located in major cities in the country. Only a few municipalities in Lithuania have detailed state land use planning. One of them is Panevėžys City Municipality, where, with the help of EU funds, detailed and special plans have been prepared for almost all state land and the municipality is actively looking for ways to encourage residents to become more actively involved in the process of land ownership or use. Detailed territorial planning documents for this municipality were prepared in three stages. Territories near public buildings, apartment buildings, former problem areas were planned. These plans are important for the development and renovation of engineering infrastructure, urban green spaces, management of residential areas, well-being of the population, and so on. Territorial planning documents are an important tool for the sustainable development of territories. The recent adjustment of the detailed plans is based on the principle of continuity. Effective real property management creates good conditions for investors, improvement of infrastructure and living conditions, and replenishment of municipal budget and so on.

Analysis of the condition of the Agila Dune is presented in this Article. The analysis is based on data collected during accurate geodetic measurements using LIDAR technology. The current state of the Agila Dune was compared to the data of the previous year's LIDAR points in order to ensure the reliability and value of the research. In the course of the study, eleven cross sections were compared by height differences with previous year‘s measurements. The condition of the Agila Dune was found to be the worst in three cross sections. First cross section‘s erosion measured at 13,98 meters, erosion in the fifth cross section – 9.90 meters, and erosion in the eighth cross section – 11.34 meters. The main reasons for the deterioration of the natural values of the Kursiu Nerija National Park are climate, wind, high visitor flows and the persistent failure to carry out comprehensive research. Therefore, in order to preserve these unique natural values, it is important to collect large-scale and high-precision data on the status of these values, to systematize, to analyse and take appropriate protective measures.

The media frequently refers to the concept of abandoned land. The reasons for its occurrence are discussed and the ways to diminish the problem are being searched for. Various sources of information were used for the research. They enabled the authors to identify the concept of abandoned lands. In addition, the situation of abandoned lands was analysed and causes of occurrence of such lands in one cadastral area of mid-Lithuania municipality were defined. According to the set of data, concerning abandoned lands (AŽ_DRLT), the data, provided in the mentioned data set and the data obtained during field testing were compared. The survey of the terrain was conducted in the early autumn of 2013 and repeated in the late spring of 2014. In order to find out why the land was abandoned, the surveyor of cadastral area was additionally interviewed. On the basis of the latest data of 2014, 123 spaces of abandoned lands, which occupy 59.74 ha, were found in Sujainai cadastral area. Having analysed the set of abandoned land data, it was identified that boundaries of 95 abandoned plots corresponded to the situation in the area, whereas boundaries of 28 areas should be corrected. Moreover, the abandoned areas that had not been marked were found while the land abandonment in the terrain was obvious. Although the amount of abandoned land is decreasing in both the area analysed and throughout Lithuania, the situation is not favourable. Having conducted the research, it was found that the main reasons for land abandonment in Sujainai cadastral area were as follows: poor fertility in non-productive lands (up to 32 points) and reclamation; no potential land consumers, purchasers or tenants of land areas of high productivity or it is complicated and expensive to pursue agricultural activity there.