3D cadastral systems are more complex than traditional cadastral systems and they require more complex technical solutions and innovative use of developing technologies. Regarding data integrity and data consistency, 3D cadastral data should be maintained by a Database Management System (DBMS). Furthermore, there are still challenges regarding visualization of 3D cadastral data. A prototype of the 3D cadastral system based on a NoSQL database and a JavaScript application for 3D visualization is designed and tested in order to investigate the possibilities of using new technical solutions. It is assumed that this approach, with further development, could be a good basis for the development of a modern 3D cadastral system. MongoDB database is used for storing data and Cesium JavaScript library is used for 3D visualization. The system uses an LADM (Land Administration Domain Model) based data model. Additionally, script languages, libraries, application programming interfaces (APIs), software and data formats are used for the system development. The case study is based on the real cadastral data. The underground object and building units located below and above the ground level are used to test the proposed data model and the system’s functionality. The proposed system needs further development in order to provide full support to a modern 3D cadastral system. However, it allows maintenance of 3D cadastral data and basic 3D visualization with the interactive approach.

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UVODUređenje zemljišne teritorije podrazumeva sistem prostorno-planskih, tehničkih, pravnih i ekonomskosocijalnih mera koje društvena zajednica preduzima za temeljno poboljšanje prirodnih, privrednih i ekoloških uslova zemljišne teritorije s ciljem obezbeđenja kvalitetnijih uslova života i rada i zaštite životne sredine Komasacija zemljišta se sprovodi sa ciljem ukrupnjavanja poseda i stvaranja većih poljoprivrednih parcela pravilnijeg oblika sa željom postizanja veće produktivnosti kod poljoprivredne proizvodnje. Projekti se realizuju na odabranim područjima koja obuhvataju jednu ili više katastarskih opština ili njihovih delova.Geodetski inženjeri imaju glavnu ulogu u sprovođenju projekata komasacije zemljišta i koordiniranju svim projektnim aktivnostima. Najvažnije aktivnosti su sakupljanje informacija o vlasnicima zemljišta, premeru i procene vrednosti zemljišta kao i pregovaranje i komunikacija tokom procesa realizacije sa vlasnicima i korisnicima zemljišta i ostalim učesnicima. U proseku, period sprovođenja projekata komasacije traje od 2 do 3 godine, a najvećih projekata maksimalno 5 godina (iz nekoliko faza po par godina), što zavisi od broja uključenih vlasnika zemljišta, postojećih imovinsko pravnih odnosa na zemljištu, stepenu usitnjenosti zemljišta i spremnosti vlasnika zemljišta da budu kooperativni i učestvuju u konstruktivnim pregovorima [8].Tradicionalni postupci su vremenom doživeli znatna poboljšanja, obuhvatajući sve više aktivnosti koje se odnose na kompletno uređenje i razvoj ruralnog prostora. Tokom vremena, kao rezultat stečenih iskustava i tehnološkog napretka, razvili su se različiti pristupi u ukrupnjavanju poljoprivrednog zemljišta. Isto tako, menjali su se i ciljevi komasacije. Sadašnji postupci komasacije poljoprivrednog zemljišta važan su instrument ruralnog razvoja, te imaju znatno širi fokus od same poljoprivredne proizvodnje [7].Okretanje razvoju sela omogućava ravnomerniji razvoj državne teritorije i smanjuje migracije stanovništva iz sela u gradove. Pored unapređenja poljoprivredne proizvodnje pokreću se i druge delatnosti kao što su usluge, turizam, razvoj malih i srednjih proizvodnih preduzeća uz angažovanje neiskorišćenih potencijala seoske teritorije.Komasacija sada postaje i mera za sprovođenje jedne šire politike, posebno u balansiranju suprotnih interesa poljoprivrede i zaštite životne sredine i obezbeđenje zemljišta za planirane potrebe urbanog razvoja seoskih i gradskih naselja, izgradnju infrastrukture, industrijskih i objekata turizma i rekreacije. Komasacija treba da stvori i uslove za trgovinu i zakup

Land consolidation represents the most comprehensive proven instrument of development of agriculture and rural regions. Land consolidation in Serbia has a long tradition, over 1,700,000 hectares of agricultural land has been consolidated in the past. However, there are still large areas of agricultural land, especially in undeveloped parts of Serbia that needs to be consolidated. Since the funds are limited and land consolidation cannot be carried out in all areas in short period of time, there is a need for finding the right mechanisms to choose the areas and municipalities in which the land consolidation will produce the most results and bring the most benefits. This research defines the main steps in process of selection of municipalities for land consolidation. It also defines the selection criteria which were regarded in two major categories. This research was implemented in project "Rural Development: Effective Land Management" financed by European Union and German Federal Ministry for Economic Cooperation and Development. This project served as case study for implementation of this research.

Land readjustment (LR) is increasingly applied as a tool of urban policy implementation in many countries of the world. In Serbia, LR is a new tool that is being introduced into the legal system and into planning practice, from which a significant contribution to the urban development of the country is expected. Countries have different models of LR, which are adjusted to the particular conditions specific for that society. This is to be expected, having in mind the specificity of each country. This paper presents the development of land readjustment models which are adjusted to Serbia, but could also be used in the countries of South-East Europe, considering that the predominant conditions are similar. The most important item in this process is defining the key elements which determine the nature of the model: the existence and appropriateness of the urban plan and the distribution of benefits from increased land value. The paper also presents a case study of LR implementation on the basis of defined models, after which an analysis of the outcomes is presented. It is concluded that by applying the LR models presented, numerous significant issues that occurred in the past can be solved.