Šiaurės Lietuvos karstinis regionas – vienas iš labiausiai komplikuotų ir probleminių regionų. Dėl gamtinių ypatybių jame ypač sunkiai suderinami ekologiniai, ekonominiai ir socialiniai teritoriniai interesai. Tai lemia gilėjančius kraštotvarkinius konfliktus šioje teritorijoje. Problematiškiausia yra ta karstinio regiono dalis, kurioje tankiausias paviršinių karstinių darinių tinklas (Biržų, Pasvalio rajonai). Tai aktyvaus karsto zona, skirstoma pagal paviršinių karstinių darinių tankį bei jų atsiradimo intensyvumą. Tokį teritorijos suskirstymą lėmė ne proceso intensyvumas, bet problematiškas ūkinis panaudojimas. Šiaurės Lietuvos karstiniame regione per trumpą laiką atsiranda vis naujų reljefo formų, būna sunku ūkininkauti, tenka imtis specialių gamtosaugos priemonių, kurios skatina geriau pažinti karstinio reljefo raidos ypatumus. Šio darbo tikslas – išryškinti žemės naudojimo tendencijas Šiaurės Lietuvos karstiniame regione bei numatyti žemės ūkio plėtros, žemės naudojimo perspektyvas, atsižvelgiant į gamtinius ypatumus. Darbe analizuojami žemės ūkio paskirties žemės naudotojai, jų žemėnaudos dydis, siekiant numatyti žemės ūkio plėtros, žemės naudojimo perspektyvas. Išryškinti dirvožemio dangos savitumai, dirvų sukultūrinimas ir derlingumas (pagal ekonominius balus) skirtingo sukarstėjimo teritorijose. Analizei pasirinkta: Biržų rajono Širvėnos, Parovėjos, Pabiržės seniūnijos ir Pasvalio rajono Krinčino, Pasvalio apylinkių, Pušaloto seniūnijos. Ūkininkų ūkių veiklai... [toliau žr. visą tekstą] / The sinkhole region of Northern Lithuania is one of the most complicated and problematical regions. It is difficult to co-ordinate ecological, economical and social interests in the region because of the peculiarities of land and nature in it. This causes many conflicts connected to organization of land exploitation in this region. The most problematic district of the sinkhole region is the one where the sinkhole derivatives are very dense (regions of Birzai and Pasvalys). It is the zone of an active sinkhole, which is allocated according to sinkholes density along the surface and the intensity of appearance of them. Such an allocation was not determined by the intensively of the process itself. It was determined by a problematic employment of the land in an agricultural way. An active perfunctonary sinkhole zones is called to be the most complicated territories for employment of nature and ecology. One needs to have an exceptional knowledge about the territories mentioned in a case to employ them for agricultural purposes. New forms of relief are to appear in a very short period of time in the sinkhole region of Northern Lithuania. This makes farming difficult, special safety measures need to be taken into consideration. This stimulates to find out more about the peculiarities of the evolution of sinkhole relief. In this paper there are the users of agricultural land and their land-tenure analyzed in case to preview the expansion of agriculture and the perspectives of... [to full text]

Summary The agrarian loads in basin of river Apaščia Karst Region area of North Lithuania is described in this article. Meth-ods and results of research were disputed shortly. The research was done 2003-2005. It is searching, what kind of farming land forms dominate in basin of river Apaščia and farming land forms influence to quality of river‘s water.

In master thesis researches to appreciate the agrarian strain to basin of river Tatula in the North karst region area of Lithuania. Object of the work: The basin of river Tatula, which is in the North karst region area of Lithuania. Aim of work: 1. gather up the water samples of river Tatula in autumn and spring; 2. to do ourselves the water quality researches of river Tatula; 3. to collect farmers in basin of river Tatula by questionnaires method; 4. to sum up the results and to dimension pollution’s sizes and sources; Methods of the work: The river samples were taken in 2003, 2004 autumn and 2004, 2005 spring. Water samples were taken up to the river, middle of the river and down to the river. Then water samples were transported to a laboratory, where would be setted: pH of the water, permanganate oxidation, BDS, ammonium azote concentration, phosphate phosphorus. Also were collected farmers who were farming in basin of Tatula by questionnaires method. Work out results of the waters quality shows that agrarian work effect partially influence pollution basin of river Tatula. When were done water‘s researches of river Tatula were setted ammonium azote concentration exceeded DLK and river water's quality was bad, compare with the other assay parameters water‘s quality is unbroken DLK. Keywords: The North karst region area of Lithuania, the basin of river, the agrarian strain, BDS7, pH, ammonium azote.

This thesis analysis the funding possibilities from structural funds for the development of water management in villages as well as different legal acts and international covenants whose regulations corresponds the project The Development of the System for Collecting Waste Water in Kirdoniai Village of Birzai District. It also analysis whether this project corresponds the SPD, its impact on the environment and the EU horizontal politics. In this thesis a lot of data are used, which were processed using ordinary statistical methods along with cost-benefit analysis recommended by the European Commission and the method proposed by the Environmental Project Management Agency used for financial and economic analysis. For data processing DAM and the MS Excel programmes were used. During the research the characteristics of Kirdoniai Village territory in Birzai district were analysed as well as the existing situation of drink water supply and the collection of waste water. It was also examined who could benefit from this project, what problems could this project solve. The formulation of the investment project was carried out. The research results were used by the Municipality Administration of Birzai district, which submitted the application according to the 1st priority “The development of social and economic infrastructure”, the 1.3 measure “The improvement of environment’s quality and the prevention of environmental damage” of activities’ group “The supply of drink water and... [to full text]