LTSER Trnava is located in the south-west Slovakia, in territory of one city (Trnava) and 44 rural municipalities with total area of 741.33 km2. Arable land dominate (65.13 %), followed by forests (17,78%), built-up area 7.84%, grassland (2.15%), gardens (1.83%), water bodies (1,38%), vineyards (0,81%), orchards (0.2%), and other plots (2.9%). The main part of the LTSER (central and southern parts) is located in the Danubian Lowland. Because of the best, most fertile soils and favourable climatic condition, it is intensively used for agriculture, especially as arable land. In this part of LTSER is located the largest settlement – Trnava. It represents the administrative centre of the county and region with highest population, trade and industry. Hilly northwest part of the LTSER, located in the Little Carpathians Mts. belongs to the Malé Karpaty Protected Landscape Area. This is the only large protected area having vineyard character in Slovakia; vineyards forms transition belt between lowland arable land and forested hills/mountains. Several types of deciduous forests are developed – oak-hornbeam and beech forests are most common, in steeper sites are developed ravine forest dominated by ash and maple. The LTSER represents intensively used industrial and agricultural area with specific environmental problems (strong degree of contamination of environment, the degradation processes of agricultural land, etc.) and low degree of ecological stability. Use of the most productive soils for construction of industrial parks represents a significant environmental issue.