Non-forest vegetation is an important element of landscape structure, which has a great influence on the environment and man. The influence of vegetation on people can be direct or indirect. Indirectly, the vegetation improves attributes of the environment; it has comprehensive protection function by invigorating ecological stability of agricultural landscape. Directly, vegetation influences in positive way physical and mental health of people, and covers their economic and social requirements. It has many functions – recreational, hygienic, aesthetic, educational, research, etc. Different criteria are used for evaluation of vegetation: structure, health, authenticity, diversity, structural and biochemical characteristics.