| Abstract [eng] |
The whole life depends on the plants ability to imbibe the heat of the sun’s rays and transform into energy of chemical substance. The plants use this energy for maintenance of there one vital development, for growth and for propagation. The herbivores feed on plants, they are the basis of any food web. It means, that the plants ability to imbibe the heat of the sun’s rays keep holding almost the whole life on the earth. The producers (plants) are the most important species, which maintains the quality of earth atmosphere. (Marinelli and oth., 2006). Work goal is to ascertain the spreading Isopyrum thalictroides, Lunaria redivida and allium ursinum on the area of Lyduvenai reservation and to appraise the handling principle of thinly growing plants. Work methods. During the work on fields the registration of thinly growing plants on the Lyduvenai reservation. Visual observation was used on shuttle method. The plants status was appraised at number of plants population, vitality, physical state and the growing conditions. Change of plants state was established according to the population, tendency to increase and decrease in population. The obtained data was analyzed and compared with the data of previous research. Work results. During the research was ascertained the condition of all three investigative plants Isopyrum thalictroides, Lunaria redivida and allium ursinum. The condition in comparison with previous research has not become worse, the abundance has changed not a lot different because of meteorological conditions. Also was ascertained, that the state of the reservation ditches and slopes is stable. The reasons are the growing of ripe wood, regulated hydrological regime, not intensive economic activity. |
