|
|
Zhodnocení rycí aktivity prasete divokého v lesním prostředí
Růžičková, Eliška
On 970 ha of the monitored area of Hodonínská Dúbrava, which includes the Hodonínská Dúbrava National Natural Monument, a field survey was carried out in the form of monitoring of wild boar (Sus scrofa) rooting in order to clarify the extent of the wild boar's impact on the forest ecosystem. The subject of the investigation were fresh wild boar rootings, therefore the monitoring was carried conducted after winter, in the spring of 2022. It was necessary to follow established lines evenly distributed over the area and each recorded fresh rooting was documented in the GPS device as well as in a spreadsheet. A total of 2,298 recordings were collected with detailed information on the rooting area, layer or for example vegetation cover. These data were supplemented with LHP data from the Forests of the Czech Republic followed by their evaluation. Wild boar largely preferred medium-aged pine stands and mature oak stands and its activities mainly affected forest types 1S and 1O. In majority of cases, the wild boar rooted to a depth of 25 cm and preferred the soil subtype Cambysem arenaceous. Distance from roads and watercourses became a significant factor in the intensity of rooting.
|
|
|
Průběh kalamity a stav obnovy na revíru Polana, LS Jablunkov
Dyrčík, Vojtěch
This bachelor´s thesis deals with the calamity and subsequent restoration on the clearings of the district Polana LS Jablunkov, Lesy České republiky s.p. According to the forest management records, the course of the calamity and renewal in the years 2009–2020 was determined. The beginning of the calamity can be considered the year 2016, when the volume of harvested wood increased by twice the volume of the previous year and was still increasing. As the area of the clearings increased, the extent of renewal also increased. The most frequently used tree species for artificial regeneration was a beech (Fagus sylvatica L.). The beech was also the most widely used in natural rejuvenation. The state of natural regeneration was determined on three selected clearings. Selected clearings are located in the 4th, 5th and 6th forest vegetation stage. The following parameters were determined and evaluated on the network of inventory areas: height, type of plants, abundance and game nibble damage. The results show that the clearing in the 6th forest vegetation stage has a lower frequency of natural regeneration. The most represented tree species in natural regeneration was Norway spruce (Picea abies (L.) Karst.).
|
|
|
Methods of resource utilization equivalnecy method for assessing damages caused to human ecosystems
MUNDOKOVÁ, Mariana
The economic evaluation of costs for remediation of montane spruce forest attacked by bark beetle in the different stage of decline (plots with actually living mature trees, plots with dead tree stand, wood is remaining in the ecosystem, plots with damaged stands, which were clear-cut, ten model plots) was made in the National Nature Park Šumava (Modrava model area) using resource equivalency method. Microclimatic characteristics (temperature and humidity development) measured ba dataloggers and communities of epigeic beetles (pitfall traps) were used as environmental metrics. Results indicate that the natural remediation of declined forest is economically most profitable. The microclimatic characteristics of plots with dead tree stand are most similar to the active forest. The species diversity, activity of beetles and frequency of relic species and species indicating virginal forest is higher in plots with dead tree stands. Based on these data we can resulted that the natural remediation of montane spruce forest is the most acceptable way both from biological and economical view (regeneration of ecosystem services of montane spruce forest).
|
guest ::
