National Repository of Grey Literature 2 records found  Search took 0.02 seconds. 
Monitoring zdravotního stavu douglasky tisolisté Pseudotsuga menziesii v oblasti Orlických hor
Tylš, Pavel
Douglas fir Pseudotsuga menziesii [Mirb.] Franco is a non-native species in the Czech Republic. This thesis should contribute to discussion about the advantages and disadvantages of using Douglas fir as a commercial tree species from the point of view of health condition. A component of the thesis is monitoring the health of Douglas fir in 15 stands on LS Rychnov nad Kněžnou, where Douglas fir grows in mixture stands with spruce Picea abies. A comparison is made between Douglas fir and spruce. Several originators of degradation of health condition were found in stands. No signs of deterioration in health condition were found in 40% of stands. The most frequent species was dark honey fungus Armillaria ostoyae and cooley spruce gall adelgid Gilletteella cooleyi. Rhabdocline needle cast Rhabdocline pseudotsugae was proven only in two stands. The Swiss needle cast Phaeocryptopus gaeumannii has not been proven at all.
Manual Debarking Methods in Mangrove Stands Metody manuálního odkorňování výřezů v porostech mangrove
Tylš, Pavel
Manual debarking of logs in Thai mangrove forest is being implemented for the purpose of charcoal production. In the local conditions, workers debark the harvested logs with homemade mallets made from mangrove wood. The thesis compares this local accustomed method with two other imported methods known in Europe, drawknife debarking and peeling spud debarking. Two basic criteria saying about the effectivity of debarking, i.e. time of debarking particular logs and the difficulty were investigated. The difficulty was investigated with measuring the pulse rate and blood saturation with oxygen of the worker during debarking works. Measurements took place in mangrove forest in Thailand and were realized with the help of Department of Forest Engineering, Faculty of Forestry from the Kasetsart University.

Interested in being notified about new results for this query?
Subscribe to the RSS feed.