Báo cáo lâm nghiệp: " Game damage to forest trees" ppsx

... predators produces changes in food chains. In forest stands influenced by human activities the reasonable game management and the regulation of game stock seems to be one of the main tools in forest ... consequently increase damage to nearby forest stands. – Insufficient and low-class hoofed game feeding in hard times. It is usually convenient to feed wildlife game acc...

Ngày tải lên: 07/08/2014, 04:20

... 64–72 JOURNAL OF FOREST SCIENCE, 54, 2008 (2): 64–72 Serious damage to trees and even their mortality occurred in this relatively small region of Jablunkov Pass. e health status of forest stands ... deposited in amounts similar to other polluted areas (ČHMÚ 2004). Chro- mium is not monitored in the monitoring network of ČHMÚ. Nevertheless, the results of biomonitoring – analys...

Ngày tải lên: 07/08/2014, 10:21

... inhabit forests and attempt to frighten those who venture there. To villagers the forest is a world of disorder before hu- man intervention. There are unusual happenings. “You walk in the forest. ... is mainly composed of words relating to agriculture, which do not describe the forest cover but soil and topography and second, those referring to the forest cover. Hence they...

Ngày tải lên: 07/08/2014, 03:22

... to view, map, measure, monitor and manage different activities and ap- plications. ese range from disaster assessment to urban planning and agricultural and forestry assess- ment and monitoring. ... správnosti klasifikácie; toto zlepšenie bolo v priemere o 10 %. Rovnako textúra prispela k lepšiemu rozlíšeniu niektorých spektrálne blízkych tried. Kľúčové slová : IKONOS; porastová zásoba...

Ngày tải lên: 07/08/2014, 03:22

... were cut to determine bending strength (6 specimens in longitudinal direction, 6 in cross direction), 6 to determine density, 6 to determine moisture and in Variant 2, 6 specimens to determine ... from 13.02 kg/m 2 to 14.41 kg/m 2 . CONCLUSION e aim of the paper was to determine properties of newly developed plywood materials combined with cork and fibreglass and to comp...

Ngày tải lên: 07/08/2014, 04:20

... permanent research plots In the territory of the Krkonoše Mts., 32 permanent research plots, designated PRP 1 to PRP 32, were es- tablished in the 5 th to 8 th forest altitudinal zone.  ese PRP ... After some time, six plots were added to reach the total number of 38 PRP: two plots in the timberline ecotone where research was aimed at natural vege- tative forest regeneration...

Ngày tải lên: 07/08/2014, 10:21

... defoliation classes was done. It is to note that damage to the tree layer of stands is generally understood as one element of a change in the forest ecosystem exposed to the im- pact of air pollution ... substantially infl uenced by damage caused by game, mainly by peeling; similarly like the spruce infestation with bark beetles, heavy damage to row- an stems by peeling mo...

Ngày tải lên: 07/08/2014, 10:21

... calibration. e disks are placed into the apparatus and the revolution counter is set to zero. e first test specimen is fixed into the holder. It is necessary to ensure that the test specimen ... side has to be worked in parallel with the specimen level (Fig. 2). e speci- men height has to correspond to requirements of a testing machine. If the testing machine does not allow...

Ngày tải lên: 07/08/2014, 10:21

... range [36]. 3.2. Forest dynamic In the subalpine forest, the number of stone pine individuals was similar to that of larch, but at the forestline and treeline, the number of stone pine decreased ... applied to the mean BAI chronology for the larch and the stone pine in order to highlight the low frequency signal. In order to avoid bias in the results, no indexation process was appl...

Ngày tải lên: 07/08/2014, 16:20

... individual reaction to potential damage and will contribute to the hierarchy of factors determining the emergence of forks. It is particularly impor- tant to transmit this information to forest managers ... level of the risk factor [10]. Finally, the logistic model, applied to the proba- bility of fork presence in plots P1 and P2 together, confirmed that damage was an explanatory...

Ngày tải lên: 07/08/2014, 16:20