Báo cáo lâm nghiệp: "Exploring research issues in selected forest journals 1979–2008" ppsx

... that interdisciplinarity with forest( ry) research is indeed still weak. 4.2. Winners In contrast to the well-balanced distribution of the years (16 yinQ1andQ2vs.14yinQ3andQ4inFig.1), the 100 win- ners ... representative of changes in forest( ry) research issues or approaches. 4.1. Losers Losers can be interpreted as indicators of decreasing rel- evance of research issues. One...

Ngày tải lên: 07/08/2014, 16:21

... equa- tions for individual holm oak were devel- oped in Spain [6, 7] and in Italy [4, 5]. A

Ngày tải lên: 09/08/2014, 04:20

... sets In 1995, the Saxon Forest Research Institute in Graupa, Germany, initiated a large international provenance test in co-operation with the For- estry and Game Management Research Institute in ... every individual tree. e two provenance trials included in this study were estab- lished in spring 1995 using three-year-old plantings. Norway spruce provenances from Germa...

Ngày tải lên: 07/08/2014, 03:22

... associations of Pinus ko- raiensis and Tilia amurensis in broad-leaved Korean pine mixed forest in Changbai Mountain. Chinese Journal of Applied Ecology, 18: 1681–1687. (In Chinese) Corresponding author: Dr. ... (2000): China’s Forest Policy for the 21 st Century. Science, 288: 2135–2136. Z G., S G. (2002): Logging restrictions in China: A turning point for forest sust...

Ngày tải lên: 07/08/2014, 03:22

... prevailing oak in the top layer and coppice in the bottom layer proved very interesting from an economic point of view, and the coppice-with-standards form remained in use in many floodplain forests ... abundance of oak in the floodplain forest at that period. Intensive grazing was common in the floodplain forest until around 1850, when it was officially abolished. In 1754...

Ngày tải lên: 07/08/2014, 03:22

... obtain objective data on the actual abundance of free-living animals in a certain area. Methods of direct counting are hardly utiliz- able in forest areas (B, P 1981). In our research, ... deter- mined in the Jelení hora hunting district in 2007 and 2008 using the FSC method, viz 24 ± 23 individuals·km –2 (95% CI) and the CPM method, viz 105 ± 88 individuals·km –2...

Ngày tải lên: 07/08/2014, 10:21

... the main reason for initiating activity concerning this issue. A report known as COST 341 was established that presents informa- Evaluation of changes in the landscape management and its in uence ... 1988 and 2007. Issues evaluated include especially direct occupation of biotopes and agricultural lands due to constructing industrial areas in the motorway’s vicinity, changes in a...

Ngày tải lên: 07/08/2014, 10:21

... yellowing of leaves in selected forest trees in Slovakia. Nauka za Gorata – Forest Science, 43: 29–36. SCHIEBER B., 2006b. Spring phenology of European beech (Fagus sylvatica L.) in submountain ... is to analyze variabil- ity in the onset of selected vegetative phenological phases in four deciduous forest tree species in a submountain beech forest stand during the...

Ngày tải lên: 07/08/2014, 10:21

... clones R. P, J. M, V. N National Forest Centre – Forest Research Institute in Zvolen, Zvolen, Slovakia ABSTRACT: e results obtained in research on the quality of raw timber by means ... intended mainly for the pulp industry and class D1 includes fuel wood. e volume of larger decay or cavity, mainly in lower parts of stems, was included in waste. In 2007 th...

Ngày tải lên: 07/08/2014, 10:21

... dragging out and burning the cut material. Selective individual and scattered scrub clearing with PS Individual selection and scrub clearing using PS consists in the selective disposal of individual ... reflected in an increase in the existing normative tariff by 10–20% per unit amount of cleared scrub against the full-area scrub clearing. So the total cost of the selective indi...

Ngày tải lên: 07/08/2014, 10:21