Báo cáo lâm nghiệp: "Analysis of the accuracy of GPS Trimble Juno ST measurement in the conditions of forest canopy" pot

... Brno, in the vicinity of the Brno Dam, and the second area (area B) was situated northeast of Brno, on the southern border of the for- est ground belonging to the Křtiny Training Forest Enterprise ... for testing the aforementioned GPS JUNO ST, as the accuracy quoted by the manufacturer is 1 to 5 m after post-process correction. Table 1. List of testi...

Ngày tải lên: 07/08/2014, 10:21

... characteristics of Czech forestry Primary indicators of forest condition that in a way predict the forestry size and the intensity of manage- ment measures are: forest coverage and development of forest ... m 3 /ha (according to Report on the Condition of Forests and Forestry in the Czech Republic, 2004). Timber felling In the whole post-war period, annual ti...

Ngày tải lên: 07/08/2014, 03:22

... using the data on the forest stand status obtained from the renewal of forest management plans. Data on the area of about 1 / 10 of Slovak forests are updated every year in this way. For the ... country. In the Slovakia considerable attention has been paid to the issues of wood production and regulation of its felling. Permanent forest monitoring, mainly...

Ngày tải lên: 07/08/2014, 03:22

... accumulated in snowpack flows out of the forest. In scientific literature attention is paid to the problem of the water regime of forest stands in win- ter seasons including snow measurements ... beech stands in the winter season 2005/2006 nor in the following two winters in the period of snow accu- mulation. Snowpack investigation and calculation of dai...

Ngày tải lên: 07/08/2014, 04:20

... establishment of collecting place), c 2 – costs of the establishment of one collector inside the collecting place. ese input values were unknown, and in the first phase, they were only estimated. ... use of GPS and digital maps by Polish State Forests in fire protection and in pest control. In: G W. (ed.): GIS and Databases in the Forest Protection in...

Ngày tải lên: 07/08/2014, 10:21

... regeneration of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) in forest stands of Hůrky Training Forest District, Higher Forestry School and Secondary Forestry School in Písek. Journal of Forest ... fir grows in our forests on the area of 4,808.5 ha, that is about 0.2% of forest land of the Czech Republic. Forest stands of the first four age classes...

Ngày tải lên: 07/08/2014, 03:22

... INTRODUCTION Since the beginnings of silviculture in the 18th century, its main purpose has been the sustainable management of forests [20], which in turn means to kept the forest ecosystem stable in ... the dominant strata and the site index within the for- est area can be seen in Figure 4. The classification of the forest area in function of the stan...

Ngày tải lên: 07/08/2014, 16:20

... among the first published for Pinus pinaster Ait. Further studies and an increased sampling will allow the gathering of more comprehensive information to be used as a tool for optimising the industrial ... Knots in Pinus pinaster Ait. 143 In summary, the reconstruction of the maritime pine stems based on visual scanning as made in this study allowed to obtain knowledge abo...

Ngày tải lên: 08/08/2014, 01:21

... (1991) [7] in oleoresin of P. pinea; the last seven acids in wood and bark by Hafizoglu (1989) [5], and the first six, in soil of a P. pinea forest and in plant material from this Pinus species ... of terpene analysis in forest genetics, New Forest 6 (1992) 159–178. [7] Lange W., Weiβmann G., Studies on the gum oleoresins of Pinus resinosa Ait and Pinus pinea L.,...

Ngày tải lên: 09/08/2014, 04:20

... disease of unknown cause in the recent past, and phenotypic characteristics such as stem form and branching habit are often inferior in plantations. The origin of D. sissoo plantations in Nepal ... such as the establishment of provenance resource stands in widely isolated regions, possibly out of the country. Our results illustrate the utility of molecular methods...

Ngày tải lên: 08/08/2014, 01:22