Báo cáo lâm nghiệp: " Possibilities of using the portable falling weight deflectometer to measure the bearing capacity and compaction of forest soils" pptx

... discusses possibilities of using the portable falling weight deflectometer to measure the bearing capacity and compaction of forest soils. Within the study, measurements were made using manual ... available to root hairs and pores under 0.001 mm are not inhabitable even by micro - Possibilities of using the portable falling weight deflecto...

Ngày tải lên: 07/08/2014, 10:21

... planting into a forest stand was evident from the comparison of variant 2 and 3, i.e. rooted cuttings with different levels of nutrition in the nursery. In the majority of the years of observa- tion ... of examining the growth of rooted cuttings of beech after they were planted onto permanent forest sites. Data on the growth of rooted cuttings of beech...

Ngày tải lên: 07/08/2014, 10:21

... the United States. In: e Contribution of soil sci- ence to the development of and implementation of criteria and indicators of sustainable sorest management. No. 53, Soil Science Society of ... the litter mass in that area. Rut depths were measured in the same points of soil samples, a wooden rod was laid across the rut and the distance from the ground su...

Ngày tải lên: 07/08/2014, 03:22

... management practices. To assess the present and future options in management of forests, one has to be aware of the historical context. Shaped by the past, today’s forest stands offer mul- tiple ... sustainable forestry means the ability of landowners and forest enterprises to produce wood, to care for infrastructural services, and to provide environ- ment...

Ngày tải lên: 07/08/2014, 03:22

... Favre and Thiébaud [14], Richard [45] and Bartolomé [2] indicate the decline of the pine woodland surface in the middle of the bog and the concomitant centripetal spreading of the spruce woodland ... bog pine to Norway spruce stands 351 Table I. Vegetation tabular of the phytocoenotic relevés and their synusial relevés in the bog pine stand of phytocoenosis...

Ngày tải lên: 08/08/2014, 01:21

... referred to as the stands of substi- tute species (SSS). In the 1970s and 1980s, more than 30,000 ha of SSS were established in the region concerned. Since the coming into existence of the stands of ... Bohemian-Moravian Upland) and stands on the mechanically drained GFTs 7R and 8G. Results show that the growth of Norway spruce in the Krušné hory Mts. on...

Ngày tải lên: 07/08/2014, 03:22

... vector, and estimates of G and R, the BLUP proce- dure provides the best linear unbiased estimator (β ˆ ) of β and the best linear unbiased predictor (uˆ ) of u. e predictors are solutions to the ... respect to the distribution of Y) is equal to the expected value of the quantities being estimated, and third, they are the best in the sense of...

Ngày tải lên: 07/08/2014, 03:22

... water with the immersion objective, and the “deformed” image being that of the test pattern taken using the standard objective. The “deforma- tion” measured under these conditions on the pairs of images ... translation of the zoomed zone, with automatic updating of the two chains of reference points, etc. Indeed, some of the reference points chosen on the i...

Ngày tải lên: 07/08/2014, 16:20

... standard deviation of each of the three random effects (Tab. II) relative to their associated fixed effects provides a measure of their relative importance. Although one or sometimes two random ... relationship between the frequency and the frequency-specific variance of the reflectance: Exp (3) where is the variance of the reflectance of the jth foliage sample...

Ngày tải lên: 08/08/2014, 01:22

Ngày tải lên: 07/08/2014, 03:22