Báo cáo lâm nghiệp:"Nutrition and growth in newly established plantations of Eucalyptus globulus in northwestern Spain" doc

... minerals (mainly mica and kaolinite), and a low eCEC. The texture is loamy and, in the case of soils developed on granite, sandy. 2.3. Sampling and analysis of soils and plants In each of the plantations, ... 509–517 © INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003044 Original article Nutrition and growth in newly established plantations of Eucalyptus g...

Ngày tải lên: 08/08/2014, 01:21

... Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. USDA Handbook 436, US Government Printing Office, Washington, DC, USA Stocking MA, Albaladejo ... terracing with USR being the most effective treatment in improving the survival and growth of the pines. The addition of forest soil significantly enhanced...

Ngày tải lên: 08/08/2014, 18:21

... pine seedlings which were in the advanced phase of height growth at spring planting. Height in- crement of containerized Scots pine seedlings from spring outplanting with the application of ... the seedling types of pine was almost 20% in autumn and even 42% in spring outplanting. However, es- pecially the comparison of bareroot and container- ized spruce and pine...

Ngày tải lên: 07/08/2014, 10:21

... of A. mangium see- dlings with damaged and intact top shoots, in: Ministry of Forestry of Indonesia (Ed.), Trials established in 1986–1987 in the Mecha- nized Nursery and Plantation Project in ... National Insti- tute of Education of Singapore and the French Ministry of Foreign Affairs. Thanks are also expressed to Olivier Crassard and Patrick Durand respectively...

Ngày tải lên: 08/08/2014, 00:22

... that 96.2% of standards and 37.9% of shoots are involved in the defect and only 51 % of stools present shoots with ring shake. The distribution of ring shake in the stems ... following Ward’s method. The choice of the discriminating parameters was made taking initially into consideration all the parameters and eliminating, by a proce...

Ngày tải lên: 08/08/2014, 18:21

... temperature of 27°C (Table II). In 4 of the 5 species, the net photosynthetic optimum was also at 27°C, but species differed in whether the main determinant of their increased growth ... warmth was maintained Photosynthesis and growth of present New Zealand forest trees relate to ancient climates B.J. Hawkins G.B. Sweet* School of Forest...

Ngày tải lên: 09/08/2014, 04:20

... blunt cutting edge does not cut the material in the process of chip cutting. It is mainly in the plain passing the lowest point of the cutting edge but it is also in the plain lying a little ... back and leading surfaces against the machined surface. Defining the value of individual parts of force F is quite difficult and depends on many aspects. e part of force F in...

Ngày tải lên: 07/08/2014, 03:22

... (1995), and in France by P et al. (2008). e paper presents the results of the nutrient bal- ance and content of the stress elements in the cur- rent year needles of fir taken in 2006 and 2007 in ... Forest, in the mature stands growing predominantly above 1,100 m a.s.l. MATERIAL AND METHODS Samples of silver fir needles were taken in the Bohemian Forest duri...

Ngày tải lên: 07/08/2014, 10:21

... the self-thinning limit (figure 3). The influence of site quality on the intercept of the self-thinning line was examined by adding the site index to the model as an independent variable. The following ... Modeling survival of loblolly pine trees in thinned and unthinned plantations, Can. J. For. Res. 22 (1992) 1878–1882. [3] Bredenkamp B.V., Burkhart H.E., An examination of spac...

Ngày tải lên: 08/08/2014, 01:21

... called growth index rather than site index. Figure 4. Measured and predicted 10-year changes in the stand basal area (G) of the living pines in the inventory plots using the initial ver- sion of ... the stand growth index, pid5 i is measured past underbark radial growth (mm in 5 years) of tree i in the plot, is predicted past radial growth (mm in 5 years) of tree...

Ngày tải lên: 08/08/2014, 01:21