Báo cáo lâm nghiệp: "Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE Spain" pot

... 10.1051/forest:2007070 Original article Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE Spain Lidia Quevedo,AnselmRodrigo * ,JosepMariaE spelta Unit of Ecology and ... resprouting ability of the non-dominant tree and shrub species of the Mediterranean Basin has not yet been experimentally t...

Ngày tải lên: 07/08/2014, 16:21

... growth rate of trees and hence influence the width of the tree- rings. For ring-porous species in general and European oak more specific, it has been demonstrated repeatedly that tree- ring width and cambial ... the cross-section of a tree stem near the base, generally measured at breast height. The BAI is then defined as the increase in basal area of a tree over a s...

Ngày tải lên: 08/08/2014, 00:22

Ngày tải lên: 07/08/2014, 16:20

... length and root tips Total root length, including length of both tap and lat- eral roots, doubled from time of transplanting in April to first sampling in June in untreated controls and in seedlings in ... gibberellins and indole-3-acetic acid in current- year shoots of Pinus sylvestris, Tree Physiol. 17 (1997) 715 721. [28] Wilson F.B., Compensatory growth in sho...

Ngày tải lên: 07/08/2014, 16:20

... Open grasslands and heathlands without tree colonization; (2) Grasslands in the process of being colonized (scattered pines); (3) Dense and young Scots pine stands; (4) Submature Scots pine stands ... grasslands and heathlands without tree colonization; (2) Grasslands in the process of being colonized (scattered pines); (3) Dense and young Scots pine stands; (4) Submature...

Ngày tải lên: 08/08/2014, 01:21

... of the machine are lim- ited and accrued rutting and mixing of mineral soil with litter mass by the track grouser of this machine type. However, the large ground contact area of this machine ... whereas in many forest areas, particularly in steep terrain with large trees and high precipitation rates, these machines are likely to remain the most common type of skid-...

Ngày tải lên: 07/08/2014, 03:22

... volume increment losses were assessed on the basis of standardized ring width and periodic annual increment in volume, respectively, in order to eliminate the effect of tree ageing and initial tree ... because of the continuous abundance of balsam fir stands [8, 24, 25]. Since fir-dominated stands are still abundant and are expected to remain so into the future, sustaine...

Ngày tải lên: 08/08/2014, 00:21

... bands linking vessels (Hymenolobium). Only Calophyllum and Swietenia had an apotracheal parenchyma, i.e. the first in the form of a few short to long bands, and the latter in marginal bands. All ... the original set in which the new parameters (principal components) were not correlated and closely represented the variability of the original set. Table V shows that five princip...

Ngày tải lên: 08/08/2014, 00:22

... Testing of wood; determination of density, 1976. [9] DIN 52183 Testing of wood; determination of moisture content, 1977. [10] DIN 52184 Testing of wood; determination of swelling and shrinkage, 1979. [11] ... irradiation develops linearly with increasing yellowness. This links yellowing directly with photooxidation of lignin [29]. New surface coat- ings contain lignin stabiliz...

Ngày tải lên: 08/08/2014, 00:22

... these 2 origins and could be used for introgression monitoring. Advice for preserving and using C. atlantica genetic resources and for reducing the degradation of these natural stands are proposed. Cupressus ... diversity of natural and introduced cypress stands in Morocco: consequences for management of genetic resources. For the purpose of managing Cupressus atlantica natu...

Ngày tải lên: 08/08/2014, 01:22