Báo cáo lâm nghiệp: "Patterns of arbuscular- and ecto- mycorrhizal colonization of Eucalyptus dunnii in southern Brazil" potx

... 13 months following transplanting, in six plantations of Euca- lyptus dunnii Maiden, in the states of Santa Catarina and Paraná in southern Brazil. MATERIAL AND METHODS Site ... reviewing this manuscript. Original article Patterns of arbuscular- and ecto- mycorrhizal colonization of Eucalyptus dunnii in southern Brazil VL Oliveira VDB...

Ngày tải lên: 08/08/2014, 18:21

... lack of significant differences in kino among genotypes indicated that breeding is unlikely to be a useful means of re- ducing kino in plantation grown E. globulus.However,theas- sessment of kino induced ... Twenty-two percent of the half-discs split dur- ing pre-drying and a further 34% split during reconditioning and final-drying. The most notable feature of longitudinal vari...

Ngày tải lên: 07/08/2014, 16:21

... rooting depth and the length of horizontal roots – a Table 4. Vitality and mycorrhizal infection of fine roots Stand marking Month of sampling Mycorrhiza type Vitality of fine roots Mycorrhizal ... mounds Sycamore maple is one of the noble broadleaved species. Its representation in the existing species composition of forest stands being rather low, the study of t...

Ngày tải lên: 07/08/2014, 04:20

... significant increase in radial increment of Norway spruce in Austria in the period of 1961 to 1990, during which the length of growing season increased by 11 days associated with the increase in mean ... of mixed stands was insufficient and why it was not proved to satisfaction if tree species grew better in mixed stands or in pure stands. Recent findings show that the...

Ngày tải lên: 07/08/2014, 10:21

... processes explaining the time lag between drought and tree decline. There is obviously a large inter and intra-specific diversity in traits related to wa- ter use and coupling of water use and carbon ... process against sensitivity to drought. Significant improvement of our understanding of water re- lations of trees and forest stands, in both liquid and vapour phases, h...

Ngày tải lên: 07/08/2014, 16:20

... Seedlings of four populations each of Pinus pinaster, P. halepensis, P. canariensis and P. pinea were grown in controlled conditions to evaluate both inter- and intra-specific differences in response ... content of each individ- ual container reached 30% of field capacity (determined by weight). This watering level was maintained approximately constant until the end of the stre...

Ngày tải lên: 07/08/2014, 16:20

... m in the uneven-aged stand and 10 m in the mature even-aged stand. No relationship was found between CDI5 and LM indices in the plantation, as a result of thinning during the last 10 years in ... 399 pine trees in the uneven-aged stand, 510 (251 oaks and 259 pine trees) in the stand with oak understorey, 170 pine trees in the plantation, and 130 pine trees in the eve...

Ngày tải lên: 07/08/2014, 16:21

... to minimize the knotty core within stems, we need to maintain high stand densities to retard rapid crown expan- sion in young stands [25]. Accelerating natural pruning by main- taining high initial ... silvicultural treatments to intermediate thinnings using individual tree selection or row thinnings at various times (precise time in most cases could not be identified). Initial spacing o...

Ngày tải lên: 08/08/2014, 00:21

... higher in the west of the mountain crest than in the eastern side, leading at a value of –20 mm of WB deficit in June for 400 m of altitude in the west side of the crest and 550 m of altitude in ... However, they can grow in a wide range of mineral soil conditions (i.e. base saturation ratio and pH) in other mountainous areas and in particular in the inne...

Ngày tải lên: 08/08/2014, 00:22

... facilitate interpretation of multi-element interactions on seed- ling growth in response to increased fertilization. 3. RESULTS AND DISCUSSION 3.1. Seedling growth and nutrition Fertilization increased ... Effects of nitrogen ferti- lization on growth and ectomycorrhizal formation of red oak, For. Sci. 16 (1980) 529–536. [3] Bigras F.J., D’Aoust A., Hardening and dehardening...

Ngày tải lên: 08/08/2014, 00:22