Báo cáo lâm nghiệp: "Heartwood and sapwood variation in Eucalyptus globulus Labill. trees at the end of rotation for pulpwood production" potx

... possibilities of National Forest Inventory for the evaluation end, there comes the Inventory of Game Damage in the Smaller Territo- rial Units. CONCLUSION Results from National Forests Inventory ... during repeated investigation in comparison with the rest of the investigated territory. In the course of five years, in relation to the original po...

Ngày tải lên: 07/08/2014, 03:22

... p. Nutrient amounts in Quercus robur L. stands 559 Table I. General characteristics of the four Quercus robur stands selected for the study. Location Parent Slope Size Altitude dg Stocking G ... C and nutrients in mature oak forests in NW Spain. Assessment of the C and nutrient distribution in the plant-soil system is required for evaluation of future strate...

Ngày tải lên: 07/08/2014, 16:20

... 4 ◦ C above nor- mal in a smaller region, mainly in the South-West, from East- ern Spain to Southern Germany, including most of continen- tal Italy, Sardinia, Corsica, Switzerland, and most of France. August ... than June and August, except in Swe- den, Finland and Norway. On most of the continent, both min- imum and maximum air temperature were between 1 and 3 ◦ C above nor...

Ngày tải lên: 07/08/2014, 16:20

... at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007045 Original article Heartwood and sapwood variation in Eucalyptus globulus Labill. trees at the end of rotation for ... 29]. The initiation and rate of transformation of sapwood into heartwood are explained by several theories, namely that it is the amount of sapwood, e.g...

Ngày tải lên: 07/08/2014, 16:21

... www.afs-journal.org DOI: 10.1051/forest:2007057 Original article Fingerprinting and genetic variability in cork oak (Quercus suber L.) elite trees using ISSR and SSR markers Aimara L ´  -A a , María Ángeles ... of SSR and ISSR markers to establish the DNA-fingerprinting of each tree could be focused to select clonal lines of commercial interest....

Ngày tải lên: 07/08/2014, 16:21

... assessment of frost damage in upper crown leaves (sun leaves) and inner crown leaves (shade leaves) during warm and cold seasons in Laurus azorica, Persea indica and Myrica faya. Tem- perature of incipient ... freezing temperatures showed an intraspecific variation between leaves exposed in the upper crown (sun leaves) and in the lower and inner parts (sha...

Ngày tải lên: 08/08/2014, 00:22

... length to the depth of the container and preventing the development of re- placement taproots. The confining of lateral roots in the con- tainer and their downward growth lead to the generation of ... prevent root spi- ralling, and holes in the base facilitate drainage and encourage air pruning of roots. Continual air pruning induces a limita- tion to...

Ngày tải lên: 08/08/2014, 00:22

... Ait.) using nuclear SSR markers Santiago C. González-Martínez a, b , Sophie Gerber c , Mar a- Teresa Cervera d , José-Miguel Martínez-Zapater d , Ricardo Al a a and Luis Gil b * a Unidad de ... 115 Ann. For. Sci. 60 (2003) 115121 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003003 Original article Selfing and sibship structure in a two-cohort stand...

Ngày tải lên: 08/08/2014, 01:21

... freeze- and summer drought- induced xylem embolism: an ecological interpretation. Plant Cell Environ 16, 511-519 Milburn JA (1973) Cavitation in Ricinus by acoustic detection: induction ... to dysfunction because any break in the column in a conduit drains the con- duit of water and necessarily disrupts fur- ther water flow. A break in the...

Ngày tải lên: 08/08/2014, 18:21

... soil drought on the rate of CO 2 assimilation and the amount of soluble and insoluble carbo- hydrates in leaves of 4-year-old saplings of Q petraea. The aim of these experiments was ... hexose Short note Starch and soluble carbohydrates in leaves of water-stressed oak saplings D Épron E Dreyer Écophysiologie forestière, Centre de N...

Ngày tải lên: 08/08/2014, 18:21

... drainage does. More- over, the vegetation shows great depen- dence on the rains of the dry season, but Original article Water and bioelement fluxes in four Quercus pyrenaica ... rain intensity, slight slopes, high infiltration and absence of impermeable layers near the soil surface. Drainage Drainage (D) increased with rainfall (figs 1 and...

Ngày tải lên: 08/08/2014, 18:21

... Latitudinal and altitudinal variations of bud burst in western populations of sessile oak (Quer- cus petraea (Matt) Liebl) are examined. The phenology of bud burst in 50 populations ... Original article Latitudinal and altitudinal variation of bud burst in western populations of sessile oak (Quercus petraea (Matt) Liebl) A ....

Ngày tải lên: 08/08/2014, 18:21

... elements (N, K, Mg and espe- cially P), and high concentrations of Ca, Fe Original article Litterfall and mineral return in two cork-oak forests in northeast spain A Caritat 1 G ... 1996) Summary - Seasonal trends in littertall and potential mineral return were studied in two cork-oak forest sites in the northeastern Iberian pen...

Ngày tải lên: 08/08/2014, 18:21

... Photosynthesis and leaf longevity in alder, birch and ash seedlings grown under different nitrogen levels T. Koike 1 M. Sanada 2 1 Swiss Federal Institute of Forestry ... rates and leaf longevity of deciduous broad-leaved tree seedlings in relation to the anatomical characteristics in leaves. Materials and Methods One yr old seedlings...

Ngày tải lên: 09/08/2014, 04:20

... the stem and on fine days during the growing season. On cloudy and rainy days, the depression Diurnal and seasonal fluctuations in the bark respiration of standing Quercus ... day, and the difference between the daily maximum and minimum values of respiration rates in the upper part of the stem was greater than that o...

Ngày tải lên: 09/08/2014, 04:20