Báo cáo lâm nghiệp:"Relationships between soil factors, Quercus robur health, Collybia fusipes root infection and Phytophthora presence" doc

... dominance of a species (D) with the difference in damage to a given tree species and damage to all species (DifPD) and the proportion of damage to a given species and damage to all species (RPD) y ... attractive species D attrac = (N attrac /N all ) ì 100; ã a dierence between damage to a species and dam - age to all species DifPD = PD sp PD all ; ã a die...

Ngày tải lên: 07/08/2014, 10:21

... correlation between the aboveground parameters and the depth of root plates in spruce trees growing both in waterlogged and in well-drained sites. According to our results, it seems that the roots of ... 353 JOURNAL OF FOREST SCIENCE, 56, 2010 (8): 353–360 Relationships between the parameters of aboveground parts and the parameters of...

Ngày tải lên: 07/08/2014, 10:22

... analyse interannual and seasonal variation of litterfall in a cork oak forest of the Montseny massif (Catalonia, north-eastern Iberian Peninsula) and its relationship with meteorological data. 2. ... seasonal variation and twigs peaked in early summer and autumn. Rainfall precipi- tation was more variable and less seasonal than temperature but rainfall generally...

Ngày tải lên: 07/08/2014, 16:20

... 10.1051/forest:2007052 Original article Relationships between site and stock quality in Pinus halepensis Mill. reforestation on semiarid landscapes in eastern Spain Antonio D.  C a * , Rafael ... performance of Pinus halepensis Mill. In this order, the following questions were addressed: (i) What is the relative in uence between stock quality...

Ngày tải lên: 07/08/2014, 16:21

... trees in Southern and Northern Tragamón. Oak pollarding in 1806 affected the southernmost extreme of South- ern Tragamón, and the north-central area of Northern Trag- amón. On the other hand, oaks ... 300–399 and 400–499 years) and the mean distance between target trees and their nearest neighbours was calcu- lated within, and between, age classes. The null...

Ngày tải lên: 08/08/2014, 00:21

... 10.1051/forest:2005012 Original article Dendrochronology of pedunculate oak (Quercus robur L.) in an old -growth pollarded woodland in northern Spain: tree-ring growth responses to climate Vicente ROZAS a,b * a ... tree growth and cli- mate variables was investigated in Tragamón, an old -growth oak woodland in the Cantabrian lowlands,...

Ngày tải lên: 08/08/2014, 00:21

... 207– 231. [4] Bréda N., Granier A. , Intra- and inter-annual variations of transpi- ration, leaf area index and radial growth of a sessile oak stand (Quercus petraea), Ann. For. Sci. 53 (1996) 521–536. [5] ... robur (L.) stand from 1999 to 2001. I. Trees and forest floor daily transpiration Caroline VINCKE a *, Nathalie BREDA b , André GRANIER b , F...

Ngày tải lên: 08/08/2014, 00:22

... several ways according to leaf area development. For periods of leaf area expansion and leaf fall, daily transpiration was calculated with an equation based on daily PET and on a relative LAI (LAI i /LAImax), ... from 1999 to 2001. II. Daily actual evapotranspiration and soil water reserve Caroline VINCKE a *, André GRANIER b , Nathalie BREDA b , Freddy D...

Ngày tải lên: 08/08/2014, 00:22

... marginal des chênaies galiciennes de Quercus robur (voir liste des paramètres dans l’annexe). Figure 3. Habitat climatique central et marginal des chênaies galiciennes de Quercus robur (voir liste des ... dans des zones de pente élevée et dans des fonds de talweg, résultat de la pression anthropique à laquelle elles ont été soumises [28, 52], occupant des l...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2003011 Original article Comparison of soil water-contents as measured with a neutron probe and time domain reflectometry in a Mediterranean forest (“Sierra de Gata”, Central Western Spain) Mar a Amparo ... useful information about the actual evapotranspiration, drainage, and leaching [14]. Over the past decade, interest in water fluxes in...

Ngày tải lên: 08/08/2014, 01:21

... colinearity between the severity of waterlogging and of C. fusipes infection. Indeed, when all soil characteristics and root infection index were entered together in the model, only the root infection index ... sol, l’état du houppier de Quercus robur, les infections racinaires induites par Collybia fusipes et la présence de Phytophthora. Le niveau d infection ind...

Ngày tải lên: 08/08/2014, 01:21

... 525535 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2004047 Original article Relationships between stem size and branch basal diameter variability in Norway spruce (Picea abies (L.) Karsten) from ... relationships between branch basal diameter of living whorls, stem size (height and diameter at breast height) and stand parameters (stan...

Ngày tải lên: 08/08/2014, 01:22

... 81 Ann. For. Sci. 61 (2004) 8186 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003087 Original article Relationships between hydraulic traits and habitat preference for six Acer species occurring ... adapted for high water transport. In contrast, plants need to invest less in means of acquiring water for their growth in dry habitats, and therefore reduced...

Ngày tải lên: 08/08/2014, 01:22

... have reported the X-ray wood density measurement and the wood density profiles cal- culated by the mean of the cell wall proportion obtained by image analysis of the sections. The cell wall proportion ... et al. and (ii) the cell wall proportion on its area or on a section withdrawn from it. The apparent density of the cell wall is then...

Ngày tải lên: 08/08/2014, 01:22

... The effect of nitrogen content on the photosynthesis of Scots pine needles and shoots H. Smolander 1 P. Oker-Blom 2 The Finnish Forest Research Institute, Suonenjoki ... photosynthesis of conif- erous trees (Linder and Rook, 1984). The aim of this study was to analyze separate- ly the effect of nitrogen content on the photo...

Ngày tải lên: 09/08/2014, 04:20