Báo cáo lâm nghiệp: "Sustainable cutting cycle and yields in a lowland mixed dipterocarp forest of Borneo" docx

... slightly damaged plots with a remaining basal area ≥ 80% of the original (meanlogging intensity = 6 trees ha–1). Plots belonging to G2, had a remaining basal area varying between 70 and 79% of the ... large areas. Moreover, matrix models can also pre-dict in a robust way and as reliably as other approaches, standstructure (density, basal area and diameter distribution) and are mathematically ... frommanagement of mixed lowland dipterocarps in Malaysia, J. Trop.For. Sci. 9 (1996) 242–270. [22] Kartawinata K., Biological changes after logging in lowland dipte-rocarp forest, in: Proceedings...

Báo cáo lâm nghiệp:" Structure, spatial distribution and competition in mixed jack pine (Pinus banksiana) stands on clay soils of eastern Canada" pps

... skewness of basal area distribution of the three main tree species in pure jack pine stands and standscomposed of a mixture of jack pine and white birch and jack pine and trembling aspen.Source ... skewness in basal areadistribution of jack pine between pure jack pine stands and stands composed of a mixture of jack pine and either of whitebirch or aspen. Trembling aspen basal area distribution ... competition in mixed jack pine (Pinus banksiana) stands on clay soils of eastern CanadaMartin BÉLAND a, b*, Jean-Martin LUSSIERc, Yves BERGERON a , Marie-Hélène LONGPRÉ a , Michel BÉLANDd a Groupe...

Báo cáo lâm nghiệp: "Screening for efficient cold hardening in a breeding population of Salix using near infrared reflectance spectroscopy" pps

... hardeningclone and an early -and- rapidly hardening one; and to test thevalue of the spectral technique for diagnosing cold hardiness in a breeding situation.2. MATERIALS AND METHODS2.1. Plant material A ... originated from continental Russia, dis-played an earlier start and a more rapid rate of cold hardeningthan the female grandparent (P**), which originated from a temperate climate. The range of ... have the disadvantage of being laborious and destruc-tive. Alternatively, cold hardiness can be evaluated indirectlyby means of underlying physiological and genetic factors. Cha-racterising...

Báo cáo khoa học: "Cystic endometrial hyperplasia and endometritis in a dog following prolonged treatment of medroxyprogesterone acetate" ppsx

... surface.Significant changes in the structure of the canineendometrium are associated with degeneration of luminalepithelium, cystic endometrial hyperplasia, pyometra and adenocarcinoma [1,6]. The basic ... Leitner M, Aurich JE, Galabova G, Aurich C, Walter I.Lectin binding patterns in normal canine endometrium and in bitches with pyometra and cystic endometrial hyperplasia.Histol Histopathol 2003, ... glands. H & E stain, ×100.Fig. 3. Endometrial hyperplasia accompanied by focalcalcification of uterus. Scattered inflammatory cells wereobserved in the endometrial stroma and mucinous...

Báo cáo lâm nghiệp: " Root system development and health condition of sycamore maple (Acer pseudoplatanus L.) in the air-polluted region of Krušné hory Mts" ppt

... composition of forest stands being rather low, the study of the species and mainly of its root system has been paid little attention so far. Available data which are however of rather general character ... Mts. and in the region of Bohemian-Moravian Upland or in a mu-tual comparison between the two regions (see stand situation 5, mutual comparison of stand situation 2 and 3, mutual comparison of ... vegetation zones 4 and 5 on more fertile sites in pollution damage zone D of the Bohemian-Moravian Upland served as a control. e basic investigation was done in 22 forest stands (forest stand...

Báo cáo lâm nghiệp: "Air pollution load and stand nutrition in the Forest District Jablunkov, part Nýdek" docx

... taken separately (A) . e mixed stand sample was analyzed. e mixed sample was composed of three spots in each stand.Chemical analyses were done in the FGMRI labo-ratory. e amount of available ... Ekológia, 25: 289–297.MANUAL on Methods and Criteria for Harmonized Sam-pling, Assessment, Monitoring and Analysis of the Eﬀects of Air Pollution on Forests. Part VI Sampling and Analysis of ... Declining Norway spruce stands are situated in a region of historically high air pollution load, mainly from the Třinec and Ostrava agglomeration. Air pol-lution signiﬁcantly decreased in the...

Báo cáo lâm nghiệp: " Fungi associated with Tomicus piniperda in Poland and assessment of their virulence using Scots pine seedlings" doc

... found that O. minus, O. piceae and O. piliferum were as-sociated with T. piniperda in pine stands near Warsaw.The pathogenicity of blue-stain fungi has been studied byfungal inoculation of large ... In ad-dition, the pathogenicity of several blue-stain fungi associatedwith T. piniperda was investigated by inoculating Scots pineseedlings.2. MATERIALS AND METHODS2.1. Study areasAll materials ... large trees. On the other hand, Krokene and Solheim [26], inoculating the same fungal isolates in largetrees and seedlings, found that seedling inoculation could be a reliable way of determining...

Báo cáo lâm nghiệp: "Post-transplant root and shoot development in Abies nordmanniana Spach. seedlings after whorl bud and branch pruning" potx

... including length of both tap and lat-eral roots, doubled from time of transplanting in April toﬁrst sampling in June in untreated controls and in seedlings in which whorl and lateral buds and ... taproot and lateral roots arescanned separately and that a resolution at 300 dpi with black and white background and threshold automatically gives the best correla-tion to manual determination of ... 14].As part of a project to stimulate new leader growth the aimwas to study root and shoot development of A. nordmanni-ana seedlings after transplanting, when whorl and lateral buds and whorl...

Báo cáo lâm nghiệp: "Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes" pps

... was found in both treatments for height and diameter growth, total biomass and leaf and stem biomass, with Pinus pinea attaining thehighest values, followed by P. canariensis, P. pinaster and P. ... Tecnolog a Agraria y Alimentaria (INIA), Apto 8111, 28080 Madrid, Spain(Received 27 February 2006; accepted 4 April 2006)Abstract – Seedlings of four populations each of Pinus pinaster, P. halepensis, ... biomass allocation in Mediterranean pines 91Table III. Proportion of the variance due to treatment, population and treatment by population interaction in the intra-speciﬁc analysis and signiﬁcance...

Báo cáo lâm nghiệp: "Soil carbon dioxide eﬄux in pure and mixed stands of oak and beech" potx

... tested, using contrasts in association with a linear mixed model containing the following variables: stand, moisture treatment,the interaction between stand and moisture treatment, and the tworandom ... our data.3. RESULTS3.1. Leaf litterfall, mass of the forest floor and of the Ahhorizon, and root abundance in the three standsLeaf litterfall was similar in the oak, mixed and beechstands ... al.Table II. Leaf litterfall, mass of the forest floor and of the Ah horizon, and root abundance in the three stands. Differences between stands weretested using an ANOVA 1 and significance may...

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