Báo cáo lâm nghiệp: "Screening for efficient cold hardening

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

... efficient cold hardening in a breeding population of Salix using near infrared reflectance spectroscopy Mattias LENNARTSSON, Erling ÖGREN* Umeå Plant Science Centre, Department of Forest Genetics and ... hardening clone and an early-and-rapidly hardening one; and to test the value of the spectral technique for diagnosing cold hardiness in a breeding...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Modelling juvenile-mature wood transition in Scots pine (Pinus sylvestris L.) using nonlinear mixed-effects models" ppsx

... derive efficient and consistent estimates for the transition point in a population from a sample drawn from that population, whereby the time- series nature of the data can be taken into account. ... inter- vals, each representing 5% of the ring width, and average density val- ues were computed for each interval. These averages were used in all further analyses as they ar...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "Coarse woody debris carbon stocks in natural spruce forests of Babia hora" potx

... old-growth riparian forests in Canada, and indigenous forests in New Zea- land, respectively. Unfortunately, we have not found any information about CWD carbon stock in other virgin forests of Europe. ... accounts for aboveground coarse woody debris including standing dead trees, lying deadwood, and naturally formed stumps. Basic mensurational information (diameter, height, d...

Ngày tải lên : 07/08/2014, 10:21

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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 associated with T. piniperda in pine stands near Warsaw. The pathogenicity of blue-stain fungi has been studied by fungal inoculation of large ... In ad- dition, the pathogenicity of several blue-stain fungi associated with T. piniperda was investigated by inoculating Scots pine seedlings. 2. MATERIALS AND METHODS 2.1. Study a...

Ngày tải lên : 07/08/2014, 16:20

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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 (mean logging intensity = 6 trees ha –1 ). Plots belonging to G2, had a remaining basal area varying between 70 and 79% of the ... on forest dynamic processes, regardless of the logging tech- niques, we ordered the 48 subplots according to the proportion of remaining basal area (basal area after logging/origi...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Integrating revenues from carbon sequestration into economic breeding objectives for Eucalyptus globulus pulpwood production" ppt

... (known as The Australian Forestry Standard), Australian Forestry Standard Project Oﬃce, Standards Australia, Canberra, 2003. [3] Beets P.N., Whitehead D., Carbon partitioning in Pinus radi ata stands ... and CRC for Forestry, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia b PlantPlan Genetics Pty Ltd. Private Bag 55, Hobart, Tasmania 7001, Australia c School o...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp:"Competition for water between beech seedlings and surrounding vegetation in different light and vegetation composition conditions" ppsx

... I): in the former meadow (M), one half of the area was periodically hand-weeded to maintain a bare soil and prevent installation of vegetation (M – V, 75 m 2 ). The other half was left in natural ... of agricultural land abandonment: in a recently abandoned meadow and in an old meadow colonised by a naturally regen- erated 25-year-old Scots pine stand. During the natural a...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "The root-plant ratio changes in the first growing periods of wild cherry (Prunus avium L.) plantations" pptx

... im- portance of diﬀerent sections for plant performance in the forest. MATERIAL AND METHODS Research plots of wild cherry plantation were established in April 2002 at the Training Forest Enterprise ... driving variables for the growth performance of new plantation in the forest. e study summarises data on the volume of major parts of 4 years old wild cherry trees. An a...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Rodent-caused damage to forest trees from the viewpoint of forestry practice" potx

... to plantations becomes apparent, being unable to defend against this harmful factor. One of the reasons for this passive approach to deal- ing with damage caused by small mammals is certain underestimation ... damaged trees, prevalent type of damage and characteristics of vegetation of severely damaged plots. (3) Control of damage caused by small mammals. Information gathered...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Production and humus form development in forest stands established on agricultural lands – Kostelec nad Černými lesy region" potx

... located in the stand of Norway spruce (Picea abies) of total area 3.98 ha, the plot area is 0.191 ha. e third plot is situated in the birch stand (Betula verrucosa) of total area 0.7 ha, the measured ... Douglas ﬁr stand and similar ones in stands of the other conifers. e sampling of sur- face humus was not possible in the birch stand (and on arable soil) because of...

Ngày tải lên : 07/08/2014, 03:22

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