Báo cáo lâm nghiệp: "Carbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)" potx

... shallow peatlands (mainly peaty gleys) have been planted with coniferous forests, mostly Sitka spruce (Picea sitchensis (Bong.) Carr) [3]. Afforestation on peaty soils may cause an increase in ... (stand ages between 2 and 34 years old) in Florida. Afforestation on natural grassland, clearfelling and replant- ing also caused changes in the soil bulk densities, main...

Ngày tải lên: 08/08/2014, 00:22

... of diverse landscapes? Fenina, 178: 55–80. W T. (1998): Landscape structure as indicators for sustainable land use? A case study in alpine and lowland landscapes of Austria. In: D J.W., ... application, the project in- volves mapping both the landscape permeability re- garding migration and landscape structure changes in an area in uenced by a linear construction in...

Ngày tải lên: 07/08/2014, 10:21

... taken up from the whole available soil pool [27]. It is a natural process acting against soil acidification. In strongly acidic soils, or in soils without any weatherable minerals such as a large ... per year and mean annual temperature was 7 °C [19]. 2.2. Soil characteristics Soils were developed on a Visean compact volcanic tuff rich in alkaline and earth alkaline elements...

Ngày tải lên: 08/08/2014, 01:21

... bal- samea). Can J Bot 59, 1285-1291 Neale DB, Adams WT (1985) Allozyme and mating- system variation in balsam fir (Abies balsamea) across a continuous elevational transect. ... 1989); A lasiocarpa, tm = 0.89 (Shea, 1987); A balsamea, tm = 0.89 (Neale and Adams, 1985). This is in good concordance with phenological and biological observations...

Ngày tải lên: 08/08/2014, 18:21

... targets by increasing biological carbon (C) sequestration in terrestrial ecosystems, as indicated in Art. 3.3 (Afforestation, Reforestation and Defor- estation) and Art. 3.4 (Additional human-induced ... Groen (AB&G), Boskartering 2004, available at http://www.mina.vlaanderen.be/wiedoetwat/aminal/taken/bosengroen/ frmsetbos.htm [16/12/2004]. [3] Afdeling Bos & Groen (AB&G), Bo...

Ngày tải lên: 08/08/2014, 00:22

... Karlsruhe Ber. 163-171 1 Hampp R., Einig W., Keil R. & Fink S. (1989) Energy status and carbon partitioning in spruce: specific changes in relation to needle age and degree ... precede any visible signs of damage. The determina- tion of F26BP levels in needles could constitute an early indicator of affected carbon allocation. Acknowledgmen...

Ngày tải lên: 09/08/2014, 04:20

... carbon balance In addition to the trends towards increase, the annual changes in the biomass, litter and soil carbon balance were highly variable. Such inter annual variability is important on a site ... balance based on for- est inventory data. Uncertainty in the estimates obtained using this method can be assessed by means of Monte Carlo simulations that account for uncertainty...

Ngày tải lên: 07/08/2014, 16:20

... LCA, all life cycle stages of the competing products from raw material extraction, production to their use phase and disposal are accounted for and assessed, including energy generation and trans- ports. The ... fact be rather low. This effect is linked to a far larger decrease of the standing volume of trees (and thus carbon) in the forests and of soil carbon because of the harvesting,...

Ngày tải lên: 08/08/2014, 00:22

... Given that % PAR was measured each year on site 3, a profile analysis (ANOVAR) was also performed. A similar ANO- VAR was used to examine competing vegetation effects on mean daily soil temperature ... studies with black spruce (Picea mariana (Mill.) B.S.P.) and white spruce (Picea glauca (Moench) Voss) large seedling stock, two com- monly planted species across Canada,...

Ngày tải lên: 08/08/2014, 01:21

... of every individual part. Partitioning of winter N and total C and N were calculated with a similar procedure. 2.4. Non-structural carbohydrate analyses Samples of leaves, stem, lateral branches and ... year and second year leaves, both RSA C and RSA N decrease from January to August in a parallel way and the ratio of the two was always constant. The same was true for coarse and fine...

Ngày tải lên: 08/08/2014, 01:22