scholarly journals Estimating coarse roots biomass in young silver birch stands on post-agricultural lands in central Poland

Silva Fennica ◽  
2013 ◽  
Vol 47 (2) ◽  
Author(s):  
Szymon Bijak ◽  
Michał Zasada ◽  
Agnieszka Bronisz ◽  
Karol Bronisz ◽  
Maciej Czajkowski ◽  
...  
Keyword(s):  
Silver Birch ◽  
Agricultural Lands ◽  
Coarse Roots ◽  
Central Poland

scholarly journals Macro- and Micronutrient Contents in Soils of a Chronosequence of Naturally Regenerated Birch Stands on Abandoned Agricultural Lands in Central Poland

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 956
Author(s):  
Tomasz Gawęda ◽  
Stanisław Małek ◽  
Ewa Błońska ◽  
Andrzej M. Jagodziński ◽  
Szymon Bijak ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Soil Profile ◽  
Secondary Succession ◽  
Chemical Properties ◽  
Silver Birch ◽  
Agricultural Lands ◽  
Economic Point ◽  
Age Class ◽  
Central Poland ◽  
Chemical Properties Of Soils

Abandoned agricultural lands in Central and Northern Europe undergo a quite rapid secondary succession of woody species, especially silver birch (Betula pendula Roth.) as a pioneer tree species. Such a process is desirable both from natural and economic point of views, as afforestation involves a change to the entire ecosystem and, in particular, the transformation of anthropogenic habitats typical for agriculture into habitats similar to a natural forest. In the present study, we report the chemical properties of soils under birch stands that naturally regenerated on abandoned agricultural lands and answer the question of whether silver birch modifies the chemical properties of soils over a (relatively short—17 years) time and with depth in the soil profile. The research investigated the natural secondary succession of silver birch on 28 study plots established as a chronosequence in seven locations in Central Poland. The age of the stands ranged from 2 to 17 years. We analysed the contents of selected micro- and macroelements and heavy metals at three depths in the soil profile. The chemical properties of former agricultural soils covered with newly established silver birch stands, taking into account the depth in the soil profile, demonstrated tendencies to change over the time. In the first age class of birch stands, the stock of investigated nutrients in the soil was higher compared to the following age classes. Statistically significant differences were noted in the case of Cu and Cr. Along with the age of birch stands (age class IV), there was a tendency for stock of the analysed nutrients to grow, which can be associated with an increase in aboveground biomass and root system development. The changes in the contents of the macro- and microelements, as well as heavy metals, were characterised by a gradual increase of the elements analysed in the upper layer of the soil that, in the years following the birch influence on the soil, starts having an effect on the deeper layers. In the case of Cu, Pb, Cd, Ni and Cr, there was a statistically significant change in the depth of the soil. Longer chronosequences should be observed to see a clear trajectory in soil chemistry changes with birch stand ages.

Nutrient concentrations in stumps and coarse roots of Norway spruce, Scots pine and silver birch in Sweden, Finland and Denmark

2013 ◽  
Vol 290 ◽  
pp. 40-48 ◽  
Author(s):  
Sofie Hellsten ◽  
Heljä-Sisko Helmisaari ◽  
Ylva Melin ◽  
Jens Peter Skovsgaard ◽  
Seija Kaakinen ◽  
...  
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
Silver Birch ◽  
Nutrient Concentrations ◽  
Coarse Roots

scholarly journals Seemingly Unrelated Mixed-Effects Biomass Models for Young Silver Birch Stands on Post-Agricultural Lands

Forests ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 381
Author(s):  
Karol Bronisz ◽  
Lauri Mehtätalo
Keyword(s):  
Tree Height ◽  
Mixed Effects ◽  
Model System ◽  
Silver Birch ◽  
Estimation Methods ◽  
Biomass Estimation ◽  
Agricultural Lands ◽  
Cross Model ◽  
Diameter At Breast Height ◽  
Breast Height

Secondary succession that occurs on abandoned farmlands is an important source of biomass carbon stocks. Both direct and indirect tree biomass estimation methods are applied on forest lands. Using empirical data from 148 uprooted trees, we developed a seemingly unrelated mixed-effects models system for the young silver birch that grows on post agricultural lands in central Poland. Tree height, biomass of stem, branches, foliage, and roots are used as dependent variables; the diameter at breast height is used as the independent variable. During model elaboration we used restricted cubic spline: 5 knots at the quantiles (0.05, 0.275, 0.5, 0.725, and 0.95) of diameter at breast height provided sufficiently flexible curves for all biomass components. In this study, we demonstrate the use of the model system through cross-model calibration of the biomass component model using tree height measured from 0, 2, 3, and 4 available extreme trees feature in the plot in question. A different number of extreme trees were measured for final model system and our results indicated that for all analyzed components, random-effect predictions are characterized by higher accuracy than fixed-effects predictions.

scholarly journals The growth and production of some fast growing deciduous tree species stands on abandoned agricultural land

2010 ◽  
Vol 52 (1) ◽  
pp. 18-29 ◽  
Author(s):  
Veiko Uri ◽  
Jürgen Aosaar ◽  
Mats Varik ◽  
Merit Kund
Keyword(s):  
Biomass Production ◽  
Tree Species ◽  
Agricultural Land ◽  
Rotation Period ◽  
Silver Birch ◽  
Stem Volume ◽  
Above Ground Biomass ◽  
Agricultural Lands ◽  
Growing Stock ◽  
Ground Biomass

Mõningate kiirekasvuliste lehtpuupuistute kasv ja produktsioonivõime endisel põllumaalSeveral studies about stands growing on abandoned agricultural lands are induced by extensive afforestation of agricultural lands and more intensive use of biomass. Overview of above-ground biomass production of grey alder, hybrid alder and silver birch young stands growing on former agricultural areas are presented in current paper. The results of 16- and 6-year period of alders and silver birch stands, respectively, are reported. Above-ground biomass and biomass production of stands were estimated. The growing stock and current annual increment (CAI) of 16-years-old grey alder stand were 250 m3ha-1and 35.6 m3ha-1, respectively. Due to fast growth and high biomass production capacity grey alder is promising tree species for short-rotation forestry in Estonia. Hybrid alder is productive tree although not exceeding the productivity of grey alders. Stem volume and CAI of the 16-years-old hybrid alder stand were 155 m3ha-1and 21 m3ha-1, respectively. Our results supported earlier data reported in literature: rotation period of hybrid alder is longer than for grey alder and CAI of hybrid alder stands culminate later. The productivity of young silver birch stands on abandoned agricultural land is varying in a broad range. One young silver birch stand growing on abandoned agricultural land was involved into study. Growing stock and CAI in 13-years old stand were 118 m3ha-1and 15 m3ha-1, respectively. These values are exceeding respective values of several yield tables of silver birch and biomass production capability of silver birch stands in favourable conditions is high.

A Study on the Inpact of Tsunami Hit on Agricultural Lands in Nagappatinam District

2012 ◽  
Vol 2 (4) ◽  
pp. 60-62
Author(s):  
Dr. T. Semban Dr. T. Semban ◽  
◽  
M. Mahalakshmi M. Mahalakshmi
Keyword(s):  
Agricultural Lands
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