Wyniki wyszukiwania - BazTech

1

Biomass dynamics in young silver birch stands on post-agricultural lands in central Poland

Zasada M., Bijak S., Bronisz K., Bronisz A., Gawęda T.

Drewno : prace naukowe, doniesienia, komunikaty

|

2014

|

vol. 57, nr 192

29--39

EN

The paper analyses the production and allocation of biomass in young, spontaneous silver birch afforestation occurring on post-agricultural lands in the Mazowsze region (central Poland). We investigated 114 sample plots of age varying from 1 to 19 years. During the first 15 years after their establishment on abandoned farmland, the naturally regenerated silver birch stands produced on average approximately 75 tons of dry biomass per hectare. The major (50–70%) part of this biomass was stored in the tree stems and this share increased with age. The fractions of biomass in the foliage and roots decreased over time, while the share of biomass in the branches remained rather constant. The significant age-dependency of the allometric relationships suggested the need to use age-sensitive biomass expansion factors to estimate the biomass from the stem volume.

2

Climate influence on radial increment of oak (Quercus sp.) in central Poland

Bronisz A., Bijak S., Bronisz K., Zasada M.

Geochronometria

|

2012

|

Vol. 39, no. 4

276-284

EN

The study investigates the influence of climate conditions on radial increment of oak, with special concern to the situations when analysed trees formed conspicuously wider or narrower tree-rings. The research material was collected in four locations in central Poland within natural range of pedunculate and sessile oaks. The elaborated residual chronologies were correlated with CRUTS 2.1 climate data. The analyses included thermal and pluvial conditions spanning from April of the year prior to ring formation to September of the current growth year. Special interest was paid to simple water ability index that combined both temperature and precipitation during the vegetation season. Additionally, pointer year analysis was carried out to determine situations when conspicuously small-er or larger increment was formed. Investigated chronologies cover the period of 1927-1992 (Łochów), 1845-1992 (Płońsk), 1868-1992 (Pułtusk), and 1796-1992 (Sokołów). The analysed oaks from sites in central Poland exhibit growth patterns comparable with those known form previous studies concerning that species, where influence of precipitation (higher and positive) and temperature (negative) have been observed. Extreme growth reactions expressed by negative and positive pointer years turned to present high dependence of ana-lysed oak’ growth on water availability during vegetation season.

3

Park osiedlowy w dzielnicy Ursus

Bronisz A.

Zieleń Miejska

|

2010

|

Nr 7-8

48-48

PL

Ursus to dzielnica warszawy, której poczatki sięgają lat 50. ub. wieku. Jej prężny rozwój związany był z działalnoscią miejscowej fabryki traktorów. Ofertę rekreacyjną dzielnicy wzbogacił w ostatnich latach park, który powstał przy ul. Wojciechowskiego, na obszarze pomiedzy zabudową mieszkaniową osiedla Niedźwiadek.