Wyniki wyszukiwania - Biblioteka Nauki

1

Precipitation variability in the middle Odra River basin in the years 1951-2005

100%

Otop I.

Acta Agrophysica. Rozprawy i Monografie

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2010

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nr 4[183]

2

The impact of climate change on habitat suitability for Artemisia sieberi and Artemisia aucheri (Asteraceae) – a modeling approach

100%

Mousaei Sanjerehei M. , Rundel P. W.

Polish Journal of Ecology

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2017

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tom 65

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nr 1

EN

We determined the current potential distribution of Artemisia sieberi and A. aucheri, two important widespread rangeland shrub species in Iran, using bioclimatic variables with and without the addition of elevation (E) to the MaxEnt model. The impact of climate change on the habitat suitability of the Artemisiaspecies was modeled for mid century under the projected climate change of GFDL-ESM2G (RCP2.6) model, a warmer and slightly wetter condition, and CCSM4 (RCP4.5) model, a warmer and drier condition. The results showed that annual precipitation (AP) and temperature annual range (TAR) were the most important drivers of A. aucheri distribution at a regional scale. With the addition of E to the model, we found that E and AP were the most significant factors in determining the habitat suitability of this species. The most significant factors influencing A. sieberi distribution were AP and annual mean temperature (AMT). E was not identified as the important variable influencing A. sieberi distribution when was added to the model in spite of its high correlation to AMT (|r| > 0.8), while AP was the most important, indicating that A. sieberi is less dependent on elevation than A. aucheri. A. aucheri is regarded as a high elevation species (E > 2500 m) which can be distributed in colder and wetter areas as compared to A. sieberi, a mid-elevation species (E < 2500 m). The projected climate change using both models has a much more impact on A. aucheri, potentially driving more losses and fewer gains in climatically suitable habitat of this species as compared to A. sieberi suggesting the adaptation of the later to a wider range of climatic conditions than A. aucheri. The results of the current and future distribution modeling of the Artemisia species is significant in managing susceptible habitats of these species for climate change and for habitat restoration.

3

Soil C:P ratio along elevational gradients in Picea schrenkiana forest of Tianshan Mountains

100%

Cao Y. , Wang Y. , Xu Z.

Polish Journal of Ecology

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2018

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tom 66

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nr 4

EN

Forest soils potentially store a large pool of carbon and phosphorus. A deep understanding of the total carbon and phosphorus stock in forest soils is vital in the assessment of the nutrients dynamics in forest ecosystems. This study examined the effects of elevation, soil depth, and climatic variables, specifically mean annual temperature (MAT) and mean annual precipitation (MAP), on soil carbon and organic phosphorus in Schrenk's spruce (Picea schrenkiana) forest at Tianshan Mountains. Results showed that soil organic carbon (SOC) significantly increased while organic phosphorus decreased with elevation. Interestingly, carbon increased faster with increasing elevation in the alluvial horizon than in the leached horizon, demonstrating the important role of deep soils in carbon sequestration potential. SOC concentration decreased with soil depth, whereas phosphorus concentration initially decreased and then increased. SOC had no significant relationships with MAT and MAP, whereas phosphorus concentration decreased with MAT. Similar to the impacts of MAT and MAP on SOC, these two climatic variables also exerted no significant influence on C:P ratio.

4

Mean annual precipitation in a mountain river catchment area in the period 1984-2012 (the case of Kamienica river)

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Cupak A. , Górka A. , Michalec B. , Wałęga A.

Geomatics, Landmanagement and Landscape

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2016

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tom no. 2

31--40

EN

The aim of the study is to evaluate the mean annual precipitation in the mountain river catchment area, in the period between 1984-2012. Data on daily rainfall totals was obtained from IMGW PIB in Warsaw, and it came from two weather stations: one in Nowy Sącz, and the other in Krynica. It has been demonstrated that during the multi-year period covered by the study, there were variations in terms of precipitation levels; the year 1987 should be considered e¬tremely dry, while 2010, extremely wet - in the latter year, extreme rainfall was noted. In the analysed multi-year period, within the total annual precipitation, rain dominated during the first half year, which undoubtedly affects the hydrological regime of the Kamienica river.

PL

Celem pracy jest ocena kształtowania się charakterystyk opadu na obszarze górskiej rzeki Kamienicy w wieloleciu 1984-2012. Dane dotyczące sum dobowych opadów pozyskano z IMGW PIB w Warszawie i pochodziły z dwóch stacji opadowych: Nowy Sącz i Krynica. Wykazano, że w badanym wieloleciu występowały zróżnicowane lata pod względem wilgotności; za szczególnie suchy należy uznać 1987 rok, a wilgotny to 2010 rok, gdyż w tym roku występowała największa liczba opadów ekstremalnych. W badanym wieloleciu w sumie rocznej opadów dominowały opady z półrocza letniego, co niewątpliwie wpływa na reżim hydrologiczny rzeki Kamienicy.

5

Zmiany średnich i niskich przepływów charakterystycznych rzeki Odry i jej dopływów

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Banasiak R.

Gospodarka Wodna

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2022

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tom Nr 7

10--14

PL

Celem pracy była aktualizacja oceny wielkości i tendencji zmian przepływów charakterystycznych niskich i średnich rzeki Odry oraz głównych jej dopływów. Badanie potwierdziło znaczące zmniejszenie się wartości niskich i średnich rocznych przepływów z wielolecia (SNQ i SSQ), zwłaszcza w ostatnich dwóch dekadach, dochodzące nawet do 30% na Odrze Środkowej oraz ok. 20% w dalszym biegu rzeki. Proces ten jest natomiast mniej widoczny na Górnej Odrze, od granicy z Czechami do przekroju wodowskazowego Racibórz. Główne dopływy Odry również znacząco zmniejszyły odpływy podczas niskich stanów, nawet o 50%, jednakże ich udział w redukcji SNQ Odry jest relatywnie nieduży. Stwierdzono przy tym, że trudno powiązać spadki przepływów charakterystycznych z rocznymi sumami opadów w dorzeczu Odry.

EN

The goal of the study was to update the assessment of the volume and trend in changes in low and medium characteristic flows of the Oder River and its main tributaries. The study confirmed a significant decrease in the low and medium values of annual flows in the multi-annual period (SNQ and SSQ), mainly in the last two decades, up to 30% in the Middle Oder and around 20% further downstream. This process is less visible in the Upper Oder, between the border with the Czech Republic and the Racibórz gauging station. Main Oder tributaries also registered a significant decrease in their the outflows during the low water stages, up to 50%; however their contribution to the Oder SNQ is relatively low. The article concludes that it is difficult to link the decrease in characteristic flows to annual precipitation in the Oder basin.

6

Wzor empiryczny wyrazajacy zmiennosc obszarowa normalnego rocznego opadu atmosferycznego w granicach Polski

80%

Sulinski J.

Acta Agraria et Silvestria. Series Silvestris

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1999

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tom 37

79-97

EN

Basing on natural conditions a formula was worked out permitting to compute the normal annual precipitation in any point of Poland defined by the geographic co-ordinates and elevation with mean accuracy of 6% and maximum error below l6% in relation to data obtained in 66 stations of the Institute of Meteorology and Water Management during 1951-1970. This formula may be identified using other sets of data fulfilling the criteria defined in the paper.