Analysis of grassland ANPP dynamics due to changes in climate variables at Ukrainian Biosphere Reserve "Askania-Nova"

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Date
2017
Authors
Belyakov, Sergiy
Gofman, Orysia
Vyshenska, Iryna
Zvegintsev, Sergey
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Abstract
The Ukrainian feather-grass steppe ecosystems are highly vulnerable to climate changes. To study the impact of climatic factors on steppe ecosystems’ productivity, the correlation and stepwise regression analysis between ANPP and other variables were provided. The correlation of bioclimatic variables (month precipitation, relative humidity and air and soil temperatures) and aboveground net primary production (ANPP) were investigated for three study plots that represent major steppe microrelief: plain, slope and lowland. The results of multiple regression analysis showed the major components that influenced the ANPP at each of the study plots "Plain", "Slope" and "Lowland". The precipitation and relative humidity in the months before the vegetation peak were most important for ANPP accumulation. Results of this study are important for the prediction of ecosystem changes under the climate changes and also for the development of nature conservation programmes.
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Keywords
ANPP, steppe, grassland, precipitation, relative humidity, air and soil temperatures, correlation, multiple regression analysis
Citation
Analysis of grassland ANPP dynamics due to changes in climate variables at Ukrainian Biosphere Reserve "Askania-Nova" [electronic resourse] / Sergiy Belyakov, Orysia Gofman, Iryna Vyshenska, Sergey Zvegintsev // Ekolоgia. - Electronic data. - 2017. - Vol. 36, No. 3. - P. 235-246.