Growth decrease and mortality of oak floodplain forests as a response to change of water regime and climate

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• 作者：D. B. Stojanovi? ; T. Levani? ; B. Matovi? ; S. Orlovi?
• 关键词：Quercus robur ; Water level ; Decline ; Climate change ; Dendroecology ; Groundwater
• 刊名：European Journal of Forest Research
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：134
• 期：3
• 页码：555-567
• 全文大小：3,977 KB
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  Gri?ar J,
• 作者单位：D. B. Stojanovi? (1)
  T. Levani? (2)
  B. Matovi? (1)
  S. Orlovi? (1)
  
  1. Institute of Lowland Forestry and Environment, University of Novi Sad, Antona Cehova 13d, 21000, Novi Sad, Serbia
  2. Slovenian Forestry Institute, Vecna pot 2, 1000, Ljubljana, Slovenia
  
• 刊物主题：Forestry; Plant Sciences; Plant Ecology;
• 出版者：Springer Berlin Heidelberg
• ISSN：1612-4677

文摘

Forest mortality is globally present, and pedunculate oak (Quercus robur) forests in Europe are no exception at all. The aim of this study was to tackle the issue of oak floodplain forests response to water level, temperature and precipitation changes due to the altered climate conditions. We examined interannual and interseasonal scales using dendroecological analysis. The goal was to review the growth from the perspective of forest management practice, including specific recommendations for forest managers. The most important environmental variable in the growth of pedunculate oak forests in Serbia (Srem region) in the last 60?years was the Sava River water level. Due to the decrease in the water level and temperature increase in the last 30?years, a general decline in growth was observed. The months that displayed the most significant correlation between the growth, water level and temperature were April, May, June, July and August, while May was the most significant month as far as precipitation influence is concerned. Responses of the various tree groups due to different age and sites (flooded vs. non-flooded, virgin vs. managed forests) were observed, although all tree groups displayed fundamentally the same response to variations in environmental conditions. The “Stara Vrati?na-virgin forest was considered to be without future owing to the growth decline and lack of regeneration. Guidelines for forest managers were created. Overall directions were: to increase the groundwater level in the ecosystem during prolonged drought periods if possible; to promote regeneration, which is closer to nature; and to promote forest mixing.