Effects of Leaf Loss by Artificial Defoliation on the Growth of Different Poplar and Willow Varieties

编号 010030905

推送时间 20210920

研究领域 森林生态 

年份 2021 

类型 期刊 

语种 英语

标题 Effects of Leaf Loss by Artificial Defoliation on the Growth of Different Poplar and Willow Varieties

来源期刊 forest

期 第309期

发表时间 20210908

关键词 short rotation coppices;  poplars;  willows;  feeding simulation;  defoliation;  herbivory; 

摘要 The cultivation of fast-growing tree species in short rotation coppices has gained popularity in Germany in recent years. The resilience of these coppices to phyllophagous pest organisms is crucial for their profitable management, since the loss of a single annual increment can lead to uncompensable economic losses. To study the effects of leaf loss on the growth of poplar and willow varieties that are frequently cultivated under local conditions, three sample short rotation coppices including five poplar (Populus spp.) and three willow (Salix spp.) varieties were established in a randomized block design with four artificial defoliation variants and, on one site, with three different variants regarding the number of defoliation treatments. After up to three defoliation treatments within two growing seasons, the results show negative effects of leaf loss on the height growth and the fresh weight of the aboveground biomass of plants. Our data also suggests a lasting effect of defoliation on plant growth and re-growth after the end of the treatment. In general, defoliation had a greater impact on the growth of poplars than on willows. We conclude that even minor leaf loss can have an impact on plant growth but that the actual effects of defoliation clearly depend on the site, tree species, and variety as well as the extent and number of defoliations, which determine the ability of plants for compensatory growth. View Full-Text

服务人员 王璐

服务院士 蒋有绪

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