Trade-Offs among Release Treatments in Jack Pine Plantations: Twenty-Five Year Responses

编号 010028503

推送时间 20210405

研究领域 森林生态 

年份 2021 

类型 期刊 

语种 英语

标题 Trade-Offs among Release Treatments in Jack Pine Plantations: Twenty-Five Year Responses

来源期刊 forest

期 第285期

发表时间 20210320

关键词 vegetation management;  Pinus banksiana;  plantations;  herbicides;  glyphosate;  growth and yield;  diversity; 

摘要 We assessed 27 indicators of plant diversity, stand yield and individual crop tree responses 25 years post-treatment to determine long-term trade-offs among conifer release treatments in boreal and sub-boreal forests. This research addresses the lack of longer-term data needed by forest managers to implement more integrated vegetation management programs, supporting more informed decisions about release treatment choice. Four treatments (untreated control, motor-manual brushsaw, single aerial spray, and complete competition removal) were established at two jack pine (Pinus banksiana Lamb.) sites in Ontario, Canada. Our results suggest that plant diversity and productivity in boreal jack pine forests are significantly influenced by vegetation management treatments. Overall, release treatments did not cause a loss of diversity but benefitted stand-scale yield and individual crop tree growth, with maximum benefits occurring in more intensive release treatments. However, none of the treatments maximized all 27 indicators studied; thus, forest managers are faced with trade-offs when choosing treatments. Research on longer term effects, ideally through at least one rotation, is essential to fully understand outcomes of different vegetation management on forest diversity, stand yield, and individual crop tree responses. View Full-Text

服务人员 王璐

服务院士 蒋有绪

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