Soil fauna indicators for evaluating and comparing the ecological status of recovered forest systems

用于评估和比较恢复森林系统生态状况的土壤动物指标

基本信息

批准号：
533693-2018
负责人：
Lindo, Zoë
金额：
$ 1.82万
依托单位：
University of Western Ontario
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=657679
关键词：
Soil fauna indicators evaluating comparing

项目摘要

Forestry is an important resource industry to Canada's economy and good forest stewardship begins with understanding and implementing sustainable forest harvesting and silviculture best practises. The development of a validated baseline indicator approach for assessing disturbance and recovery of soil biodiversity in forest systems has environmental as well as economic benefits that could be realised across Canada. It is increasingly recognized that clear-cut harvesting (i.e., full stand logging) creates significant and persistent modifications to forest structure and function. Less intensive practices such as partial-cutting within uneven-age management are proposed as an alternative. However, few studies have compared the effects of partial-cut and clear-cut practices at two temporal scales (i.e., short vs. long term). In Québec, forest industry companies such as Groupe Rémabec, urgently need this information to manage mixedwood forests in a more sustainable way. Such assessment could be improved by the use of ecological indicators and notably living organisms such as soil fauna that contribute to essential soil processes of litter decomposition and nutrient cycling. While it is well-established that soil faunal community structure is altered by forest harvesting through compaction, loss of soil organic matter, and other associated soil environmental changes (e.g., modified soil cover, microclimate, and food supply), accurate ecological indicator species have not been previously identified for Canadian forests. In addition, because different geographic locations may contain different species, the identification of functional traits that indicate disturbance or recovery and do not require taxonomic assessments would be particularly beneficial. Our taxonomic expertise allow us to assess species-level traits (e.g., dispersal, fecundity, development rate, body size), examine functional community shifts and identify suites of traits that are associated with disturbance impact (uncut, partial-cut, clear-cut) and community recovery in forests managed by Groupe Rémabec. The resulting product will allow Groupe Rémabec to evaluate the ecological status of recovered forest systems, and offer more sustainable management of Québec mixedwood forests.********

林业是加拿大经济的重要资源行业，良好的森林管理始于理解和实施可持续的森林收获和造林最佳实践。开发了经过验证的基线指标方法，用于评估森林系统中土壤生物多样性的灾难和恢复，具有环境和经济利益，可以在整个加拿大实现。越来越多地认识到，清晰的收获（即，完整的摊位记录）会对森林结构和功能产生重大和持续的修改。提出了较少的强度实践，例如不均年龄管理中的部分切割，以替代方式。但是，很少有研究比较了两个临时尺度（即短期与长期）部分切割和清晰练习的影响。在魁北克，诸如Rémabec集团的森林行业公司急需这些信息以更可持续的方式管理混合木材森林。通过使用生态指标和尤其是生物动物（例如土壤动物群），可以改善这种评估，这些生物有助于垃圾分解和养分循环的必不可少的土壤过程。尽管众所周知，通过压实，土壤有机物的损失以及其他相关的土壤环境变化（例如，改良的土壤覆盖率，微气候和食品供应）通过压实，土壤有机物的损失以及其他相关的土壤环境变化来改变土壤贫穷的群落结构，但先前尚未确定加拿大森林的准确生态指标物种。此外，由于不同的地理位置可能包含不同的物种，因此表明灾难或恢复且不需要分类学评估的功能性状的识别将特别有益。我们的分类专业知识使我们能够评估物种水平的特征（例如，分散，生育，发展速度，体型），检查功能性社区的转变并确定与灾难影响相关的特征的套件（未切割，部分切割，清晰，清晰切割）和由GroupeRémabec管理的森林管理的社区恢复。最终的产品将允许GroupeRémabec评估回收的森林系统的生态状况，并为魁北克混合木材森林提供更可持续的管理。********