Multidimensional spatial patterns of vegetation recovery post disturbance

干扰后植被恢复的多维空间格局

• 批准号: 341895-2007
• 负责人: Remmel, Tarmo
• 金额: $ 1.18万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364577
• 关键词: Multidimensional; spatial; patterns; vegetation; recovery

The boreal forest forms a wide circum-polar swath covering extensive regions of Canada, Scandinavia, and Siberia.  This biome provides natural functioning to regulate numerous atmospheric and hydrologic processes while providing habitat for many species of flora and fauna.  Susceptible to extensive natural disturbances (e.g. fire, insects, wind), these northern forests are effectively described as forming a heterogeneous dynamic landscape mosaic.  Additionally, the vast boreal forest represents a renewable natural resource that results in extensive harvesting operations for extracting timber and wood fiber; thus further altering the mosaic through anthropogenic influences.Current forest management policies stress the requirement of emulating natural disturbances while planning forest-harvesting operations.  Such legislated policies assume that the boreal environment is somehow able to better recover from, or unaffectedly develop following natural disturbances.  Thus, any anthropogenic alterations of the landscape should mimic these acceptable natural disturbances.  The problem remains that science currently cannot unequivocally explain the ecological differences among disturbance regimes nor can they scientifically claim that natural disturbances are better for the environment than are disturbances with anthropogenic origins.  This research has the goal to discover linkages among specific spatial patterns and ecological processes and to elucidate any differences among forest disturbance types.  If a spatial pattern can be contextualized as a realization of a spatial process at an instant in time, then that pattern should contain some insight to the process(es) that developed it.  It is the analysis and comparison of spatial patterns created by forest disturbances and the re-vegetation process that I wish to explore within a multidimensional spatial and temporal framework.  Research will integrate data from fieldwork, satellite imaging, and spatial statistical analysis.

北方森林形成了一个广阔的环极地地带，覆盖了加拿大、斯堪的纳维亚和西伯利亚的广大地区。这个生物群落提供了调节许多大气和水文过程的自然功能，同时为许多植物群和动物群提供了栖息地。易受大范围的自然干扰（例如火、昆虫、风），这些北方森林被有效地描述为形成异质动态景观镶嵌。此外，广阔的北方森林是一种可再生的自然资源，导致广泛的采伐作业，以提取木材和木纤维;目前的森林管理政策强调，在规划森林时，必须模拟自然干扰，采伐作业。这种立法政策假定北方环境在自然干扰之后能够以某种方式更好地恢复或不受影响地发展。因此，任何人为的景观改变都应该模仿这些可接受的自然干扰。问题仍然是，科学目前还不能明确地解释干扰机制之间的生态差异，也不能科学地声称自然干扰比人为干扰对环境更好。这项研究的目标是发现特定空间格局和生态过程之间的联系，并阐明森林干扰类型之间的任何差异。如果空间格局可以被情境化为空间过程的实现，那么空间过程的实现就可以在一个特定的环境中进行我希望在一个多维空间和时间框架内探讨森林干扰和植被恢复过程所造成的空间格局的分析和比较，研究将整合来自实地调查、卫星成像和空间统计分析的数据。