A multi-scale approach to assess hot spots, rates and trajectories of ecosystem change in mid-western Canada

评估加拿大中西部生态系统变化热点、速率和轨迹的多尺度方法

• 批准号: RGPIN-2015-06463
• 负责人: Hopkinson, Christopher
• 金额: $ 1.6万
• 依托单位: University of Lethbridge
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=591081
• 关键词: multi; scale; approach; assess; hot

Climate and landcover changes are natural features of the dynamic Earth System. However, recent air temperature increases have been more rapid and more significant than those of the last millennia (IPCC 2013). High latitude regions are sensitive to these changes with some areas experiencing a 2oC increase in average air temperatures in recent years. Transitional ecosystems along elevational and latidudinal gradients are highly sensitive to small perturbations in the climate system, thereby increasing local thermal inertia. Further, pressures from natural and anthropogenic disturbance exacerbate the sensitivity of some ecosystems with relatively unknown large-area consequences. Few studies have examined spatio-temporal impacts of climate forcing and disturbance on morpho-biophysical ecosystem characteristics across multiple ecozones, and none have utilised a multi-scale (plot to region) digital finger printing approach to construct a baseline archive of ecosystem 3D attributes.

气候和土地覆盖变化是动态地球系统的自然特征。然而，最近的气温上升比过去千年更加迅速和显着（IPCC 2013）。高纬度地区对这些变化很敏感，近年来一些地区的平均气温上升了 2 摄氏度。沿海拔和纬度梯度的过渡生态系统对气候系统的小扰动高度敏感，从而增加了当地的热惯性。此外，自然和人为干扰的压力加剧了一些生态系统的敏感性，其大面积后果相对未知。很少有研究探讨气候强迫和干扰对多个生态区形态生物物理生态系统特征的时空影响，也没有一项研究利用多尺度（图到区域）数字指纹方法来构建生态系统 3D 属性的基线档案。