干旱区生态环境知识资源中心(Arid): Topographic, edaphic and climate influences on aspen (Populus tremuloides) drought stress on an intermountain bunchgrass prairie

Arid

DOI	10.1016/j.foreco.2020.118530
	Topographic, edaphic and climate influences on aspen (Populus tremuloides) drought stress on an intermountain bunchgrass prairie
	Neary, Andrew; Mata-Gonzalez, Ricardo; Schmalz, Heidi
通讯作者	Mata-Gonzalez, R
来源期刊	FOREST ECOLOGY AND MANAGEMENT
ISSN	0378-1127
EISSN	1872-7042
出版年	2021
卷号	479
英文摘要	Quaking aspen, Populus tremuloides, has experienced severe declines in recent years in part due to the effects of changing climate and extreme drought. This study set out to investigate these effects by assessing associations of climatic, edaphic and topographic variables with physiological drought stress in aspen. The study took place on the Zumwalt Prairie in northeastern Oregon, a semi-arid bunchgrass prairie where aspen occur in isolated stands associated with riparian areas and late-season persistence of snow drifts. Using a 33-year time series of Landsat imagery to detect associations of aspen stands late-season snow cover and field measurements of soil moisture in aspen stands during 2017, we found while snow dominated stands were associated with greater soil moisture during spring, levels had equilibrated to those of other upland stands by summer. Measurements of predawn and midday stem Psi in multiple height classes of aspen ramets revealed associations of both shallow soil moisture and vapor pressure deficit with physiological drought stress in aspen. Analysis of soil texture class revealed an important association with midday stem Psi, with finer textured soils associated with decreased stem Psi in comparison to coarser textured soils. While neither topographical characteristics nor snow cover were found to be important drivers of drought stress, topographical curvature was found to have a strong influence on summer soil moisture in upland stands. These findings contribute to our understanding of aspen physiology, drought ecology and landscape hydrology toward the xeric margin of aspen's range. This information can help land managers anticipate and adapt to changing climates and understand their effects on key plant species such as aspen.
英文关键词	Aspen degradation Physiological drought stress Snow cover Soil moisture Water potential Zumwalt Prairie
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000592038000014
WOS关键词	VAPOR-PRESSURE DEFICIT ; TREMBLING ASPEN ; WATER-STRESS ; MORTALITY ; SOIL ; DYNAMICS ; PLANT ; SNOW ; SEEDLINGS ; STANDS
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328027
作者单位	[Neary, Andrew; Mata-Gonzalez, Ricardo] Oregon State Univ, Dept Anim & Rangeland Sci, 120 Withycombe Hall, Corvallis, OR 97331 USA; [Schmalz, Heidi] Nature Conservancy, Zumwalt Prairie Preserve, 906 S River St, Enterprise, OR 97828 USA
推荐引用方式 GB/T 7714	Neary, Andrew,Mata-Gonzalez, Ricardo,Schmalz, Heidi. Topographic, edaphic and climate influences on aspen (Populus tremuloides) drought stress on an intermountain bunchgrass prairie[J],2021,479.
APA	Neary, Andrew,Mata-Gonzalez, Ricardo,&Schmalz, Heidi.(2021).Topographic, edaphic and climate influences on aspen (Populus tremuloides) drought stress on an intermountain bunchgrass prairie.FOREST ECOLOGY AND MANAGEMENT,479.
MLA	Neary, Andrew,et al."Topographic, edaphic and climate influences on aspen (Populus tremuloides) drought stress on an intermountain bunchgrass prairie".FOREST ECOLOGY AND MANAGEMENT 479(2021).