DOI: 10.1016/j.foreco.2014.10.029
Scopus记录号: 2-s2.0-84911453389
论文题名: Vegetative buds, needles and shoot growth of Norway spruce are affected by experimentally delayed soil thawing in the field
作者: Sutinen S. ; Roitto M. ; Repo T.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 336 起始页码: 217
结束页码: 223
语种: 英语
英文关键词: Bud formation
; Cold soil
; Microscopy
; Picea abies
; Snow manipulation
; Soil freezing
Scopus关键词: Climate change
; Forestry
; Freezing
; Microscopic examination
; Needles
; Plants (botany)
; Snow
; Soil mechanics
; Street cleaning
; Temperature
; Thawing
; Bud formation
; Cross sectional area
; Delayed soil thawing
; Forest management practices
; Picea abies
; Shoot elongation
; Soil freezing
; Stand development
; Soils
; air temperature
; climate change
; cold region
; deciduous forest
; forest management
; frost
; management practice
; microscopy
; shoot growth
; snowpack
; stand dynamics
; thawing
; Freezing
; Growth
; Needles
; Picea Abies
; Snow
; Soil
; Picea abies
英文摘要: Climate change may increase air temperature and decrease snowpack in the boreal zone. Due to declined insulating snow cover, tree roots may be exposed to too low soil temperatures that may be reflected in shoot growth. We studied the effects of soil freezing and delayed thawing on vegetative buds, needles and shoots in a 47-year-old boreal stand of Norway spruce ( Picea abies L. Karst). The treatments in two winters of 2005/06 and 2006/07 were: (i) natural snow accumulation and melting (CTRL), (ii) artificial snow removal during winter (OPEN), and (iii) the same as OPEN, but the ground was insulated in early spring to delay soil thawing (FROST). More soil freezing occurred in OPEN and FROST than CTRL, and soil thawing was delayed in FROST as compared to the two other treatments. The formation of new buds, and consequently the number of new shoots were reduced in FROST. The shoot elongation was reduced and the needle cross-sectional area was smaller in FROST compared to OPEN and CTRL. As the soil temperature in both OPEN and FROST was the same during winter, the wintertime soil frost could not be the reason for the changes. Instead, the delayed soil thawing and warming towards summer seemed to hamper the root function and thus reduced the growth of above ground part of the trees. Timing of soil warming in spring appeared to be an important factor for the vegetative bud formation and shoot growth. Thus, on sites prone to soil frost and low soil temperatures, forest management practices should be planned for a proper stand development. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65616
Appears in Collections: 影响、适应和脆弱性
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作者单位: Finnish Forest Research Institute, Joensuu Research Unit, P.O. Box 68, Joensuu, Finland
Recommended Citation:
Sutinen S.,Roitto M.,Repo T.. Vegetative buds, needles and shoot growth of Norway spruce are affected by experimentally delayed soil thawing in the field[J]. Forest Ecology and Management,2015-01-01,336