Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.11.043 |
Root system origin and structure influence planting shock of black spruce seedlings in boreal microsites | |
Pernot, Clementine1; Thiffault, Nelson2; DesRochers, Annie1 | |
2019-02-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 433页码:594-605 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Planting shock can last for several years during which seedling growth may significantly slow down. This duration depends upon the time that is required for the root system to acclimatize to its new environment. We hypothesized that characteristics of the root system are important factors for black spruce (Picea mariana [Mill.] BSP) seedling establishment. To test this hypothesis, we compared growth and physiology of three stock types: containerized seedlings, with a dense initial root system restricted to the volume of a root plug; deeply planted containerized seedlings, with the stem buried during production to develop dense adventitious and initial root systems; and bareroot seedlings, with a less developed but unrestricted initial root system. The three stock types were planted on three microsites that are typical of reforestation sites found in eastern Canadian boreal forest: (1) bare mineral soil; (2) in presence of ericaceous shrubs; or (3) in presence of Sphagnum spp. and ericaceous species. Labelled nitrogen fertilizer was added to half of the seedlings to compare nitrogen uptake. We measured seedling growth (height, diameter, above- and belowground biomass), nutrition (including N-15 uptake) and C-13 discrimination (as an indicator of water stress) at the end of the second growing season. Except at the root level, there were few interactions between stock types and microsites. For fertilized microsites, we speculate that ericaceous species captured most added nutrients since seedlings that were planted directly on mineral soil had greater height and diameter increments than seedlings with competing vegetation. In unfertilized microsites, Sphagnum spp. and ericaceous species had significant negative effects on seedling growth. For stock type, the presence of a root plug allowed containerized and deeply planted seedlings to have a lower delta C-13, suggesting less water stress compared to bareroot seedlings. Strong initial root system development of containerized seedlings resulted in greater total biomass. We hypothesized that the presence of adventitious roots in deeply planted seedlings positively influenced nutrient uptake, particularly N. As nutrient availability is one of the most limiting factors in the boreal forest, we suggest using deeply planted containerized seedlings to reduce planting stress. |
英文关键词 | Black spruce Planting shock Adventitious root Initial root Containerized seedling Bareroot seedling Stock type |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456902500060 |
WOS关键词 | WHITE SPRUCE ; PICEA-MARIANA ; EARLY GROWTH ; ADVENTITIOUS ROOTS ; WATER-RELATIONS ; COMPETITION ; CONTAINER ; NUTRITION ; NITROGEN ; DROUGHT |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24243 |
专题 | 气候变化 |
作者单位 | 1.Univ Quebec Abitibi Temiscamingue, Inst Rech Forets, 341 Rue Principale Nord, Amos, PQ J9T 2L8, Canada; 2.Nat Resources Canada, Canadian Forest Serv, Canadian Wood Fibre Ctr, 1055 Rue PEPS, Quebec City, PQ G1V 4C7, Canada |
推荐引用方式 GB/T 7714 | Pernot, Clementine,Thiffault, Nelson,DesRochers, Annie. Root system origin and structure influence planting shock of black spruce seedlings in boreal microsites[J]. FOREST ECOLOGY AND MANAGEMENT,2019,433:594-605. |
APA | Pernot, Clementine,Thiffault, Nelson,&DesRochers, Annie.(2019).Root system origin and structure influence planting shock of black spruce seedlings in boreal microsites.FOREST ECOLOGY AND MANAGEMENT,433,594-605. |
MLA | Pernot, Clementine,et al."Root system origin and structure influence planting shock of black spruce seedlings in boreal microsites".FOREST ECOLOGY AND MANAGEMENT 433(2019):594-605. |
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