DOI: 10.1016/j.foreco.2016.05.045
Scopus记录号: 2-s2.0-84973462804
论文题名: Photosynthesis capacity of Quercus petraea (Matt.) saplings is affected by Molinia caerulea (L.) under high irradiance
作者: Vernay A. ; Balandier P. ; Guinard L. ; Améglio T. ; Malagoli P.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 376 起始页码: 107
结束页码: 117
语种: 英语
英文关键词: Competition
; Light
; Nitrogen
; Oak
; Photosynthesis
; Purple moor grass
; Regeneration
; Temperate forests
Scopus关键词: Carbon
; Competition
; Incident solar radiation
; Light
; Nitrogen
; Photosynthesis
; Reforestation
; Carbon assimilation
; Leaf photosynthesis
; Light availability
; Northern Hemispheres
; Photosynthetically active radiation
; Purple moor grass
; Regeneration
; Temperate forests
; Forestry
; deciduous tree
; grass
; growth
; interspecific competition
; irradiance
; light availability
; Northern Hemisphere
; nutrient uptake
; photosynthesis
; regeneration
; resource use
; sapling
; soil nitrogen
; temperate forest
; Molinia caerulea
; Quercus petraea
英文摘要: Molinia caerulea (L.) Moench is a well-known resource competitor to the detriment of tree regeneration in many boreal or temperate forests of the Northern hemisphere. This study aimed to investigate to what extent soil nitrogen uptake in interaction with light availability drives the early (i.e. in two months) establishment of competition between oak (Quercus petraea (Matt.) Liebl.) and M. caerulea saplings. Two-year-old oak was grown in a greenhouse in 20 L pots, either alone or in combination with M. caerulea, at two irradiance levels (11% and 55% of incident photosynthetically active radiation, iPAR). Leaf photosynthesis measurements and soil 15N-labeling were used to monitor changes in carbon assimilation and soil nitrogen uptake between and within species under well-watered conditions. Presence of M. caerulea had no significant effect on short-term oak sapling growth regardless of irradiance availability level. However, under 55% iPAR, M. caerulea had higher nitrogen uptake and photosynthesis capacity, whereas sessile oak grown with M. caerulea under 55% iPAR showed the same N uptake and a strong decrease in photosynthesis capacity compared to 11% iPAR. The findings reported here point to a very short-term response of photosynthesis and N uptake in a mixture of M. caerulea - oak saplings under 55% iPAR), which might partly result from greater nitrogen uptake by M. caerulea. © 2016 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64801
Appears in Collections: 影响、适应和脆弱性
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作者单位: Clermont Université, Université Blaise Pascal, UMR547 PIAF, Clermont-Ferrand, France; INRA, UMR547 PIAF, Clermont-Ferrand, France; Irstea, Research Unit on Forest Ecosystems (EFNO), Domaine des Barres, Nogent-sur-Vernisson, France
Recommended Citation:
Vernay A.,Balandier P.,Guinard L.,et al. Photosynthesis capacity of Quercus petraea (Matt.) saplings is affected by Molinia caerulea (L.) under high irradiance[J]. Forest Ecology and Management,2016-01-01,376