Drought acclimation of two deciduous tree species of different layers in a temperate forest canopy

Abstract. There exists observational evidence that gaseous elemental mercury (GEM) can be readily removed from the atmosphere via chemical oxidation followed by deposition in the polar and sub-polar regions, free troposphere, lower stratosphere, and marine boundary layer under specific environmental conditions. Here we report GEM depletions in a temperate mixed forest at Mt. Changbai, Northeast China. The strong depletions occurred predominantly at night during the leaf-growing season and in the absence of gaseous oxidized mercury (GOM) enrichment (GOM  <  3 pg m−3). Vertical gradients of decreasing GEM concentrations from layers above to under forest canopy suggest in situ loss of GEM to forest canopy at Mt. Changbai. Foliar GEM flux measurements showed that the foliage of two predominant tree species is a net sink of GEM at night, with a mean flux of −1.8 ± 0.3 ng m2 h−1 over Fraxinus mandshurica (deciduous tree species) and −0.1 ± 0.2 ng m2 h−1 over Pinus Koraiensis (evergreen tree species). Daily integrated GEM δ202Hg, Δ199Hg, and Δ200Hg at Mt. Changbai during 8–18 July 2013 ranged from −0.34 to 0.91 ‰, from −0.11 to −0.04 ‰ and from −0.06 to 0.01 ‰, respectively. A large positive shift in GEM δ202Hg occurred during the strong GEM depletion events, whereas Δ199Hg and Δ200Hg remained essentially unchanged. The observational findings and box model results show that uptake of GEM by forest canopy plays a predominant role in the GEM depletion at Mt. Changbai forest. Such depletion events of GEM are likely to be a widespread phenomenon, suggesting that the forest ecosystem represents one of the largest sinks ( ∼ 1930 Mg) of atmospheric Hg on a global scale.

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Application of a Three-Dimensional Radiative Transfer Model to Retrieve the Species Composition of a Mixed Forest Stand from Canopy Reflected Radiation

Remote Sensing ◽

10.3390/rs10101661 ◽

2018 ◽

Vol 10 (10) ◽

pp. 1661 ◽

Cited By ~ 2

Author(s):

Natalia Levashova ◽

Dmitry Lukyanenko ◽

Yulia Mukhartova ◽

Alexander Olchev

Keyword(s):

Solar Radiation ◽

Radiative Transfer ◽

Tree Species ◽

Forest Canopy ◽

Mixed Forest ◽

Three Dimensional ◽

Forest Stand ◽

Deciduous Tree ◽

Radiative Transfer Model ◽

Transfer Model

The paper introduces a three-dimensional model to derive the spatial patterns of photosynthetically active radiation (PAR) reflected and absorbed by a non-uniform forest canopy with a multi-species structure, as well as a model algorithm application to retrieve forest canopy composition from reflected PAR measured along some trajectory above the forest stand. This radiative transfer model is based on steady-state transport equations, initially suggested by Ross, and considers the radiative transfer as a function of the structure of individual trees and forest canopy, optical properties of photosynthesizing and non-photosynthesizing parts of the different tree species, soil reflection, and the ratio of incoming direct and diffuse solar radiation. Numerical experiments showed that reflected solar radiation of a typical mixed forest stand consisting of coniferous and deciduous tree species was strongly governed by canopy structure, soil properties and sun elevation. The suggested algorithm based on the developed model allows for retrieving the proportion of different tree species in a mixed forest stand from measured canopy reflection coefficients. The method accuracy strictly depends on the number of points for canopy reflection measurements.

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Purification of plasma membranes from leaves of conifer and deciduous tree species by phase partitioning and free-flow electrophoresis

Physiologia Plantarum ◽

10.1034/j.1399-3054.1995.950310.x ◽

1995 ◽

Vol 95 (3) ◽

pp. 399-408 ◽

Cited By ~ 1

Author(s):

Elena Toll ◽

Federico J. Castillo ◽

Pierre Crespi ◽

Michele Crevecoeur ◽

Hubert Greppin

Keyword(s):

Tree Species ◽

Plasma Membranes ◽

Free Flow ◽

Deciduous Tree ◽

Phase Partitioning

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Context-dependency of tree species diversity, trait composition and stand structural attributes regulate temperate forest multifunctionality

The Science of The Total Environment ◽

10.1016/j.scitotenv.2020.143724 ◽

2021 ◽

Vol 757 ◽

pp. 143724

Author(s):

Anvar Sanaei ◽

Arshad Ali ◽

Zuoqiang Yuan ◽

Shufang Liu ◽

Fei Lin ◽

...

Keyword(s):

Species Diversity ◽

Tree Species ◽

Temperate Forest ◽

Context Dependency ◽

Tree Species Diversity

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Spatial associations among major tree species in a cool-temperate forest community under heterogeneous topography and canopy conditions

Population Ecology ◽

10.1007/s10144-013-0363-8 ◽

2013 ◽

Vol 55 (2) ◽

pp. 261-275 ◽

Cited By ~ 5

Author(s):

Takeshi Torimaru ◽

Shinji Akada ◽

Kiyoshi Ishida ◽

Shuichi Matsuda ◽

Machiko Narita

Keyword(s):

Tree Species ◽

Temperate Forest ◽

Forest Community ◽

Spatial Associations ◽

Cool Temperate ◽

Cool Temperate Forest

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PAHs associated with the leaves of three deciduous tree species. I — Concentrations and profiles

Environmental Pollution ◽

10.1016/s0269-7491(99)00195-5 ◽

2000 ◽

Vol 108 (3) ◽

pp. 413-424 ◽

Cited By ~ 98

Author(s):

M Howsam ◽

K.C Jones ◽

P Ineson

Keyword(s):

Tree Species ◽

Deciduous Tree

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Possibilities of using deciduous tree species in trace element biomonitoring in an urban area (Plovdiv, Bulgaria)

Atmospheric Pollution Research ◽

10.5094/apr.2014.024 ◽

2014 ◽

Vol 5 (2) ◽

pp. 196-202 ◽

Cited By ~ 26

Author(s):

Slaveya Petrova ◽

Lilyana Yurukova ◽

Iliana Velcheva

Keyword(s):

Trace Element ◽

Urban Area ◽

Tree Species ◽

Deciduous Tree

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Differences between height- and light-dependent changes in shoot traits in five deciduous tree species

Oecologia ◽

10.1007/s00442-013-2744-2 ◽

2013 ◽

Vol 174 (1) ◽

pp. 1-12 ◽

Cited By ~ 9

Author(s):

Noriyuki Osada ◽

Yoshihiko Okabe ◽

Daisuke Hayashi ◽

Tomonori Katsuyama ◽

Naoko Tokuchi

Keyword(s):

Tree Species ◽

Deciduous Tree

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How anatomical and morphological characteristics affect the flexural properties of two angiosperm species at the sapling stage

BioResources ◽

10.15376/biores.15.3.5843-5858 ◽

2020 ◽

Vol 15 (3) ◽

pp. 5843-5858

Author(s):

Seray Özden Keleş

Keyword(s):

Tree Species ◽

Ring Width ◽

Morphological Characteristics ◽

Deciduous Tree ◽

Flexural Properties ◽

Functional Stability ◽

Growth Stability ◽

Fagus Orientalis Lipsky ◽

Angiosperm Species ◽

Common Oak

The sapling stage is an important phase due to maintaining plant growth, stability, and survival over the life cycle of trees. However, there are limited investigations in the literature related to both growth and stability of different tree species. This study thus investigated how different tree species at the sapling stage showed different anatomical, morphological, and flexural traits despite being of similar age and growing under the same environmental conditions. The variation of sapling properties was determined in two deciduous tree species: common oak (Quercus robur L.) and Oriental beech (Fagus orientalis Lipsky). The results of anatomical and morphological measurements showed that the highest average values of ray length, ray width, pith radius, pith%, bark%, and node numbers were obtained in oak saplings, whereas average ring width, number of rays, and wood% were found to be higher in beech saplings. Oak also exhibited better functional stability in its saplings. The flexural properties were almost 60% greater in oak stems than beech stems. The variations in flexural properties were explained by the morphological and anatomical traits since stability was positively correlated with pith radius, pith%, and bark% and negatively correlated with the number of rays and wood%.

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