Effects of Manganese in Solution Culture on the Growth of Five Deciduous Broad-Leaved Tree Species with Different Successional Characters from Northern Japan

1999 ◽  
Vol 36 (1-2) ◽  
Author(s):  
M. Kitao ◽  
T.T. Lei ◽  
T. Koike
Keyword(s):  
Tree Species ◽  
Solution Culture ◽  
Northern Japan

scholarly journals The Damage of Deicing Salt on Two Spruce Tree Species Planted along Roadsides in Northern Japan

2005 ◽  
Vol 60 (6) ◽  
pp. 1113-1115 ◽  
Author(s):  
Masazumi KAYAMA ◽  
Ali M. QUORESHI ◽  
Yoshinori KITAHASHI ◽  
Yasunori NAKAGAWA ◽  
Yasuaki SAKAMOTO ◽  
...  
Keyword(s):  
Tree Species ◽  
Deicing Salt ◽  
Northern Japan

Factors influencing early vegetation establishment following soil scarification in a mixed forest in northern Japan

2005 ◽  
Vol 35 (1) ◽  
pp. 175-188 ◽  
Author(s):  
Toshiya Yoshida ◽  
Yoko Iga ◽  
Megumi Ozawa ◽  
Mahoko Noguchi ◽  
Hideaki Shibata
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Tree Species ◽  
Mixed Forest ◽  
Canopy Cover ◽  
Total Density ◽  
Dwarf Bamboo ◽  
Negative Effects ◽  
Tall Tree ◽  
Northern Japan

Scarification is widely conducted in northern Japan to remove understory dwarf bamboo species in degraded forests for replacement with tree species. To explore ways to enhance species diversity and restoration of mixed forest at the treated site, we clarified the mechanisms that lead to compositional heterogeneity of plant species. We evaluated the relative importance of environmental factors (scarification properties, soil properties, light conditions, litter cover, and presence of canopy trees) for the demography of tall tree species (emergence, mortality, and growth) and whole vegetation structure (species diversity and composition) over the two growing seasons immediately following scarification. Of tall tree species, Betula spp. were dominant (60% in total density), followed by Abies sachalinensis (Fr. Schm.) Masters, Acer mono Maxim., and Phellodendron amurense Rupr. Light intensity was an important factor, having mostly negative effects on the demography of these species. Soil factors (e.g., nitrogen content, moisture) affected the demography mainly of shade-intolerant or hygrophilous species. In general, extreme environmental conditions led to the dominance of grasses, forbs, and lianas rather than tall trees. Maintenance of canopy cover, which limits light and supplies seeds as well as litter, proved to be most important in promoting plant species diversification on the scarification site.

scholarly journals Regeneration Dynamics on Treefall Mounds and Pits for 10 Years after a Windfall in a Natural Mixed Forest

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1064
Author(s):  
Toshiya Yoshida
Keyword(s):  
Light Intensity ◽  
Tree Species ◽  
Mineral Soil ◽  
Mixed Forest ◽  
Light Conditions ◽  
Soil Exposure ◽  
Negative Effect ◽  
Intense Light ◽  
Strong Winds ◽  
Northern Japan

The treefall mounds and pits resulting from uprooting caused by strong winds is an indispensable microtopography for the regeneration of many tree species through improved light conditions and mineral soil exposure. These microtopographies are expected to become more important because global warming is predicted to increase windstorm frequency. This study aimed to clarify the characteristics of mounds and pits that contribute to the early establishment of major tree species in a natural mixed forest of northern Japan. The 39 tip-up mounds caused simultaneously by a strong typhoon in September 2004 were selected. In 2006, light intensity and soil moisture contents were measured in each mound and pit. Seedlings of all tree species were counted, and in 2014, the height of saplings was measured. The initial seedling density, regardless of tree species, was significantly higher in the pits than on the mound, but the density at the 10-th growing season decreased significantly in the pits and was comparable between the two locations. Intense light conditions favor regeneration of Betula sp. (Betula platyphylla and B. ermanii). In contrast, for Abies sachalinensis and Picea glehnii, the light intensity had a negative effect, so it was concluded that regeneration of conifers would be limited under the condition where strong winds form large gaps.

Responses of Four Australian Tree Species to Toxic Concentrations of Copper in Solution Culture

2006 ◽  
Vol 29 (6) ◽  
pp. 1127-1141 ◽  
Author(s):  
S. M. Reichman ◽  
N. W. Menzies ◽  
C. J. Asher ◽  
D. R. Mulligan
Keyword(s):  
Tree Species ◽  
Solution Culture ◽  
Toxic Concentrations

Variation in seed production among years and among individuals in 11 broadleaf tree species in northern Japan

2008 ◽  
Vol 13 (2) ◽  
pp. 83-88 ◽  
Author(s):  
Michiyasu Yasaka ◽  
Mika Takiya ◽  
Ichiro Watanabe ◽  
Yasuyuki Oono ◽  
Norio Mizui
Keyword(s):  
Seed Production ◽  
Tree Species ◽  
Broadleaf Tree ◽  
Northern Japan
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