scholarly journals Relationships among Radial Growth of Cryptomeria japonica, Carbon Budget of a Forest Ecosystem, and Climate Factors in a Cool Temperate Zone

2021 ◽  
Vol 67 (3) ◽  
pp. 117-128
Author(s):  
Yu Hirano ◽  
Taku M. Saitoh ◽  
Eitaro Fukatsu ◽  
Hajime Kobayashi ◽  
Hiroyuki Muraoka ◽  
...  
Keyword(s):  
Forest Ecosystem ◽  
Cryptomeria Japonica ◽  
Radial Growth ◽  
Carbon Budget ◽  
Temperate Zone ◽  
Climate Factors ◽  
Cool Temperate

Divergent responses to climate factors in the radial growth of Larix sibirica in the eastern Tianshan Mountains, northwest China

Trees ◽  
2015 ◽  
Vol 29 (6) ◽  
pp. 1673-1686 ◽  
Author(s):  
Liang Jiao ◽  
Yuan Jiang ◽  
Wen-Tao Zhang ◽  
Ming-Chang Wang ◽  
Ling-Nan Zhang ◽  
...  
Keyword(s):  
Radial Growth ◽  
Northwest China ◽  
Tianshan Mountains ◽  
Larix Sibirica ◽  
Climate Factors ◽  
Eastern Tianshan

Effects of canopy phenology on deciduous overstory and evergreen understory carbon budgets in a cool-temperate forest ecosystem under ongoing climate change

2014 ◽  
Vol 30 (2) ◽  
pp. 267-277 ◽  
Author(s):  
Taku M. Saitoh ◽  
Shin Nagai ◽  
Jun Yoshino ◽  
Hiroaki Kondo ◽  
Ichiro Tamagawa ◽  
...  
Keyword(s):  
Climate Change ◽  
Forest Ecosystem ◽  
Temperate Forest ◽  
Carbon Budgets ◽  
Cool Temperate ◽  
Cool Temperate Forest ◽  
Temperate Forest Ecosystem

Effect of synthetic windbreaks on pasture growth in south-western Victoria, Australia

2002 ◽  
Vol 42 (6) ◽  
pp. 831 ◽  
Author(s):  
P. R. Bird ◽  
T. T. Jackson ◽  
K. W. Williams
Keyword(s):  
Field Experiments ◽  
Temperate Zone ◽  
Wire Mesh ◽  
Seasonal Effect ◽  
Total Production ◽  
Maximum Difference ◽  
Cool Temperate ◽  
The Mean ◽  
Western Victoria ◽  
The Impact

The impact of a synthetic windbreak on the growth of subterranean clover and perennial ryegrass pasture in the cool-temperate zone of south-western Victoria was investigated over 2 years. Four square plots (10 m sides) at each of 2 sites were fenced with wire mesh 1.2 m tall in 1996 and 1997. Two plots at each site were sheltered with synthetic mesh of 50% porosity attached to the wire mesh. The open wind speed averaged 3.6 m/s in 1996 and 3.1�m/s in 1997. Winds exceeded 6 m/s for 4–23% and 2–8% of the time in 1996 and 1997, respectively. There were small but significant differences in temperature between the sheltered and open plots. The mean daily temperature was 0–0.4°C warmer with shelter. Temperatures in the shelters were always higher from 0900 to 1800�hours, the differences ranging from 0.1 to 0.9°C. Conversely, lower temperatures (a maximum difference of 0.4°C) usually occurred in the shelters from 1800 to 0600 hours. The mean daily relative humidity was 1.4–3.1% greater in shelter than in the open and the maximum difference was 3.8%. There was a significant (P< 0.01) effect of shelter on pasture growth in both years. In terms of total production over both years, the results indicate a small but consistent increase in pasture growth of about 9% for sheltered v. open plots at both sites. There was a clear seasonal effect of shelter, with greater production in autumn–winter, and a trend towards greater production in open plots during very wet periods. The results indicate that responses of pasture plants to shelter in the cool-temperate zone of Australia may be modest, and difficult to determine in field experiments, but shelter should contribute significantly to animal production because of improved plant growth in times of scarcity and reduced expenditure of energy for maintenance. Artificial shelters may provide the best means of testing the likely response to shelter of other pasture species or crops.

scholarly journals Seasonal Variation of Soil Respiration in the Mongolian Oak (Quercus mongolica Fisch. Ex Ledeb.) Forests at the Cool Temperate Zone in Korea

Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 984
Author(s):  
Gyung Soon Kim ◽  
Seung Jin Joo ◽  
Chang Seok Lee
Keyword(s):  
Soil Respiration ◽  
Environmental Parameters ◽  
Field Measurements ◽  
Temperate Zone ◽  
Short Time Scale ◽  
Strongly Correlated ◽  
Quercus Mongolica ◽  
Cool Temperate ◽  
Mongolian Oak ◽  
Short Time

To investigate the variation in seasonal soil respiration (SR) as a function of soil temperature (Ts) and soil water content (SWC) in Mongolian oak (Quercus mongolica) forests in urban (Mt. Nam) and well-reserved (Mt. Jeombong) areas in South Korea, we conducted continuous field measurements of SR and other environmental parameters (Ts and SWC) using an automated chamber system. Overall, the SR rates in both stands were strongly correlated with the Ts variable during all seasons. However, abrupt fluctuations in SR were significantly related to episodic increases in SWC on a short time scale during the growing season. The integrated optimal regression models for SR using Ts at a depth of 5 cm and SWC at a depth of 15 cm yielded the following: the SR rate in Mt. Nam = SR(Ts) + ΔSR(Ts) = 104.87 exp(0.1108Ts) − 10.09(SWC)2 + 604.2(SWC) − 8627.7 for Ts ≥ 0 °C, and the SR rate in Mt. Jeombong = SR(Ts) + ΔSR(Ts) = 95.608 exp(0.1304Ts) − 33.086(SWC)2 + 1949.2(SWC) − 28499 for Ts ≥ 0 °C. In both cases, SR = 0 for Ts < 0 °C. As per these equations, the estimated annual total SRs were 1339.4 g C m−2 for Mt. Nam and 1003.0 g C m−2 for Mt. Jeombong. These values were quite similar to the measured values in field. Our results demonstrate that the improved empirical equation is an effective tool for estimating and predicting SR variability and provide evidence that the SR of Q. mongolica forests in the cool temperate zone of Korean Peninsula depends on Ts and SWC variables.

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