Impact of leaf removal on initial survival and growth of container-grown and bare-root seedlings of Hinoki cypress (Chamaecyparis obtusa)

Yamashita, Naoko; Okuda, Shiro; Suwa, Rempei; Lei, Thomas T.; Tobita, Hidetaka; Utsugi, Hajime; Kajimoto, Tetsuya

doi:10.1016/j.foreco.2016.03.054

Cited by 18 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These extracted seedlings were thoroughly cleaned from soil and other debris, their needles were removed, and they were divided into main stem and root. Root and stem parts were oven-dried for 72 hours at 70°C as suggested by Yamashita et al (2016). Next, they were weighed with a precision balance, and consequently, dry stem and root mass of the seedlings were obtained at age five.…”

Section: Measurements and Analysismentioning

confidence: 99%

Effects of Canopy Structure on Growth and Belowground/Aboveground Biomass of Seedlings in Uneven-Aged Trojan Fir Stands

Kara

Topaçoğlu

2018

CERNE

View full text Add to dashboard Cite

Effects of canopy structure on growth and belowground/ aboveground biomass of seedlings in uneven-aged trojan fi r stands. CERNE, v. 24, n. 4, p. 312-322, 2018. HIGHLIGHTS The light transmitted through the canopy was the most signifi cant predictor of understory seedlings growth in uneven-aged Trojan fi r stands. Light reaching understory can accelerate the development of sub-canopy layers in unevenaged Trojan fi r stands. Complete canopy closure should be avoided even in stands of shade-tolerant species such as Trojan fi r.

show abstract

Section: Measurements and Analysismentioning

confidence: 99%

Effects of Canopy Structure on Growth and Belowground/Aboveground Biomass of Seedlings in Uneven-Aged Trojan Fir Stands

Kara

Topaçoğlu

2018

CERNE

View full text Add to dashboard Cite

show abstract

“…These two species have different growth requirements in the early stage of their life. Weed growth is also highly significant for the interception and disturbance during the growth season of these natural regeneration areas (Yamashita et al 2016). Unfavourable growth conditions, bad seed years, competition due to weeds and/or other unwanted plant species lead foresters to treat the regeneration with artificial supplementation if it is necessary (Tappeiner 1969).…”

Section: Discussionmentioning

confidence: 99%

Impact of silvicultural system on natural regeneration in Western Himalayan moist temperate forests of Pakistan

Iqbal¹

2021

J. For. Sci.

View full text Add to dashboard Cite

Site conditions (topography, aspect, moisture availability, humus thickness, light exposure, and grazing activities) play a vital role in the germination and regeneration process. The research was conducted in the Himalayan moist temperate forest. The research site was divided based on the silvicultural system (group selection system and single-tree selection system) into 148 plots and 150 plots, respectively. The group selection system was examined on the site of 2 ha which was clear-felled under a project in the 1980's. The present study examined the impact of silvicultural systems on regeneration. The frequency table was used, and relative frequency was calculated for the species and silvicultural system, density per m2 was also calculated. Diversity indices were calculated through taxa, dominance, Simpson’s index, Shannon index, evenness, equitability, and fisher alpha. Ten taxa were found in both silvicultural systems, with individual repetition of 17 and 15 taxa, respectively. Group selection is more compact visibly as compared to the single-tree selection system. The single-tree selection system is more diversified in species composition, stand structure, moisture availability, and less humus availability. The study also highlights future predictions for the conservation of these forests, which are highly sensitive and a hotspot for wildlife and climate change phenomena. Silvicultural practices such as silvicultural system, cleaning, weeding, thinning operations are regularly practiced, which can reduce the negative impact on these productive forests.

show abstract

“…In addition, because the period of little precipitation (< 5 mm a day: 4.5 mm for 1 day, and 0.5 mm for 3 days) was prolonged for ≈ 1.5 months with high temperatures in the summer of 2021 (Japan Meteorological Agency 2021), soil drought stress would have been severe during this period. The low T/R ratio under soil compaction without weeding can alleviate soil drought stress (Yamashita 2016, Harayama et al 2021). Overall, the current results indicated the potentially dry condition under no soil compaction and weeding conditions, probably leading to similar growth performances between soil compaction and no soil compaction conditions.…”

Section: Responses Of a Sachalinensis Seedlings To Competition Can Va...mentioning

confidence: 99%

Effects of soil compaction and vegetation weeding on the above-, and belowground growth of boreal evergreen conifer seedlings

Sugai

Harayama

Tobita

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

If the soil compaction by the running of forestry machines does not suppress the growth of planted seedlings, this operation may be an alternative method to conventional weeding to control vegetation competition. To evaluate the effects of soil compaction and the weeding of vegetation on seedlings of three boreal evergreen coniferous species, the field experiment was conducted for two years. Under weeding conditions, the main target species, Abies sachalinensis seedlings with thick fine roots showed relatively robust belowground growth under soil compaction rather than the other Picea species with thin fine roots. The soil compaction suppressed the density and height of vegetation, mitigating the light conditions. In A. sachalinensis seedings, leaf mass per area, nitrogen content per leaf area, and specific root length of fine roots significantly respond to the weeding treatment without soil compaction. No weeding suppressed the relative growth rate in root collar diameter and aboveground volume, while these changes were not observed under soil compaction. Both the results of light conditions and the responses of seedlings indicated that the competitive conditions were weakened by soil compaction. These results suggested that when planting the functional type with thicker fine roots, such as A. sachalinensis, the machine running may contribute to the forest vegetation management.

show abstract

Impact of leaf removal on initial survival and growth of container-grown and bare-root seedlings of Hinoki cypress (Chamaecyparis obtusa)

Cited by 18 publications

References 26 publications

Effects of Canopy Structure on Growth and Belowground/Aboveground Biomass of Seedlings in Uneven-Aged Trojan Fir Stands

Effects of Canopy Structure on Growth and Belowground/Aboveground Biomass of Seedlings in Uneven-Aged Trojan Fir Stands

Impact of silvicultural system on natural regeneration in Western Himalayan moist temperate forests of Pakistan

Effects of soil compaction and vegetation weeding on the above-, and belowground growth of boreal evergreen conifer seedlings

Contact Info

Product

Resources

About