Fine Root Dynamics in Three Forest Types with Different Origins in a Subalpine Region of the Eastern Qinghai-Tibetan Plateau

Fine roots play a crucial role in plant survival potential and biogeochemical cycles of forest ecosystems. Subalpine areas of the Eastern Qinghai-Tibetan Plateau have experienced different forest re-establishment methods after clear-cutting primary forest. However, little is known about fine root dynamics of these forests originating from artificial, natural and their combined processes. Here, we determined fine root traits (biomass, production and turnover rate) of three subalpine forest types, i.e., Picea asperata Mast. plantation forest (artificial planting, PF), natural secondary forest (natural without assisted regeneration, NF) and P. asperata broadleaved mixed forest (natural regeneration after artificial planting, MF) composed of planted P. asperata and naturally regenerated native broadleaved species. At the soil depth of 0–30 cm, fine root biomass was the highest in PF and fine root production was the highest in NF, and both were the lowest in MF. Fine root dynamics of the three forest types tended to decrease with soil depth, with larger variations in PF. Fine root biomass and production were the highest in PF in 0–10 cm soil layer but were not significantly different among forest types in the lower soil layers. There were positive correlations between these parameters and aboveground biomass across forest types in soil layer of 0–10 cm, but not in the lower soil layers. Fine root turnover rate was generally higher in mixed forests than in monocultures at all soil depths. In conclusion, the natural regeneration procedure after clear-cutting in the subalpine region of western Sichuan seems to be superior from the perspective of fine root dynamics.

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Quantity and distribution of fine root biomass in the intermediate stage of beech virgin forest Badínsky prales

Journal of Forest Science ◽

10.17221/31/2009-jfs ◽

2009 ◽

Vol 55 (No. 11) ◽

pp. 502-510 ◽

Cited By ~ 3

Author(s):

P. Jaloviar ◽

L. Bakošová ◽

S. Kucbel ◽

J. Vencurik

Keyword(s):

Root Length ◽

Root Biomass ◽

Fine Root ◽

Soil Depth ◽

Mineral Soil ◽

Soil Layer ◽

Intermediate Stage ◽

Fine Root Biomass ◽

Virgin Forest ◽

Fine Root Length

The fine root biomass represents 3,372 kg/ha in the intermediate stage of the beech virgin forest with different admixture of goat willow, where the vast majority of this biomass is located in the uppermost mineral soil layer 0–10 cm. The variability of the fine root biomass calculated from 35 sample points represents approximately 90% of the mean value and reaches the highest value within the humus layer. The total fine root length investigated in 10 cm thick soil layers decreases with increasing soil depth. A significant linear relationship between the fine root length (calculated per 1 cm thick soil layer and 1 m<sup>2</sup> of stand area) and the soil depth was confirmed, although the correlation is rather weak. The number of root tips decreases with increasing soil depth faster than the root length. As the number of tips per 1 cm of root length remains in the finest diameter class without significant changes, the reason is above all a decreased proportion of the finest root class (diameter up to 0.5 mm) from the total fine root length within the particular soil layer.

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Effects of clear-cutting on nitrogen leaching and fine root dynamics in a cool-temperate forested watershed in northern Japan

Forest Ecology and Management ◽

10.1016/j.foreco.2006.01.001 ◽

2006 ◽

Vol 225 (1-3) ◽

pp. 257-261 ◽

Cited By ~ 51

Author(s):

Karibu Fukuzawa ◽

Hideaki Shibata ◽

Kentaro Takagi ◽

Mutsumi Nomura ◽

Noriko Kurima ◽

...

Keyword(s):

Fine Root ◽

Nitrogen Leaching ◽

Forested Watershed ◽

Root Dynamics ◽

Fine Root Dynamics ◽

Clear Cutting ◽

Cool Temperate ◽

Northern Japan

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Spatial and Temporal Variation in Fine Root Biomass, Productivity and Turnover in Shorea Robusta Along the Gradient of Tree Girth Size

10.21203/rs.3.rs-930732/v1 ◽

2021 ◽

Author(s):

Rachita Pandey ◽

Surendra Singh Bargali ◽

Kiran Bargali

Keyword(s):

Fine Roots ◽

Root Biomass ◽

Fine Root ◽

Soil Depth ◽

Winter Season ◽

Fine Root Biomass ◽

Spatial And Temporal Variation ◽

Root Dynamics ◽

Bottom Line ◽

The Impact

Abstract Fine roots (≤ 2 mm of diameter) contribute diminutive fractions of the overall tree biomass but are highly zestful and functionally remarkable component for assessing forest carbon and nutrient budgets. This study assessed how tree girth influenced fine root biomass (FRB), production (FRP) and turnover rate (FRT) in sub tropical sal forest.Four sites (S1, S2, S3, S4) were established in the bhabhar region of Nainital district, Uttarakhand, India within an elevational range of 405m and 580m. On the basis of girth size, sal trees were categorized in five girth size classes. Fine roots were sampled seasonally to a depth of 60 cm and divided into 3 layers (0-20, 20-40 and 40-60 cm).FRB was significantly affected by tree girth size (p< 0.05) while FRP and FRT showed insignificant effect. FRB was higher in lower girth classes (A-C) as compared to higher girth classes (D-E).Seasonal variation of FRB in all girth sizes showed a keen resemblance as the standing FRB reached pinnacle during rainy season and reached bottom-line in the winter season. Maximum FRB was reported for uppermost organo-mineralic soil depth (0-20 cm) at 1 m distance from tree bole and decreased with increasing soil depth and distance from tree bole while FRT showed a reverse trend. The present study will provide a holistic outlook on variations in FRB, FRP and FRT and the impact of edaphic characteristics and tree girth on fine root dynamics with respect to the studied forest stands.

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Fine root dynamics responses to nitrogen addition depend on root order, soil layer, and experimental duration in a subtropical forest

Biology and Fertility of Soils ◽

10.1007/s00374-019-01386-3 ◽

2019 ◽

Vol 55 (7) ◽

pp. 723-736 ◽

Cited By ~ 1

Author(s):

Wenjuan Wang ◽

Qifeng Mo ◽

Xiaoge Han ◽

Dafeng Hui ◽

Weijun Shen

Keyword(s):

Fine Root ◽

Soil Layer ◽

Nitrogen Addition ◽

Subtropical Forest ◽

Root Dynamics ◽

Fine Root Dynamics ◽

Root Order

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Fine‐root dynamics vary with soil depth and precipitation in a low‐nutrient tropical forest in the Central Amazonia

Plant-Environment Interactions ◽

10.1002/pei3.10010 ◽

2020 ◽

Vol 1 (1) ◽

pp. 3-16 ◽

Cited By ~ 1

Author(s):

Amanda L. Cordeiro ◽

Richard J. Norby ◽

Kelly M. Andersen ◽

Oscar Valverde‐Barrantes ◽

Lucia Fuchslueger ◽

...

Keyword(s):

Tropical Forest ◽

Fine Root ◽

Soil Depth ◽

Root Dynamics ◽

Fine Root Dynamics ◽

Central Amazonia

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Fine root dynamics in organic and mineral soil layers of Cryptomeria japonica D. Don plantation

Journal of Forest Research ◽

10.1007/s10310-016-0519-4 ◽

2016 ◽

Vol 21 (2) ◽

pp. 67-72 ◽

Cited By ~ 1

Author(s):

Yusuke Tawa ◽

Hiroshi Takeda

Keyword(s):

Cryptomeria Japonica ◽

Fine Root ◽

Mineral Soil ◽

Root Dynamics ◽

Fine Root Dynamics ◽

Soil Layers

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Root biomass of Fagus sylvatica L. stands depending on the climatic conditions

Folia Forestalia Polonica ◽

10.1515/ffp-2016-0025 ◽

2016 ◽

Vol 58 (4) ◽

pp. 220-227 ◽

Cited By ~ 1

Author(s):

Dorota Grygoruk

Keyword(s):

Fagus Sylvatica ◽

Fine Roots ◽

Root Biomass ◽

Fine Root ◽

Soil Layer ◽

Fine Root Biomass ◽

Climatic Conditions ◽

Forest Trees ◽

Soil Layers ◽

Fagus Sylvatica L

Abstract Fine root biomass of forest trees is a recognised indicator of environmental changes in the conditions of global climate change. The present study was carried out in six old-growth beech forests (112-140 years) located in different climatic conditions on the range border of Fagus sylvatica L. in Poland. The root biomass was investigated by soil coring method in the upper soil layers (0-5 cm, 5-15 cm and total layer 0-15 cm). The significantly greater total root biomass was found in the beech stands, which characterised by higher average precipitation and lower average annual temperatures in the period 2000-2005. The share of roots of diameter > 5 mm increased with increasing depth of top soils. Biomass of fine roots (diameter ≤ 2 mm) decreased with increasing depth of upper soil layers. The average biomass of fine roots ranged from 175.36 to 418.16 g m-2 in the soil layer 0-15 cm. The significant differences of fine root biomass were found between studied stands in the soil layers 0-5 cm and 0-15 cm. Also, it was found significant positive correlation between fine root biomass in the soil layer 0-15 cm and precipitation during the growing season in 2006. Precipitation in the study period was connected with very high rainfall in August 2006, repeatedly exceeding the long-term monthly levels. Regional climatic conditions, in that extreme weather events in growing seasons can significantly to affect changes of fine root biomass of forest trees, consequently, changes of relationships between the growth of above- and below-ground of the old-growth forest stands.

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