Early positive effects of tree species richness on soil organic carbon accumulation in a large-scale forest biodiversity experiment

2019 ◽  
Vol 12 (5) ◽  
pp. 882-893 ◽  
Author(s):  
Yin Li ◽  
Helge Bruelheide ◽  
Thomas Scholten ◽  
Bernhard Schmid ◽  
Zhenkai Sun ◽  
...  
Keyword(s):  
Species Richness ◽  
Organic Carbon ◽  
Leaf Litter ◽  
Tree Species ◽  
Root Biomass ◽  
Fine Root ◽  
Soil Depth ◽  
Fine Root Biomass ◽  
Positive Effects ◽  
Tree Species Richness

Abstract Aims Tree species richness has been reported to have positive effects on aboveground biomass and productivity, but little is known about its effects on soil organic carbon (SOC) accumulation. Methods To close this gap, we made use of a large biodiversity–ecosystem functioning experiment in subtropical China (BEF-China) and tested whether tree species richness enhanced SOC accumulation. In 2010 and 2015, vertically layered soil samples were taken to a depth of 30 cm from 57 plots ranging in tree species richness from one to eight species. Least squares-based linear models and analysis of variance were used to investigate tree diversity effects. Structural equation modeling was used to explore hypothesized indirect relationships between tree species richness, leaf-litter biomass, leaf-litter carbon content, fine-root biomass and SOC accumulation. Important Findings Overall, SOC content decreased by 5.7 and 1.1 g C kg−1 in the top 0–5 and 5–10 cm soil depth, respectively, but increased by 1.0 and 1.5 g C kg−1 in the deeper 10–20 and 20–30 cm soil depth, respectively. Converting SOC content to SOC stocks using measures of soil bulk density showed that tree species richness did enhance SOC accumulation in the different soil depths. These effects could only to some extent be explained by leaf-litter biomass and not by fine-root biomass. Our findings suggest that carbon storage in new forests in China could be increased by planting more diverse stands, with the potential to contribute to mitigation of climate warming.

scholarly journals Positive effects of tree species richness on fine-root production in a subtropical forest in SE-China

2017 ◽  
Vol 10 (1) ◽  
pp. 146-157 ◽  
Author(s):  
Zhenkai Sun ◽  
Xiaojuan Liu ◽  
Bernhard Schmid ◽  
Helge Bruelheide ◽  
Wensheng Bu ◽  
...  
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
Fine Root ◽  
Subtropical Forest ◽  
Root Production ◽  
Fine Root Production ◽  
Positive Effects ◽  
Tree Species Richness ◽  
Se China

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

2009 ◽  
Vol 55 (No. 11) ◽  
pp. 502-510 ◽  
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.

scholarly journals Effect of Altitude on Nutrient Concentration, Nutrient Stock and Uptake in Fine Root of Sal (Shorea Robusta Gaertn.) Forest in Terai and Hill Areas of Eastern Nepal

2020 ◽  
Vol 25 (1) ◽  
pp. 24-29
Author(s):  
Krishna Prasad Bhattarai ◽  
Tej Narayan Mandal ◽  
Tilak Prasad Gautam
Keyword(s):  
Fine Roots ◽  
Root Biomass ◽  
Nutrient Concentration ◽  
Nutrient Dynamics ◽  
Fine Root ◽  
Soil Depth ◽  
Fine Root Biomass ◽  
Root Production ◽  
Nutrient Stock ◽  
Sal Forest

The present study was conducted to understand the effect of altitude on the nutrient concentration, nutrient stock, and uptake in the fine root of the Terai Sal forest (TSF) and Hill Sal forest (HSF) in eastern Nepal. Annual mean fine root biomass in 0-30 cm soil depth was found higher in HSF (6.27 Mg ha-1) than TSF (5.05 Mg ha-1). Conversely, fine root production was higher in TSF (4.8 Mg ha-1 y-1) than HSF (4.12 Mg ha-1 y-1). Nitrogen, phosphorus, and potassium content in fine roots were slightly higher in TSF than HSF. Nutrient concentration in fine roots of smaller size (<2 mm diameter) was nearly 1.2 times greater than that of larger size (2–5 mm diameter) in both forests. In HSF total stock of different nutrients (kg ha-1) in fine root was 55.62 N, 4.99 P, and 20.15 K whereas, these values were 49.49 N, 4.14 P, and 19.27 K only in TSF. However, total nutrient uptake (kg ha-1y-1) by fine root (both size classes) was greater in TSF (48.5 N, 4.3 P, and 18.6 K) than HSF (36.9 N, 3.3 P, and 13.5 K). The variability in fine root nutrient dynamics between these two forests was explained by the differences in fine root biomass and production which were influenced by the combined effect of varied altitude and season. The fine root, as being a greater source of organic matter, the information on its nutrient dynamics is inevitable for the management of soil nutrients in the forest ecosystem.

Does species richness affect fine root biomass and production in young forest plantations?

Oecologia ◽  
2014 ◽  
Vol 177 (2) ◽  
pp. 581-594 ◽  
Author(s):  
Timo Domisch ◽  
Leena Finér ◽  
Seid Muhie Dawud ◽  
Lars Vesterdal ◽  
Karsten Raulund-Rasmussen
Keyword(s):  
Species Richness ◽  
Root Biomass ◽  
Fine Root ◽  
Fine Root Biomass ◽  
Forest Plantations ◽  
Young Forest

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

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.

scholarly journals Variation in carbon stock in litterfall, fine root and soil in Sal (Shorea robusta Gaertn.) forests of eastern Nepal

Our Nature ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 68-73 ◽  
Author(s):  
Krishna Prasad Bhattarai ◽  
Tej Narayan Mandal
Keyword(s):  
Carbon Dioxide ◽  
Organic Carbon ◽  
Carbon Stock ◽  
Atmospheric Carbon Dioxide ◽  
Fine Root ◽  
Soil Depth ◽  
Global Climate ◽  
Fine Root Biomass ◽  
Organic Carbon Concentration ◽  
Sal Forest

Global climate change is a major problem generated by increasing concentration of carbon dioxide in the atmosphere. Forests and their soils are major sink of carbon and thus constitute an effective role in the global carbon cycle. Present study was conducted to quantify and compare the amount of carbon stock in litterfall, fine root and soil between Tarai Sal forest and Hill Sal forest of eastern Nepal. Carbon stock in litter and fine root was estimated by ash content method and in soil by multiplying the value of soil organic carbon, bulk density and soil depth. Carbon stock in litterfall was higher (3.94 Mg ha-1) in TSF than HSF (3.26 Mg ha-1) and in fine root (0-5 mm size) in 0-30 cm soil depth it was higher in HSF (2.76 Mg ha-1) than TSF (2.19 Mg ha-1). In soil (0-30 cm depth) the value was higher in HSF (58.23 Mg ha-1) than TSF (50.81Mg ha-1). Tarai Sal forest accumulated higher carbon stock in the litterfall and lower in fine root than Hill Sal forest which was mainly attributed to the amount of litterfall and fine root biomass rather than organic carbon concentration. In Tarai Sal forest the carbon stock in soil was relatively low than Hill Sal forest that may be due to the higher net uptake and mineralization of carbon in the situation of higher growth rate of plant. These outcomes verified that the forest plays important role for mitigation of global warming by storing the atmospheric carbon dioxide in plant parts and the soil. So, it concludes that conserving the considerable quantity of carbon in forests is inevitable for proper forest management.

Forest fine root biomass and soil CNP stoichiometry across three different biogeographical regions in Croatia

2021 ◽  
Author(s):  
Maša Zorana Ostrogović Sever ◽  
Doroteja Dimoski ◽  
Mislav Anić ◽  
Hrvoje Marjanović
Keyword(s):  
Air Temperature ◽  
Root Biomass ◽  
Fine Root ◽  
Forest Type ◽  
Soil Depth ◽  
Fine Root Biomass ◽  
Soil Parameters ◽  
Mineral Layer ◽  
Biogeographical Regions ◽  
The Mediterranean

&lt;p&gt;Fine root biomass (FRB) is a small but important forest ecosystem pool due to its direct role in ecosystem functioning through belowground carbon and soil nutrient cycling. At the global scale there is evidence that FRB correlates with meteorological parameters, e.g. precipitation and air temperature. Moving from global to regional and local scales other environmental parameters, primarily related to site soil characteristics, become more important.&lt;br&gt;In this research, we investigated which soil parameters are important as drivers of fine root biomass in three different biogeographical regions in Croatia, namely the Continental, the Alpine and the Mediterranean. &amp;#160;We collected data on soil and site characteristics at 242 locations. Soil parameters include bulk density, texture, pH and C, N and P content, while site parameters were latitude, longitude, elevation, precipitation, air temperature and forest type (Coniferous, Broadleaves, and Maquis/Garigues). Fine root biomass was estimated from soil samples collected at 2-8 positions at each location. Soil was sampled down to 30 cm depth in the mineral layer with a split-tube sampler, and analysed for three depths, i.e. 0-10 cm, 10-20 cm, and 20-30 cm depth.&lt;br&gt;Across entire dataset, FRB was affected by precipitation, elevation, forest type, soil depth, and soil C/P and N/P relations. Moving down to each biogeographical region separately, a stronger effect of soil phosphorus was observed for the Mediterranean region.&lt;/p&gt;

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