Biomass production and distribution of roots in three stands of Populus deltoides

Puri, Sunil; Singh, Virendra; Bhushan, Bharat; Singh, Singam Suranjoy

doi:10.1016/0378-1127(94)90165-1

Cited by 83 publications

(57 citation statements)

References 22 publications

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“…Puri et al [23] reported a similar relationship between root biomass and aboveground biomass for Eastern cottonwood. They also found differences in coarse root (>5 mm) biomass ha ).…”

Section: Discussionmentioning

confidence: 73%

“…Thus, the stumps did not have taproots and most of the lateral roots were found between 5 and 30 cm below ground level. The mean root length of the course (≥50 mm) roots was 6.71 m. In a study of Populus deltoides (Eastern cottonwood) the coarse root length was found to be 3.4-4.8 m [23]. They also reported that the maximum coarse root biomass was found in the top 30 cm of the soil profile.…”

Section: Discussionmentioning

confidence: 96%

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Stump and Root Biomass of Poplar Stands

Johansson

Hjelm

2012

Forests

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Abstract:Today there is an increasing demand for biomass for use in energy production. In this study we investigated stumps and roots from six poplar (Populus sp.) stands growing on former farmland in Sweden, situated between latitudes 55 and 60°N. The mean age of the poplar was 20 years (range 16-23), the mean stand density 1151 stems ha −1 (range 361-3279), and the mean diameter at breast height (over bark) 288 mm (range 81-574). All poplar stands were on clay soils (light and medium clay and light clay tills).The mean dry mass weight of the 72 excavated stumps was 45 ± 39 kg (range 1-185), with the roots ≥ 50 mm weighing 14 ± 16 kg (range 0.2-87). Dry mean stump weight represented 21% (by dry weight) of the stem. The mean total dry weight per hectare for stumps amounted to 34.9 ± 21.8 (range 12.9-66.9) tons and the equivalent value for roots was 12.0 ± 9.6 (range 4.7-10.9) tons. The excavation of below-ground biomass can either focus on the stump or the stump and parts of the root system. Depending on the combination of soil type and soil moisture the weight of soil adhering to stumps and the cleaning requirements will vary.

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“…Puri et al [23] reported a similar relationship between root biomass and aboveground biomass for Eastern cottonwood. They also found differences in coarse root (>5 mm) biomass ha ).…”

Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 96%

Stump and Root Biomass of Poplar Stands

Johansson

Hjelm

2012

Forests

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“…In the case of Poplar, few studies like, Puri et al (1994), Fang et al (2007) and McIvor et al (2009) explored 0.3 m, 1.0 m and 1.4 m depth, respectively. However, in the present study, excavation was extended to 3.0 m depth since roots were observed up to 2.4 m to 2.8 m during coring.…”

Section: Root Harvesting Depthmentioning

confidence: 99%

“…Contrary to this, these two varied with change in direction as well in the present study (Populus euramericana I-214). Although Smith (2001) and Kalliokoski et al (2008) observed strong assumption of symmetrical dimension of root system, Puri et al (1994) and McIvor et al (2009) recorded highly asymmetric roots in poplar and other species owing to the effect of non-symmetrical mechanical stress and heterogeneous nutrient availability in soil (Coutts et al, 1999;Casper et al, 2003).…”

Section: Root Orientation and Growthmentioning

confidence: 99%

Root Structure and Belowground Biomass of Hybrid Poplar in Forestry and Agroforestry Systems in Mediterranean France

Jha

2017

Not Sci Biol

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In poplar, one of the most used species of forestry and agroforestry, below ground biomass allocation plays an important role in providing anchorage as well as efficient nutrient and water distribution channel. Available literature on this aspect is not enough in hybrid Poplar, Populus euramaricana I-214. Therefore, the study was aimed at finding how this species developed its root system and how much belowground biomass was allocated in Forest System (FRS) and Agroforest System (AFS). This was done using soil excavation and root coring methods. Coarse roots were distributed in all directions but their number and proximal cross section area (CSA) were not uniform. In the case of AFS tree maximum CSA was distributed in the south and south-west direction while in FRS it was in the north-east and south-east direction. Fine roots were observed throughout the rooting zone along with coarse and medium roots up to a maximum depth of 2.4 m in FRS and 2.8 m in AFS. Total belowground biomass was higher in AFS tree (130 kg tree -1 ) than FRS tree (120 kg tree -1 ). But on hectare basis FRS accumulated (24.5 Mg ha ). However, if practiced in surplus agriculture area and considered the system as a whole, AFS allows grain production in lieu of some biomass deficit.

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“…The excavation was initially started around the stem to locate the roots, and then excavation was carefully performed along the roots (Puri et al 1994). A small hand spade was used for root excavation, and hand excavation was performed to avoid destruction of the roots.…”

Section: Complete Excavation Of Plantsmentioning

confidence: 99%

Vertical and lateral uprooting resistance of Salix matsudana Koidz in a riparian area

Liu

Jia

et al. 2013

The Forestry Chronicle

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Root morphological characteristics of Salix matsudana Koidz were studied using a complete excavation method. In-situ vertical and lateral uprooting tests were carried out on plants in a riparian zone to evaluate the soil-reinforcing ability of plant roots and flow resistance. Results show that the maximum uprooting force was positively correlated with stem basal diameter in both vertical and lateral uprooting tests. Resistance to uprooting was also significantly positively correlated with plant height, total number of roots, cross-sectional areas (CSA) of all roots at base and root mass. Unlike vertical uprooting, taproots made a larger contribution to lateral uprooting, which was positively correlated with the uprooting resistance.Keywords: root anchorage, uprooting resistance, Salix matsudana, riparian zone RÉSUMÉLes caractéristiques morphologiques des racines du Salix matsudana Koidz ont été étudiées en procédant à l' excavation complète des arbres. Des tests in situ de déracinement vertical et latéral ont été réalisés sur des arbres situés en zone riparienne afin d' évaluer la capacité des racines des plantes à renforcer le sol et la résistance à l' écoulement. Les résultats démontrent que la force maximale de déracinement était positivement corrélée au diamètre de la souche de l'arbre tant pour les tests de déracinement vertical que latéral. La résistance au déracinement était également corrélée de façon positive et significative à la hauteur de l'arbre, au nombre total de racines, à la section transversale (CSA) de toutes les racines sous la souche et à la masse racinaire. Contrairement au déracinement vertical, les racines pivotantes ont contribué de façon plus importante au déracinement latéral, lequel était corrélé positivement à la résistance au déracinement.

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Biomass production and distribution of roots in three stands of Populus deltoides

Cited by 83 publications

References 22 publications

Stump and Root Biomass of Poplar Stands

Stump and Root Biomass of Poplar Stands

Root Structure and Belowground Biomass of Hybrid Poplar in Forestry and Agroforestry Systems in Mediterranean France

Vertical and lateral uprooting resistance of Salix matsudana Koidz in a riparian area

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