Components and Nutrient Concentrations of Small-Diameter Woody Biomass for Energy

2013 ◽  
Vol 30 (3) ◽  
pp. 137-142 ◽  
Author(s):  
John M. Kabrick ◽  
John P. Dwyer ◽  
Stephen R. Shifley ◽  
Brandon S. O'Neil
Keyword(s):  
Small Diameter ◽  
Woody Biomass ◽  
Nutrient Concentrations ◽  
Biomass For Energy

scholarly journals Demonstration of the BioBaler harvesting system for collection of small-diameter woody biomass

2011 ◽  
Author(s):  
Matthew H Langholtz ◽  
Kevin R Caffrey ◽  
Elliott J Barnett ◽  
Erin Webb ◽  
Mark W Brummette ◽  
...  
Keyword(s):  
Small Diameter ◽  
Woody Biomass

Woody biomass for energy use will face rising scrutiny

2021 ◽  
Keyword(s):  
Energy Use ◽  
Woody Biomass ◽  
Wood Industry ◽  
Financial Flows ◽  
Content Type ◽  
Forestry Practices ◽  
Renewable Energy Generation ◽  
Green Label ◽  
By Products ◽  
Biomass For Energy

Significance There is an obvious tension between promoting forests to capture carbon and burning wood for energy. Increased demand risks unsustainable indirect changes of land use. However, modern forestry practices suggest woody biomass can be used sustainably, if forest eco-systems are well managed. Impacts Although it continues to carry a green label, debate over its sustainability may damage financial flows into the biomass sector. The sector focus on secondary and tertiary wood sources, as well as wood industry by-products, will increase. Woody biomass use for heat and power will make up a key part of renewable energy generation, particularly in heavily forested countries.

scholarly journals Annual Availability of Forest Biomass Resources for Woody Biomass Power Generation Plants from Subcompartments and Aggregated Forests in Tohoku Region of Japan

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 71
Author(s):  
Yusuke Matsuoka ◽  
Hiroaki Shirasawa ◽  
Uichi Hayashi ◽  
Kazuhiro Aruga
Keyword(s):  
Forest Biomass ◽  
Small Diameter ◽  
Wood Chip ◽  
Woody Biomass ◽  
Logging Residues ◽  
Biomass Resources ◽  
Supply Potential ◽  
Generation Capacity ◽  
Final Harvest

To utilize timber and forest biomass resources for bioenergy, technically feasible and economically viable timber and forest biomass resources should be estimated accurately considering their long-term availability. This study focuses on five prefectures, namely, Aomori, Iwate, Miyagi, Akita, and Yamagata, and considers trade between these prefectures. The annual availability of timber and forest biomass resources, such as small-diameter or defect stem logs, rather than logging residues in Japan was estimated as supply potential from profitable forests where expected revenues surpassed all costs, from planting to final harvest. As a result, the supply potential and annual availability of timber were estimated at 11,388,960 m3/year and 1,631,624 m3/year, whereas those of forest biomass resources were estimated at 2,277,792 m3/year and 326,325 m3/year, respectively. Therefore, the rate of annual availability to supply potential was 14.3%. Since timber production and wood chip usage from thinned woods and logging residues in 2018 were 4,667,000 m3/year and 889,600 m3/year, the rates of annual availability for timber and forest biomass resources to those values were 35.0% and 36.7%, respectively. Furthermore, the demand was estimated at 951,740 m3/year from 100,000 m3/year with a generation capacity of 5 MW. The rate of forest biomass resource availability to demand was 34.2%. A thinning subsidy was provided for operational site areas larger than 5 ha in Japan. The rates from subcompartments and aggregated forests with a thinning subsidy increased to 91.4% and 190.3%, respectively. Thus, the estimated availability from aggregated forests with a thinning subsidy met the demand sufficiently in this region.

Agroforestry systems for the production of woody biomass for energy transformation purposes

2007 ◽  
Vol 29 (4) ◽  
pp. 319-328 ◽  
Author(s):  
Holger Gruenewald ◽  
Barbara K.V. Brandt ◽  
B. Uwe Schneider ◽  
Oliver Bens ◽  
Gerald Kendzia ◽  
...  
Keyword(s):  
Woody Biomass ◽  
Agroforestry Systems ◽  
Energy Transformation ◽  
Biomass For Energy

Biomass and nutrients in Great Lakes – St. Lawrence forest species: implications for whole-tree and conventional harvest

1987 ◽  
Vol 17 (3) ◽  
pp. 210-218 ◽  
Author(s):  
O. Q. Hendrickson ◽  
D. M. Burgess ◽  
L. Chatarpaul
Keyword(s):  
Great Lakes ◽  
Large Diameter ◽  
Small Diameter ◽  
Nutrient Concentrations ◽  
Nutrient Contents ◽  
Stem Wood ◽  
N Removal ◽  
Shade Tolerant Species ◽  
Pinus Spp ◽  
Whole Tree

Total aboveground biomass and nutrient contents were measured in a mixed conifer and hardwood stand in Ontario. Removal of woody stems > 9 cm dbh (conventional harvest) yielded 138 000 kg/ha; removal of essentially all aboveground woody material (whole-tree harvest) yielded an additional 52 000 kg/ha, a 38% increase. Whole-tree harvest increased N removal by 191 kg/ha (132%). Logging slash on the conventional harvest plot added 163 kg N/ha to the forest floor. Nutrients within various biomass components of seven tree species were compared. Pinusresinosa Ait., the dominant conifer, produced the greatest amount of biomass per unit mass of nutrient, combining low nutrient concentrations with a high proportion of biomass in stem wood. Populustremuloides Michx., the dominant hardwood, had high proportions of cation-rich bark but had a lower whole-tree N concentration than most other species. High nutrient contents in Abiesbalsamea (L.) (Mill.) and Piceaglauca (Moench) Voss were related to large amounts of fine branches and foliage. Compared with the dominants, shade-tolerant species had less differences in nutrient concentrations between small and large diameter portions of stems and branches, suggesting a limited capacity for retranslocation. Abiesbalsamea was particularly poor at conserving K. A conventional harvest often leaves small diameter stems of species (Abiesbalsamea, Acerrubrum L.) that accumulate large amounts of nutrients and that may be poorly adapted to low throughfall cation inputs and high light intensities following overstory removal. Replacement of stands of Pinus spp. by Populus spp. represents a less efficient use of site nutrient capital in that the latter species produce less biomass per unit nutrient retained in permanent aboveground tissues. Whole-tree harvesting on nutrient-poor sites in the Great Lakes – St. Lawrence forest may lead to establishment of aspen stands of low productivity.

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