Storage of Miscanthus-derived carbon in rhizomes, roots, and soil

Bent Tolstrup Christensen; Poul Erik Lærke; Uffe Jørgensen; Tanka Kandel; Ingrid Kaag Thomsen

doi:10.1139/cjss-2015-0135

Storage of Miscanthus-derived carbon in rhizomes, roots, and soil

Bent Tolstrup Christensen, Poul Erik Lærke, Uffe Jørgensen, Tanka Kandel, Ingrid Kaag Thomsen

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

18 Citations (Scopus)

Abstract

Compared with annual crops, dedicated perennial bioenergy crops are ascribed additional benefits in terms of reduced greenhouse gas emissions; these benefits include increased carbon (C) storage in soil. We measured Miscanthus-derived C in rhizomes, roots, and 0–100 cm soil beneath three 16-yr-old stands established on sandy soils at two experimental sites in Denmark. Miscanthus C in soil was estimated from changes in the natural abundance of 13C. In the 0–20 cm depth, soil C derived from Miscanthus made up to 15–18% of the soil total C. In the 20–50 cm and 50–100 cm depth, Miscanthus C accounted for less than 7% and 5% of the soil total C, respectively. After 16 yr, the total quantity of Miscanthus C in 0–20 cm ranged from 11.9 to 18.2 Mg C ha−1, of which 23–34% was in rhizomes and roots, substantiating their crucial contribution to soil C storage. Future studies should prioritize the seasonal and annual dynamics of C stored in rhizomes and roots, and the fate of these C pools following termination of Miscanthus stands.

Original language	English
Journal	Canadian Journal of Soil Science
Volume	96
Issue	4
Pages (from-to)	354-360
Number of pages	7
ISSN	0008-4271
DOIs	https://doi.org/10.1139/cjss-2015-0135
Publication status	Published - 5 May 2016

Keywords

C natural abundance
Miscanthus
agroecosystem
bioenergy crops
perennial C4 plant
sandy soils
soil carbon

Access to Document

10.1139/cjss-2015-0135

Cite this

@article{65c71176be54429bba809576b23d920e,

title = "Storage of Miscanthus-derived carbon in rhizomes, roots, and soil",

abstract = "Compared with annual crops, dedicated perennial bioenergy crops are ascribed additional benefits in terms of reduced greenhouse gas emissions; these benefits include increased carbon (C) storage in soil. We measured Miscanthus-derived C in rhizomes, roots, and 0–100 cm soil beneath three 16-yr-old stands established on sandy soils at two experimental sites in Denmark. Miscanthus C in soil was estimated from changes in the natural abundance of 13C. In the 0–20 cm depth, soil C derived from Miscanthus made up to 15–18% of the soil total C. In the 20–50 cm and 50–100 cm depth, Miscanthus C accounted for less than 7% and 5% of the soil total C, respectively. After 16 yr, the total quantity of Miscanthus C in 0–20 cm ranged from 11.9 to 18.2 Mg C ha−1, of which 23–34% was in rhizomes and roots, substantiating their crucial contribution to soil C storage. Future studies should prioritize the seasonal and annual dynamics of C stored in rhizomes and roots, and the fate of these C pools following termination of Miscanthus stands.",

keywords = "C natural abundance, Miscanthus, agroecosystem, bioenergy crops, perennial C4 plant, sandy soils, soil carbon",

author = "Christensen, {Bent Tolstrup} and L{\ae}rke, {Poul Erik} and Uffe J{\o}rgensen and Tanka Kandel and Thomsen, {Ingrid Kaag}",

year = "2016",

month = may,

day = "5",

doi = "10.1139/cjss-2015-0135",

language = "English",

volume = "96",

pages = "354--360",

journal = "Canadian Journal of Soil Science",

issn = "0008-4271",

publisher = "Agricultural Institute of Canada",

number = "4",

}

TY - JOUR

T1 - Storage of Miscanthus-derived carbon in rhizomes, roots, and soil

AU - Christensen, Bent Tolstrup

AU - Lærke, Poul Erik

AU - Jørgensen, Uffe

AU - Kandel, Tanka

AU - Thomsen, Ingrid Kaag

PY - 2016/5/5

Y1 - 2016/5/5

N2 - Compared with annual crops, dedicated perennial bioenergy crops are ascribed additional benefits in terms of reduced greenhouse gas emissions; these benefits include increased carbon (C) storage in soil. We measured Miscanthus-derived C in rhizomes, roots, and 0–100 cm soil beneath three 16-yr-old stands established on sandy soils at two experimental sites in Denmark. Miscanthus C in soil was estimated from changes in the natural abundance of 13C. In the 0–20 cm depth, soil C derived from Miscanthus made up to 15–18% of the soil total C. In the 20–50 cm and 50–100 cm depth, Miscanthus C accounted for less than 7% and 5% of the soil total C, respectively. After 16 yr, the total quantity of Miscanthus C in 0–20 cm ranged from 11.9 to 18.2 Mg C ha−1, of which 23–34% was in rhizomes and roots, substantiating their crucial contribution to soil C storage. Future studies should prioritize the seasonal and annual dynamics of C stored in rhizomes and roots, and the fate of these C pools following termination of Miscanthus stands.

AB - Compared with annual crops, dedicated perennial bioenergy crops are ascribed additional benefits in terms of reduced greenhouse gas emissions; these benefits include increased carbon (C) storage in soil. We measured Miscanthus-derived C in rhizomes, roots, and 0–100 cm soil beneath three 16-yr-old stands established on sandy soils at two experimental sites in Denmark. Miscanthus C in soil was estimated from changes in the natural abundance of 13C. In the 0–20 cm depth, soil C derived from Miscanthus made up to 15–18% of the soil total C. In the 20–50 cm and 50–100 cm depth, Miscanthus C accounted for less than 7% and 5% of the soil total C, respectively. After 16 yr, the total quantity of Miscanthus C in 0–20 cm ranged from 11.9 to 18.2 Mg C ha−1, of which 23–34% was in rhizomes and roots, substantiating their crucial contribution to soil C storage. Future studies should prioritize the seasonal and annual dynamics of C stored in rhizomes and roots, and the fate of these C pools following termination of Miscanthus stands.

KW - C natural abundance

KW - Miscanthus

KW - agroecosystem

KW - bioenergy crops

KW - perennial C4 plant

KW - sandy soils

KW - soil carbon

UR - http://www.scopus.com/inward/record.url?scp=84995593616&partnerID=8YFLogxK

U2 - 10.1139/cjss-2015-0135

DO - 10.1139/cjss-2015-0135

M3 - Journal article

SN - 0008-4271

VL - 96

SP - 354

EP - 360

JO - Canadian Journal of Soil Science

JF - Canadian Journal of Soil Science

IS - 4

ER -

Storage of Miscanthus-derived carbon in rhizomes, roots, and soil

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this