Comparing predicted yield and yield stability of willow and Miscanthus across Denmark
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Comparing predicted yield and yield stability of willow and Miscanthus across Denmark. / Larsen, Søren; Jaiswal, Deepak; Bentsen, Niclas Scott; Wang, Dan; Long, Stephen P.
I: Global Change Biology. Bioenergy, Bind 8, Nr. 6, 11.2016, s. 1061-1070.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Comparing predicted yield and yield stability of willow and Miscanthus across Denmark
AU - Larsen, Søren
AU - Jaiswal, Deepak
AU - Bentsen, Niclas Scott
AU - Wang, Dan
AU - Long, Stephen P.
PY - 2016/11
Y1 - 2016/11
N2 - To achieve the goals of energy security and climate change mitigation in Denmark and the EU an expansion of national production of bioenergy crops is needed. Temporal and spatial variation of yields of willow and Miscanthus are not known for Denmark because of a limited number of field trial data. The semi-mechanistic crop model BioCro was used to simulate the production of both short rotation coppice (SRC) willow and Miscanthus across Denmark. Predictions were made from high spatial resolution soil data and weather records across this area for 1990-2010. The potential average, rain-fed mean yield was 12.1 Mg DM ha−1 yr−1 for willow and 10.2 Mg DM ha−1 yr−1 for Miscanthus. Coefficent of variation as a measure for yield stability was poorest on the sandy soils of northern and western Jutland and the year-to-year variation in yield was greatest on these soils. Willow was predicted to outyield Miscanthus on poor, sandy soils whereas Miscanthus was higher yielding on clay-rich soils. The major driver of yield in both crops was variation in soil moisture, with radiation and precipitation exerting less influence. This is the first time these two major feedstocks for northern Europe have been compared within a single modeling framework and providing an important new tool for decision making in selection of feedstocks for emerging bioenergy systems.
AB - To achieve the goals of energy security and climate change mitigation in Denmark and the EU an expansion of national production of bioenergy crops is needed. Temporal and spatial variation of yields of willow and Miscanthus are not known for Denmark because of a limited number of field trial data. The semi-mechanistic crop model BioCro was used to simulate the production of both short rotation coppice (SRC) willow and Miscanthus across Denmark. Predictions were made from high spatial resolution soil data and weather records across this area for 1990-2010. The potential average, rain-fed mean yield was 12.1 Mg DM ha−1 yr−1 for willow and 10.2 Mg DM ha−1 yr−1 for Miscanthus. Coefficent of variation as a measure for yield stability was poorest on the sandy soils of northern and western Jutland and the year-to-year variation in yield was greatest on these soils. Willow was predicted to outyield Miscanthus on poor, sandy soils whereas Miscanthus was higher yielding on clay-rich soils. The major driver of yield in both crops was variation in soil moisture, with radiation and precipitation exerting less influence. This is the first time these two major feedstocks for northern Europe have been compared within a single modeling framework and providing an important new tool for decision making in selection of feedstocks for emerging bioenergy systems.
KW - Faculty of Science
KW - BioCro
KW - bioenergy
KW - C4 photosynthesis
KW - crop model
KW - geospatial modeling
KW - mechanistic model
KW - Miscanthus
KW - perennial grasses
KW - short-rotation coppice
KW - Willow
KW - Wimowac
U2 - 10.1111/gcbb.12318
DO - 10.1111/gcbb.12318
M3 - Journal article
VL - 8
SP - 1061
EP - 1070
JO - GCB Bioenergy
JF - GCB Bioenergy
SN - 1757-1693
IS - 6
ER -
ID: 156557218