Setting the heath on fire. Fuel use in two medieval brick kilns from flanders
-
Upload
onroerend-erfgoed -
Category
Government & Nonprofit
-
view
84 -
download
1
Transcript of Setting the heath on fire. Fuel use in two medieval brick kilns from flanders
Setting the heath on fire.
Fuel use in two medieval brick kilns from Flanders (N-Belgium).
Koen Deforce1, 2 Jan Bastiaens2, Koen De Groote2, Jan Moens2, Wim De Clercq3
(1) Royal Belgian Institute of Natural Sciences, (2) Flanders Heritage Institute, (3)
Ghent University
Fuel residues of both kilns:
All small diameter branches (90% < 1cm)
0 10 20 30 40
Alnus sp.
Betula sp.
Calluna/Erica
Cytisus/Ulex
Frangula alnus
Myrica gale
Quercus sp.
Salix sp.
kiln I
Kiln I Kiln II
Calluna vulgaris leaf - 1
Calluna vulgaris twig - 1
Carex sp. 1 1
Cyperaceae - 3
Cyperaceae / Poaceae stem base - 4
Erica tetralix leaf - 13
Rhynchospora sp. - 5
Trichophorum sp. - 5
0 10 20 30 40
Alnus sp.
Betula sp.
Calluna/Erica
Cytisus/Ulex
Frangula alnus
Myrica gale
Quercus sp.
Salix sp.
kiln I0 5 10 15 20 25 30 35
Alnus sp.
Betula sp.
Calluna/Erica
Cytisus/Ulex
Frangula alnus
Myrica gale
Quercus sp.
Salix sp.
kiln II
‘Coppice’ management?
Number of growth rings (kiln II) -> heathland vegetation was cut after c. 7 years
0
10
20
30
40
50
60
1 2 3 4 5 6 7 10 indet
Felling season: end of the growing season (autumn/winter)
Conclusions
• Only small diameter wood used to fire the brick
kilns.
• Two different woodland types were exploited for
fuel. Kiln II: local heathland vegetation
dominated by Calluna vulgaris, Erica tetralix and
Myrica gale. Kiln I: woodland dominated by
Quercus sp., Frangula alnus and Betula sp.
• The heathland vegetation was cut in winter time
and in time cycles of c. 7 years.