Burnt areas we re mos tly l ocated within 2 k m from a s ettlem ent.

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Show all 5 authors Hide Download full-text PDF Read full-text Download full-text PDF Read full-text Download citation Copy link Link copied Read full-text Download citation Copy link Link copied Citations (7) References (106) Abstract What role played historical anthropogenic disturbances in modifying the natural fire regime To which extent have they shaped current forest Do those have lingering impacts in presentday landscape Are certain tree species related to former landuse Eastern Qubec, Canada.

Spatial data on landscape structure, burnt areas, settlements, and forest patches were vectorized on an archival map dating back to 1938.

For each landscape class, the total area, the number of polygons, the proportion of the total landscape occupied by the largest polygon were analyzed according to elevation and to the Euclidean distance from the settlement polygons.

An index of the spatial link between the landscape classes was calculated, based on the proportion of the perimeter of the polygons of each class shared with each of the other classes.

A KolmogorovSmirnov test for pooled data was used to obtain the frequency distributions of landscape classes as a function of distance.

The association between settlement fires and presentday vegetation, and more specifically Populus and Betula stands, was tested by superimposing the most recent ecoforest map on the 1938 landuse map.

Distance bands on either side of the 1938 settlement front were delineated to calculate the proportion of each distance class occupied by presentday aspen and birch stands.

Anthropogenic fires generated a recognizable landscape pattern of landuse.

Burnt areas were mostly located within 2 km from a settlement.

The presence and spatial distribution of aspen in the presentday landscape is tightly associated with previously burnt areas.

Past landuse strongly altered the natural fires regime and associated tree species.

Current landuse could potentially lead to increased degraded forest landscapes in a near future.

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JM R acknow ledges s uppor t from t he Macp s Teaching and R esearc h Fores t (Canad a) and the MI TACS Acceler ate prog ram (No.

IT12145, Can ada) and t he Nor thern Environ ment Rese arch Gr oup BOR AS (UQAR, Canad a).

Handling Editor: Monika Wul f Abstract Questions: W hich role did histor ical ant hropogenic disturbances play in modif ying the natural fir e reg ime To what ex tent have t hey shaped curre nt fo rest Do those disturba nces have lingerin g i mpact s in the prese nt-day land scape Are cer tain tre e species rel ated to former l and use Location: eastern Quebe c, Canad a.

Methods: Spat ial data on lan dscape s truc ture, burnt ar eas, set tlement s, and fore st patches were vecto rized on an archival map dat ing back to 1938.

For each landsca pe class, the tota l area, the num ber of polygons, a nd the propo rtion of the tot al land- scape occupied by the largest polygon were anal yzed according to elevation and to the Euclidean dist ance from t he set tlemen t p olygons.

An i ndex of the spatial link be tween the landsca pe clas ses was calc ulated, based on the propo rtions of t he perimeter of the polygons of each clas s sha red with each of the other classes.

A KolmogorovSmirnov test for pooled dat a w as u sed to ob tain the frequ ency distr i- butions o f landscape cl asses as a functi on of distanc e.

The asso ciation between set - tlement f ires and p resent-day vegetatio n, and mo re specif ically Populus and Be tula stands, was tested by sup erimposin g the most recent ecoforest map on the 1 938 land-use map.

Results: Ant hropogeni c fires generated a recogniza ble landscap e pattern of land use.