Sergio Prats Diana Vieira João Puga & other esp members

Transcription

1 Disclimer nd Copyright: Jn Jco Keizer Flávio Silv Sergio Prts Din Vieir João Pug & other esp memers João P. de Lim João Arntes CESAM Universidde de Aveiro Portugl MARE Universidde de Coimr Portugl EU-FP7 RECARE Preventing nd Remediting degrdtion of soils ineurope through Lnd Cre

2 Disclimer nd Copyright: vegettion cover litter cover infiltrtion cpcity soil erodiility FIRE

3 Disclimer nd Copyright: hectres urnt Portugl: > h/yer wildfires hve: (i) occurred frequently (ii) ffected lrge res

4 Disclimer nd Copyright: ut effectiveness poorly studied in Portugl

5 Disclimer nd Copyright: plot-scle field trils Legend 2007 = PdVoug 2008 = Colmel 2010 = Ermid 2012 = Várze 2012 = Várze euclypt residue mulching hydromulching euclypt residue mulching + PAM pine needle mulching + seeding euc & pine stnds pine stnd euclypt stnd pine stnd

6 Soil erosion modelling JRC ISPRA, 20-22/03/2017 Prts et l., 2016 (STOTEN) - euclypt logging slsh residues for iomss power plnts ~ 2m untreted treted Disclimer nd Copyright: treted untreted treted untreted

7 Disclimer nd Copyright: Prts et l., 2016 (STOTEN) - euclypt logging slsh residues for iomss power plnts

8 Disclimer nd Copyright: Prts et l., 2016 (STOTEN) 4.5 Mg h-1 y Mg h-1 y-1-96 % -92 % << 1 Mg h-1 y-1 14 Mg h-1 of forest residues

9 Disclimer nd Copyright: Prts et l., 2016 (STOTEN) Prts et l., 2012 (GEODERMA): 4.5 Mg h-1 y Mg h-1 y Mg h-1 y-1-96 % -92 % 9 Mg h-1 forest residue << 1 Mg h-1 y-1-86 % 14 Mg h-1 of forest residues

10 Disclimer nd Copyright: mulching with forest residues ut miniml costs miniml ppliction rte

11 Disclimer nd Copyright: testing 6 mulch tretments in soil hydrulic lortory Prts et l., sum. (FE&M) 1 control (re soil) vs.3 mulching strips (1/3, 2/3, 3/3 of 0.3 m x 2.7 m soil flume) 2 mulch ppliction rtes (50 nd 70 % cover) 3 replicte runs per tretment 1 run = 5 consecutive events of simulted rinfll nd rinfll+run-on 7 tretments x 3 replicte runs x 5 events = 105 events

12 Disclimer nd Copyright: Rinfll + Inflow (mm h -1 ) testing 6 mulch tretments in soil hydrulic lortory Prts et l., sum. (FE&M) 5 events per run (F4 eliminted) Dry run (D) R Dry spell (2 h) Wet run (W) R Time (min) Dry spell (2 h) Wet + Inflow run (W+F) F2 F1 R F

13 Disclimer nd Copyright: m testing 6 mulch tretments in soil hydrulic lortory Prts et l., sum. (FE&M) 5 events per run (F4 eliminted) nozzle rinfll upstrem inflow constnt hed tnk 3/3 flume s length 2/3 flume s length outlet runoff 1/3 flume s length runoff collection dringe soil soil flume with 40% slope overlnd flow upstrem inflow feeder ox wter supply

14 Disclimer nd Copyright: testing 6 mulch tretments in soil hydrulic lortory Prts et l., sum. (FE&M)

15 Disclimer nd Copyright: testing 6 mulch tretments in soil hydrulic lortory ) ) c) d) e) f) g) 1/3 2/3 3/3 1/3 2/3 3/3 control 50 % mulch cover 70 % mulch cover BS 1/3-50% 2/3-50% 3/3-50% 1/3-70% 2/3-70% 3/3-70% Arntes et l., sum. (SOIL SCIENCE)

16 Disclimer nd Copyright: Effectiveness (%) testing 6 mulch tretments in soil hydrulic lortory Prts et l., sum. (FE&M) m50 2m50 3m50 1m70 2m70 3m70 D W F0 F1 F2 D W F0 F1 F2 Runoff (mm) Soil losses (g m -2 )

17 Disclimer nd Copyright: Effectiveness (%) testing 6 mulch tretments in soil hydrulic lortory Prts et l., sum. (FE&M) Prts et l., sum. (FE&M): est lterntive = 50% on 3/3 1m50 2m50 3m50 1m70 2m70 3m70 D W F0 F1 F2 D W F0 F1 F2 Runoff (mm) Soil losses (g m -2 )

18 Disclimer nd Copyright: testing 2 mulch tretments in field, in 2015 urnt re Keizer et l., in prep. 1 control nd 1 mulching strip (3/3 of 2 m x 5 m plot) 2 ppliction rtes (50 vs. 80 % cover = 2.5 vs. 8 Mg h-1) 3 replicte erosion plots per tretment (divided over 3 locks) M2 M4 M6 M1 M3 M5 SF1 D1 D2 D3 SF2 SF3 SF4 SF5 SF6 SF7 SF8 SF9

19 Disclimer nd Copyright: testing 2 mulch tretments in field, in 2015 urnt re 8 Mg h Mg h-1

20 Disclimer nd Copyright: 15 Sep Oct Nov Dec-15 Jn Fe Mr Apr-16 My Jun Jul-16 Aug-16 Sediment losses (Mg h -1 ) Orgnic mtter content Efficiency Sediment losses (Mg h -1 ) c c d 25% c Soil 0% erosion modelling JRC ISPRA, 20-22/03/2017 c c 10 c No mulch Low mulch 100% 75% 50% testing 2 mulch tretmentsc in field, in 2015 urnt re 25% 0.1 sediment 0% losses (Mg h-1) % % 1 30% 20% 10% c c no mulch: 8 Mg h-1 c much,, : -98 % c c little,, : -86 % c c c c c Low mulch High mulch High mulch No no No mulch Low 2.5 Low mulch Mg h-1 High 8 High Mg mulch h-1 No mulch Low mulch High mulch d % 0% No mulch

21 Disclimer nd Copyright: 1. soil erosion rtes following wildfires cn e well ove 1 Mg h-1 y-1 2. mulching with forest residues cn sustntilly reduce post-fire erosion 3. l experiments cn e very useful to optimise mulching schemes