More Related Content
Similar to 02 christo-marais-south africa-tree-diversity-day-2014-cop12 (20)
More from World Agroforestry (ICRAF) (20)
02 christo-marais-south africa-tree-diversity-day-2014-cop12
- 2. Presenta(on*Overview
1. Some'impacts'of'land'degrada4on'on'natural'infrastructure'and'the
quality'and'quan4ty'of'ecosystem'services'focusing'on'woodland'and'forest
landscapes.
2. Overview'of'biomes'rela4ng'to'land'degrada4on.
3. Interven4ons'by'the'South'African'government'to'increase'investments'in
natural'infrastructure'and'the'delivery'of'key'ecosystem'services:
SubTropical'Thicket'Restora4on'Programme
Makapanstad'Bush'Encroachment'Project
Working'for'Forests'–'KwaZuluONatal'&'Eastern'Cape
Riparian'restora4on'–'Western'Cape
4. Mainstreaming'investments'in'natural/ecological'infrastructure'and'the
delivery'of'ecosystem'services.
5. Some'recommenda4ons'on'future'investments.
- 6. Extent&of&Natural&Resource
Degrada4on&in&South&Africa
Alien&plant&invasions&(around&19
million&hectares&or&the&equivalent&of
between&1.8&and&1.9&million
hectares&if&condensed&to&100%
density),
Gully&erosion&(around&559&500&ha),
Sheet&erosion&(around&3.635
million&ha),&and
Bush&encroachment&(this&has¬
been&accurately&es4mated&yet&but
could&be&as&much&as&20&million
hectares).
Degraded&wetlands&(some&35%&of
wetlands&have&been°raded&to&a
lesser&or&larger&extent)
- 7. Economic'Impacts'of'Natural
Resource'Degrada7on
Reduced&produc*ve&poten*al&of
land&especially&in&the&form&of&grazing,
ecotourism&(/nature&based),&energy
sources&and&building&materials,&mainly
in&rural&areas.
Reduc*on&of&water&security&due&to;
Reduced&mean&annual&runoff&as
a&result&of&invasive&alien&trees&in
watersheds,&wetlands&and
riparian&areas,
Increased&wet&season&flows
(flooding)&due&to&reduced
infiltra*on&as&a&result&of&a&loss&of
vegeta*on&cover,
- 8. Economic'Impacts'of
Natural'Resource
Degrada7on'Cont.
Reduc&on)of)water)security)due)to;
Reduced)dry)season)flows
(droughts))due)to)reduced
infiltra&on)both)as)a)result)of
increased)runoff)during)rainfall
events)and)on)the)other)end)of)the
spectrum)the)impact)of)invasive
alien)trees)in)watersheds,)riparian
zones)and)wetlands.
Increased)silta&on)of)water
infrastructure)due)to)increased
erosions)from)watersheds,)river
banks)and)wetlands,
- 9. Economic'Impacts'of'Natural
Resource'Degrada7on'cont.
Reduc&on)of)water)security)due)to;
i. Decreased)recharge)of)ground
water)resources)due)to)increased
runoff)during)wet)season)and)the
impact)of)invasive)alien)trees)on
shallow)aquifers,))and
ii. Decreased)quality)of)water)due
to)unsustainable)land
management)prac&ces.
Nega&ve)impacts)on)the)carbon
balance)due)to;
i. A)loss)in)above)ground)biomass,
ii. Reduced)liAer)accumula&on,)and
iii.A)reduc&on)in)soil)carbon.
- 11. 3
2
1
4
Medupi
Drylands1Project
Working1for
Forests
Sub1Tropical
Thicket
RestoraAon
WfW1Riparian 1Programme
RestoraAon
Programmes
- 12. 1.
Opportunities in the Carbon
Market: Working for Ecosystems
in the Sub Tropical Thicket
Restoration Programme
- 14. Impacts!of!deserJficaJon!on!the!carbon!balance
!
!
Above
ground
!!
40!±!3
!!!!!!!
7!±!1
!!!
!
!
Li4er
!!!
11!±!1
!!!!!!!
1!±!0.4
!!!
!
!
Roots
!!!
25!±!1.3
!!!!!!!
11!±!0.7
!!!
!
!
Soil
!!!
133!±!27
!!!!!!!
95!±!15
!
and!falling?
!
!
!
Total
!!!
209)±)28
!!!!!!!
114)±)14
!!!
t)C)ha01
Mills!et.$al.!(2005)
Austral!Ecology
- 15. G.#van#Luijk#R.M.#Cowling#,
M.J.P.M.#Riksen#,#J.
Glenday(2013)
….#Comparing#measurements#in#a#grazed#area#without#a#thicket#canopy
to#those#in#an#area#with#intact#thicket#cover,#…it#was#found#that#the#loss
of#thicket#cover#had#resulted#in#an#extreme#change#in#soil#infiltra>on
rates,#a#decrease#in#soil#moisture#reten>on,#an#increase#in#run?off,#and
increase#in#erosion.
Despite'the'rela,vely'high'rainfall'intercep,on'rate'(roughly'40%)
observed'for'spekboom'thicket,'the'differences'in'infiltra,on'more
than'compensated,'leading'to'greater'soil'moisture'beneath'intact
thicket.
- 18. Makapanstad,Project,vision,Cont.
$
Establishment,of,a,sustainable,enterprise
that$will$generate$income$from$le0over
biomass$from$the$control$of$bush
encroachment$and$other$organic$waste.
The,acquisi5on,of,the,necessary
knowledge,and,skills$by$members$of$the
community$for$the$protec9on$and
improvement$of$their$own$natural
environment.
Increase,the,grazing,capacity$and$improve
some$essen9al$ecosystem$services$through
the$control$of$Sickle$bush$for$the$direct
benefit$of$communal$farmers.
- 23. 3.#Working#for#Forest1s. …#promo4ng#the#conversion
of#invading#alien#plant#stands
into#u4lizable#resources#for
sustainable#forestry#land?use
prac4ces.#
2. The#programme#seeks#to
capitalize#upon#the#invasive
alien#species,#move#towards
species#that#will#replace#the
invasive#monoculture#stands
with#a#diversity#of#species
compa4ble#with#climate
change,#the#risk#of#diseases,
promote#biodiversity#and#be
less#vulnerable#to#wild#fires,
#
- 24. 3.#Working#for#Forests#cont.
1. …#offer#scope#for
sustainable#livelihoods#and
op<mal#land>use
prac<ces.#
#
2. While#also#promo<ng#the
conserva<on#of#indigenous
forests,#and#the
sustainable#use#of#the
resources#and#ecosystem
services#provided#by#these
forests.#
#
- 27. REF: CRICKMAY & ASSOCIATES
0
Forecast*of*the*average*annual*supply*and
demand*of*so6wood*sawlogs
Period Demand Supply Annual
Shortage
Percentage
Shortage
2004-2008 5,546,800 4,040,470 1,506,330 27%
2009-2013 6,180,400 5,122,000 1,058,400 17%
2014-2018 6,857,000 5,269,750 1,587,250 23%
1019-2023 7,610,400 6,235,050 1,375,350 18%
2024-2028 8,450,200 5,781,950 2,668,250 32%
2029-2033 9,560,600 4,708,300 4,852,300 51%
Demand is based on a growth factor of 2½ %
- 33. • Acacia cyclops
(Rooikrans)
• Acacia mearnsii (Black
Wattle)
• Acacia saligna (Port
Jackson)
• Eucalyptus spp.
- 35. RIPARIAN&VERSUS&NON,RIPARIAN&STREAM&FLOW&REDUCTION
Trreeattmeentt
Fiirrsstt Yeearr IInccrreeassee iin
Sttrreeamfflloow afftteerr Trreeattmeentt
((m3/ha cclleearreed))
Rattiioo ooff
Riiparriian/Noon--
Riiparriian IInccrreeassee
Westfalia
(Limpopo)
Clear riparian
indigenous forest
5 445
2.0
Clear non-riparian
indigenous forest
2 700
Witklip
(Mpumal.)
Clear riparian scrub
& pines
7 965
1.9
Clear non-riparian
pines
4 045
Biesievlei
(W Cape)
Clear riparian pines 11 505
3.4
Clear non-riparian
pines
3 430
- 40. Medium*Term*Em* ployment*Needs
• Government*and*South
African*Business*Leaders
have*agreed*that*5*million
jobs*need*to*be*created.
• 75%*of*these*should*be*in
the*private*sector*(3.75
million)*and
• 25%*through*government
programmes*(1.25*million)
- 41. The$programme$grew$rapidly
from$a$budget'of'US$5'million
(ini3ally'secured'as'a'once9off
grant'from$the$Reconstruc7on
and)$Development$Programme
by$Prof$Kader$Asmal,
Currently$operates$in$all$nine
provinces$on$a$budget$of$around
US$180'million'in'2014/15,'and
Employs$around$50'000'people.
The$programme$moved$to$the
Department$of$Environmental
Affairs$in$the$2011/12$financial
year,$where$its$mandate'was
formally'broadened'to'address
all'broader'na3onal'resource
management'objec3ves
Some'Socio9Economic
Sta3s3cs
- 42. Interven'ons* Needed* for* the* development* of* natural* resource
management* and* investments* in* natural* infrastructure* and* ecosystem
services*sector
Primary*ecological*research*on
the*impacts*of*land*management
(including*invasive*alien*species)
on*the*quality*and*quan'ty*of
ecosystem*services*and
biodiversity*(e.g.*invasive*alien
plants,*overgrazing,*fire,
consump've*harves'ng*of*fibre
etc.).
Transla'on*of*the*results*from*1
above*into*its*economic*and*social
consequences.
Based*on*the*outcomes*of*1*&*2
above*the*priori'za'on*of
government*investments*in
ecosystem*services*and*the
restora'on*of*natural