desire project study site 9 - tunisia

DESIRE ProjectStudy site 9 - Tunisia

.

.

Mapping the spatial assessment Mapping the spatial assessment of degradation and conservationof degradation and conservation

H. Taamallah, M. Ouessar, I. Enneb, M. ChniterH. Taamallah, M. Ouessar, I. Enneb, M. Chniter

IRA – MédenineIRA – Médenine

CRDA - MédenineCRDA - Médenine

Symposium ‘Assessing Benefits of SLM – key for success’

Rabat, Morocco: 19 October 2009

Study Area

The study area covers the watersheds of wadi Oum Zessar and wadi El Halouf which are localized in southeast Tunisia (north west of the city of Médenine). Administratively, it belongs to three counties (Médenine Nord, Sidi Maklouf and Béni Khédache) of the province of Médenine.

Land use system (LUS)Land use system (LUS)

Mapping unitsMapping units

Cereal agricultureCereal agriculture

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Cereals Agriculture

1 0

Mapping unit ID: (ZK-BKO2)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Et Ed 5% 2 2 f4, n4 p/ t P1(-2), E4(-2)

Pc 5% 1 1 s1 p / t P1(-2), E4(-2)

Bc 40% 3 2 f4, s4 p/ t P1(-2), E4(-2)

Expert recommendation (Step 5)

Expert

recommendation Remarks and additional information

M

P

* To reduce vegetation cover degradation through the use of means for sand fixation and soil and water conservation (CES)

* To use practices to restore the vegetation cover and to reduce soil degradation

Mapping unit ID: (ZK-BKO2)

Conservation (step 4)

a)

Name

b) Group

c)

Measure

d) Purpose

e) % of

area

f)Degration

addressedg)Effecti

veness

h)Effect.

Trendi) Impact

on ESS

j)Period

k)Ref

QT

Sand stabilisat-ion

SD S8 M1 M/P 5% Ed Bc

Et 3 0

P1(+2)

E4 (1)

1950

Tabia WH S3 M/P 10% Ed Bc

Et Bc3 0

P2 (1)

E1 (1)

1950

Agriculture behind jessourAgriculture behind jessour

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Agriculture behind jessour

0 0

Mapping unit ID: (ZK-BKO3 / ZK-BKE4 / ZK-MN3 / ZK-SM1)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Wg Wt 10% 2 1 s3, n3 l P2 (-1), E2(-1)

Ha Hs 10% 2 2 n1/ n6 P2(-1), E4(-1)

Bc 15% 3 2 n6 E8 (-1),

Mapping unit ID: (ZK-BKO3 / ZK-BKE4 / ZK-MN3 / ZK-SM1)

Conservation (step 4)

a)

Name

b) Group

c)

Measure

d) Purpose

e) % of

area

f)Degration

addressedg)Effectiveness

h)Effect.

Trendi) Impact

on ESS

j)Period

k)Ref

QT

Jessour WH S3 A1 M/P 60% Wg Ha Bc 3 1 P2(2)

E2 (2)

E8(2)

1900

Expert recommendation (Step 5)

Expert

recommendation Remarks and additional information

M

P

* To intensify water and soil conservation (CES) works.

*To ensure maintenance and to safeguard CES works (especially after the floods and exceptional rains).

Plain rangelandsPlain rangelands

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Plain rangelands -2 -2

Mapping unit ID: (ZK-BKO4 / ZK-BKE3 / ZK-MN4 / ZK-SM6)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Wt Wg Wr 15% 2 3 s1, g1/n6 l/P P1 (-2), E2(-2) E8(-2)

Et Ed 15% 2 3 f6/ g1/n6 l/P P1 (-2), E2(-2) E8(-2)

Bc B q 10% 3 3 n6 l/P E8 (-2), E2(-2), P1(-2)

Mapping unit ID: (ZK-BKO4 / ZK-BKE3 / ZK-MN4 / ZK-SM6)

Conservation (step 4)

a)

Name

b) Group

c)

Measure

d) Purpose

e) % of

area

f)Degration

addressedg)Effecti

veness

h)Effect

Trendi) Impact

on ESS

j)Period

k)Ref

QT

Fencing

Resting GR M5 M/P 5% Wt Et 4 1 E2 (2)

E8(2)

1957 TUN11

Afforestation

vs V2 M/P 5% Et Bc 4 1 E2 (2)

E8(2)

1957 TUN11

Sand dune fixation

Sd S8 M/P 5% Et 4 1 E2 (2)

E8(2)

1957 TUN11

Expert recommendation (Step 5)

Expert

recommendation Remarks and additional information

M

P

* To use practices for vegetation cover restoration, reduction of livestock, while limiting cultivation extension

* To consolidate / Land protection works.

Mountain rangelandsMountain rangelands

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Moutain range lands

-2 -2

Mapping unit ID: (ZK-BKO5 / ZK-BKE2 / ZK-MN2 / ZK-SM2)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Wg Wt 15% 3 3 n3 t /P P1 (-2)

Ha 10% 2 2 n3 ,n6 P/h E2(-2)

Bc Bh 15% 3 3 g1 P/t/h E8 (-3)

Mapping unit ID: (ZK-BKO5 / ZK-BKE2 / ZK-MN2 / ZK-SM2)

Conservation (step 4)

a)

Name

b) Group

c)

Measure

d) Purpose

e) % of

area

f)Degration

addressedg)Effectiveness

h) Effect.

Trend

i) Impact

on ESS

j)Period

k) Ref

QT

Fencing

Resting GR V2 M/P 5% Bc Bt 4 1 E8 (3)

P1(2)

1960 TUN11

Expert recommendation (Step 5)

Expert

recommendation Remarks and additional information

M

P

•To extend setting fenced areas

* To reduce livestock number.

Dahar rangelandsDahar rangelands

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Dahar rangelands 0 0

Mapping unit ID: (ZK-BKO1)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Et Ed 15% 3 3 g1/ l2/ n4 t /O P1 (-1) / E8(-2)

Cn 15% 2 2 e2 t /O E8(-2)

Wt 10% 3 3 n3 t /O E8 (-2)

Mapping unit ID: (ZK-BKO1)

Conservation (step 4)

a)

Name

b) Group

c)

Measure

d) Purpose

e) % of

area

f)Degration

addressedg)Effecti

veness

h)Effect.

Trendi) Impact

on ESS

j)Period

k)Ref

QT

Pallissade Sd S8 M/P 3% Et Ed 3 1 P1 (1)

E8(2)

1980 TUN11

Fencing

RestingGR M5 M/P 3% Et Ed Cn 3 1

E8(2)

1980 TUN11

Afforestation

VS V1 M/P 3% Et Wt 2 1 E8(2) 1980 TUN11

Expert recommendation (Step 5)

Expert

recommendation Remarks and additional information

M

P

• reduce wind erosion phenomenon and livestock number,

• Watering points/sources multiplication

* To Improve fencing and resting works

* Expansion of plantations / Pallissade

Agriculture behind tabiasAgriculture behind tabias

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Agriculture behind Tabia

2 2

Mapping unit ID: (ZK-BKE1 / ZK-MN1/ ZK-SM4)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Wt Wd 5% 2 -2 n2 / n4 l E2(-1)

Mapping unit ID: (ZK-BKE1 / ZK-MN1/ ZK-SM4)

Conservation (step 4)a)

Name

b) Group

c)

Measure

d) Purpose

e) % of

area

f)Degration

addressedg)Effecti

veness

h)Effect.

Trendi) Impact

on ESS

j)Period

k)Ref

QT

Tabia Tr / Wh / Sc

S3 A1 M/P 30% Wt Wg 4 1 P1 (3), E2(3)

S5(3)

1960 TUN11

GabionRecharge

SA

PR

Sc

S6 M/P 20% Wt Wg 4 1 P1 (3), E2(3)

S5(3)

1960 TUN11

Drg stones

ridges

RH

Sc

S2 A1 M/P 10% Wt Wg 4 1 P1 (3), E2(3)

S5(3)

1960

Gabionspreading

WH

PR

Sc

S6 M/P 10% Wt Wg 4 1 P1 (3), E2(3)

S5(3)

1960 TUN11

Expert recommendation (Step 5)

Expert

recommendation Remarks and additional information

M

P

* Consolidation and reservation of plantation

* watershed integrated management

Halophyte rangelandsHalophyte rangelands

Land use system (step2)

Administrative

or other unit

Land use system

(LUS)

a)Area

Trend

b) Intensity

Trend

District xy Halophyste

rangelands -1 1

Mapping unit ID: (ZK-SM6)

Land degradation (step 3)

a)Type

i ii iii

b)

Extent

c)

Degree

d)

Rate

f) Direct

cause

e) Indirect

cause

g) Impact on

Eco System.

Services

Cs Pw 50% 3 1 n5O: high evaporation

Runoff reduced

E1(-1)

Bc

35% 2 1 e2 h E4 (-2)

Expert recommendation (Step 5)Expert

recommendation Remarks and additional information

M/P

• Grazing level control,

• Improve water runoff

• wood collection reduction

To be continued …. On line mapping