ROKHAYA DABA FALL

P L A N 1. INTRODUCTION

2. METHODOLOGY

3.RESULTS 4. CONCLUSIONS and PERSPECTIVES

P U R P O S E FOR PUTTING AGRICULTURE AND

RURAL DEVELOPMENT IN THE CENTER OF POVERTY ERADICATION, FIRST IS TO FIND OUT ENOUGH LAND TO INCREASE SUSTAINABLE FOOD AND ENERGY PRODUCTION FOR GROWING P O P U L A T I O N

RESULTS ARE FIRST DECISION MAKERS REQUEST

CONSIDERING : i) LAND IS NOT A COMMON ECONOMICAL GOODS WITH REGARDS TO ITS

TRIMENDOUS AND DIVERSIFIED FUNCTIONS AND ROLES THAT PUT IT OVER ITS MERCANTILE VALUE (LAND TENURE ISSUE).

ii) LAND IS ALSO REFLECT A PEOPLE CULTURAL GOODS AS A DOMAIN

WHERE PEOPLE HISTORY IS BUILD AND WHERE IS ORGANIZED SOCIO POLITICAL RELATIONS OF A SPECIFIC NATION (Peanuts bassin).

iii) LAND USE IS A REFLECT OF ECONOMICAL DEVELOPMENT (empty land id

not mean non arable land ) L A N D E VA LUAT I O N C O U L D N O T I G N O R E S U C H I S S U E S

W H I L E B R I N G I N G TO D E C I S I O N M A K I N G A D V I S E S F O R D E V E L O P M E N T A N D L A N D O C C U PAT I O N .

INTRODUCTION POINTS SAHEL DROUGHT 1972/1974

HOW TO FEED GROWING POPULATION WITH EXISTING ARABLE LAND

FAO LAND EVALUATION (1976/1978) /FAO UNESCO MAP

RIO 1992 : LAND DEGRDATION

INTRODUCTION POINTS CONVENTIONS : LAND DEGRADATION /CLIMATE

CHANGE/ BIODIVERSITY 1992/2010 GENERATION OF LADA / DESIRE

PROJECTS : RESULTS AND CONCLUSIONS ORIENTED ON DEGRADATION RISK AND LAND CONSERVATION

2008 : THREEFOLD GLOBAL CRISIS AND LAND GRABBING WATER AND NUTRIENTS SCARCITY NOTICED BUT

WHAT ABOUT LAND

DEFINITIONS

MORPHOPEDOCLIMATICAL ZONE REPRESENT GEOGRAPHICAL AREA THAT CAN BE CONSIDER AS HOMOGENEOUS WITH REGARD TO MAJOR INTRINSECTS PHISIOGRAPHICAL, LITHOLOGICAL, PEDOLOGICAL AND CLIMATIC CARACTERISTICS

A LAND IS ARABLE WHEN ITS INTRINSECT

MORPHOPEDOCLIMATIC CARACTERISTICS CAN ALLOW AGRICULTURAL PRODUCTION WITH OR WITHOUT IMPLEMENTING SPECIFIC LAND MANAGEMENT TECHNICS.

ABOUT METHODOLOGY

DOCUMENTATION AND TOOLS

COMPLEMENTARY TERRAIN DATA COLLECTION

SCALES 250 000/500 000/1.000.000

TO O L S A N D D O C U M E N TAT I O N DONNEES SOURCES FORMAT COORDONNEES

SOTER ISRIC / FAO Shape (ArcGIS) UTM28

Base de données SOTER

INP / ISRIC Access UTM28

Cartes topographiques DTGC JPEG Géographique

MORPHOPEDOLOGY DAT/USAID MAP AND DOCUMENT Géographique

Administrative SN Shape (ArcGIS) UTM28 ISOHYÈTES MAPS LADA

CSE Shape (ArcGIS) MAP AND DOCUMENT

UTM28

RAINFULL DATA METEO SERVICE Excel

Google EARTH images Internet KML Géographiques

OUTILS ArcGIS 9.3 ; ArcView 3.2 ; Google Earth ; Tableur Excel ; Extension KML2SHP;

TERRAN DATA COLLECTION

M E T H O D O L O G Y Analyze and data geotreatment ( Senegal SOTER

and Morphopedological data).

Each SOTER units (phisiography and lithology) is analyzed based on their descriptive attributes and,

when needed, new terran data have been collected

Attributes cover physico chimical caracteristics and surface of each unit

R E S U L T S

intermediate results :

PEDOCLIMATICAL ZONES

ARABLE LAND

surface estimation

SURFACE ESTIMATION DONE

FOR EACH MORPHOPEDOLOG

IAL AND AGROCLIMATICAL

UNITS BOTH FROM UNITS AND FROM AGROCLIMATICAL

ZONES

ZONES MORPHOPEDOCLIMATIQUES

L A N D U N I T S EXAMPLE ZONE MORPHOPEDOCLIMATIQUE

LAND UNITS MORPHOPEDO UNITS

JOLOF 1.Jf.bce Oa1 2.Jf.mbc Oa8, Oa9 3.Jf.gpc Od5, P4a3 4.Jf.poh E1dy, Ob1 5.Jf.Tvf Aa4, Ab1, Ab2, Ac1 6.Jf.eni E1a4, E1a5, E1a6, E2ay1, E2b 7.Jf.vfi E1c1, E1c2 8.Jf.gei P4b 9.Jf.noh E2ax2 10.Jf.den E1a1, E1a2, E1a3, E1b, E2ax1,

E2ay1, E2b, E2cx1 11.Jf.pgx Oa7, Oc

AVAILABLE LANDS SURFACE • CLASSIFIED FOREST and PARKS ans HABITATS INSIDE ARABLE

LANDS Overlay classified forest and parcs areas map on the arable land maps

than with arc view extraction of a new map containing arable lands as well as forest and parks covered . That last map is exported to an excell file for surface calculation.

• ESTIMATION DES TERRES APTES DISPONIBLES Excell file with the following formula : TAD = TA – (H +FC) TAD is the area of available arable land; TA : arable lands ; H : habitation area inside arable lands; FC : classified forest and parks inside arable lands

A R A B L E L A N D S

Superface ( km2) Superface (ha) Percentage

TERRES APTES

A B C D categories 124133,74 12413374,35 63,10

TERRES POTENTIELLEMENT APTES

43999,31 4399930,98 22,37

TERRES INAPTES 25674,02 2567402,28 13,05

WATER SURFACE 2914,92 291492,40 1,48

TERRITOIRY 196722 19672200 100,00

ARABLE L AND C LASSI F I CATION

ARABLE LANDS CATEGORIES

A : F I R S T C L A S S A P T I T U D E

B : S E C O N D C L A S S A P T I T U D E

C : T H I R D C L A S S A P T I T U D E

D: FOURTH CLASS APTITUDE

ARABLE LANDS SURFACE

Superficie km2 Superficie ha Pourcentage

TERRES APTES (Catégories A, B, C, D)

124133,74 12413374,35 63,10 TERRES POTENTIELLEMENT APTES

43999,31 4399930,98 22,37

TERRES INAPTES 25674,02 2567402,28 13,05

EAUX 2914,92 291492,40 1,48

TERRITOIRE 196722 19672200 100,00

SURFACE CATEGORIES ARABLE LANDS

ARABLE LANDS

SUPERFICIE Km2

SUPERFICIE Ha

POURCENTAGE

CATEGORIE A 21461,75 2146175,46 17,29

CATEGORIE B 39106,96 3910696,07 31,50

CATEGORIE C 45167,52 4516751,88 36,39

CATEGORIE D 18397,51 1839750,94 14,82

CLASSE 1 124133,74 12413374,35 100,00

C O N C L U S I O N S OBTAINED RESULTS CAN BE USED BY DECISION

MAKERS TO PROGRAM LAND USE IN ORDER TO FACE GROWING LAND DEMAND AND LET PLAY AGRICULTURE CENTRAL ROLE ON POVERTY ALLEVIATION AND FOOD SECURITY AT COUNTRY LEVEL :

DEDICATE ARABLE LAND FOLLOWING THE EXPECTED USE AND ACCORDING TO USERS MEANS AND OBJECTIVES

CONCLUSIONS FOR DECISION MAKING

ARABLE LANDS

LAND USE USERS

CATEGORIE A

NATIONAL FOOD SECURITY

NATIONAL AGRICULTURAL ENTERPRISE

CATEGORIE B

FOOD SECURITY SMALL HOLDER OR COOPERATIVES

CATEGORIE C

TIMELY RENT FOR FOOD OR ENERGY PRODUCTION

FOREIGN AND NATIONAL ENTERPRISE

CATEGORIE D

LAND GRABBING FOREIGN AGRICULTURAL ENTERPRISE

CONCLUSION WITH REGARD TO METHODOLOGY

1. RATIONAL THAT FOUND OUR RESEARCH PLAY A ROLE ON THE CHOSEN METHODOLOGY AND PROVIDE U S W I T H E X P EC T E D S C I E N T I F I C R E S U LT S ;

2. MODEL IS TO BE DONE AND VALIDATE TO MAKE REAPEATABLE THE METHODOLOGY FOR ALL SAHEL REGION WHERE LAND RESSOURCES ARE NOT LIMITATIVE

3. STUDIES ON WATER STRESS AND NUTRIENTS D E F I C I E N C I E S R E L A T I N G T O MORPHOPEDOCLIMATICAL ZONES IS TO BE DONE

PERSPECTIVES • CONDUCT SPECIFIC STUDIES (1/50 000) FOR

DEVELOPMENT PURPOSE FOR EACH ADMINISTRATIVE UNIT TO IDENTIFY NEEDED ARABLE LAND TO FEED POPULATION IN THE LONG RUN AND LAND TO RENT FOR OTHER USAGE (make positive land grabbing);

• CONDUCT LARGER SCALE STUDIES FOR ANY PROGRAM OR PROJECT TO BE IMPLEMENTED TO IDENTIFY NECESSARY MEASURES TO IMPROVE PRODUCTION : fertiliser and water management or/and technics to combat land degradation (salinization…).

TESTING STRONGEST MELT IN THE LABAROTORY

THE BEST MELT IS SHOWN AT FIELD

Dosage of the dam material : 2 kilogrammes de terre de la vallée mélangés avec 200 grammes de paille de riz

BUILDING DAM WITH LOW TECHNOLOGY

DIGUE DE D IEMDIEM SEDHIOU

SEDHIOU Saline lands become arable

B U I L D I N G D A M E T O BUILDING DAM TO ACCESS SALIN LANDS WITH LOW COST TECHNOLOGY (USED MATERIALS AND PEOPLE I N V O L V E M E N T

T H A N K S

F O R Y O U R

A T T E N T I O N

Re evaluating African Arable Lands with new tools P l a nPURPOSE RESULTS ARE FIRST DECISION MAKERS REQUEST INTRODUCTION POINTS INTRODUCTION POINTS DEFINITIONS ABOUT METHODOLOGYTOOLS AND DOCUMENTATIONTERRAN DATA COLLECTION METHODOLOGY RESULTS ZONES MORPHOPEDOCLIMATIQUES LAND UNITS AVAILABLE LANDS SURFACEARABLE LANDS ARABLE LAND CLASSIFICATIONARABLE LANDS CATEGORIES A : FIRST CLASS APTITUDEB: SECOND CLASS APTITUDEC: THIRD CLASS APTITUDED: FOURTH CLASS APTITUDE ARABLE LANDS SURFACESURFACE CATEGORIES ARABLE LANDSCONCLUSIONS CONCLUSIONS FOR DECISION MAKING CONCLUSION WITH REGARD TO METHODOLOGY PERSPECTIVESTESTING STRONGEST MELT IN THE LABAROTORYTHE BEST MELT IS SHOWN AT FIELD BUILDING DAM WITH LOW TECHNOLOGYDIGUE DE DIEMDIEM SEDHIOUSEDHIOU Saline lands become arable BUILDING DAME TO BUILDING DAM TO ACCESS SALIN LANDS WITH LOW COST TECHNOLOGY (USED MATERIALS AND PEOPLE INVOLVEMENT