9 The Land Resources of North East Nigeria A/blume1 The ...

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Mean saturation deficit (mb) at 0900 and at 1500 hours G.M.T. Millibars 60-1 50- 40- 30- 20- 10- Millibars 60 50- 40- 30- 20- 10- Millibars 60 50- 40- 30- 20 10- BAUCHI 1500 hours 0900 hours ~l 1 1 1 \ 1 1 1 1 1 1 1 J F M A M J J A S O N D Months YOLA 1500 hours 0900 hours ~l 1 I 1 I 1 1 1 1 1 1 1 J F M A M J J A S O N D Months MAIDUGURI 1500 hours 0900 hours "1 I 1 I I I I I 1 1 1 1 J F M A M J J A S O N D Months D.O.S. 3099 D 38 Figure 4
mm in 300 12 -l Moist Period * Humid Period* ' 1 1 - NORTHERN /^ GUINEA / \ 250 10- 9 - 200 8 • o o 300 12 I I 250 10 9 200 8 7 150 6 5 100 4 3 50 2 I 250 10 9 200 8 7 150 6 5 100 4 3 50 2 7 - 150 6 - 100 4 - I **« / \ * / \ * * * / / \ \ * * / \ * * / \ * % / \ * >+ "' ° ° ° h V 5 - /".," o o-V o / •••+•••- \ 3 - 50 2 - D.O.S. 3099 E SUDAN SAHEL M A M | *- -* Eco-climatic zones in the project area Formalised modal climatic parameters Figure 5 Moist Period* M A M J A S O N D M j | Moist Period* + + + + + Potential evapotranspiration Rainfall o o Temperature C °F T-40 100 --20 70 60 --10 50 80 20 7 ° 60 --10 50 Annual rainfall > 1000mm ( 40in ) * Length of rainy season 150-170 days. Annual potential evapotranspiration End of April-Mid October I600-I800mm (63-71 in) Toul annual hours of bright sunlight 2700-3000 Annual rainfall 500-1000mm (20-40in) * Length of rainy season 90-150 days. May-September Annual potential evapotranspiration I800-2000mm (71-80 in) Total annual hours of bright sunlight 3000-3300 Annual rainfall < 500mm (20 in) • Length of rainy season 60-90 days. June- Mid September Annual potential evapotranspiration I800-2000mm (71-80 in) Total annual hours of bright sunlight 3000-3300 " sensu Walter (1967) ' sensu Cocheme and Franquin (1967) 39
Page 1 and 2: 9 The Land Resources of North East
Page 3 and 4: ' -\* •ï /Ti' -»4, W 'JL "•
Page 5 and 6: THE LAND RESOURCES DIVISION The Lan
Page 7 and 8: LIST OF PLATES Frontispiece. Nomadi
Page 9 and 10: INTRODUCTION TO VOLUMES 1- 5
Page 11 and 12: HISTORY OF THE STUDY PREFACE TO VOL
Page 13 and 14: United States Agency for Internatio
Page 15 and 16: ACKNOWLEDGEMENTS PART 1. INTRODUCTI
Page 17 and 18: GENERAL CIRCULATION CLIMATE by P Tu
Page 19 and 20: MANGA PLAINS ' OMatsena ^ *^ / 10°
Page 21 and 22: 1 015 mm (40 in) and 890 mm (35 in)
Page 23 and 24: Potential Evapotranspiration Discus
Page 26 and 27: Omm Oin l-25mm (O-l-lin) 25-50mm (l
Page 28 and 29: P 5-1 O 2- D.O.S. 3099 A Distributi
Page 31 and 32: 20 l°-22-5°C (68 l°-72-5°F) 22-
Page 33 and 34: D.O.S.(L.R.)3064M Copyright reserve
Page 35 and 36: MONTHLY ANALYSIS OF WIND DIRECTION
Page 37: Mean daily hours of bright sunshine
Page 41 and 42: PHYSIOGRAPHY by M G Bawden The rang
Page 43 and 44: the more gentle Plateau slopes. In
Page 45 and 46: 10° ^rr: Outside project area /,/
Page 47 and 48: and the Gongola. They do not howeve
Page 49 and 50: en to DOS. 3099 F Geological Sectio
Page 51 and 52: spm,^ PLATE 1/1 Song. View from bas
Page 53 and 54: Group IV. Tertiary to Recent Volcan
Page 55 and 56: Type 17. Ancient alluvium (Chad) In
Page 57 and 58: GEOMORPHOLOGY by M G Bawden Over mo
Page 59 and 60: In some areas the Plateau is bounde
Page 61 and 62: apart. They have an asymmetrical cr
Page 63 and 64: Pediments are formed on Basement Co
Page 65 and 66: The characteristics of the sands fo
Page 67 and 68: 70 CO JS 5 o tl •o -t> co 0) * e
Page 69 and 70: TABLE 3 Mean monthly and mean annua
Page 71 and 72: 10° l4 'IT- 12° ,\ Mv / MILES 0 i
Page 73 and 74: The Yedseram and the Ngadda flow no
Page 75 and 76: Groundwater occurs in these igneous
Page 77 and 78: assess the recharge potential more
Page 79 and 80: 10" NgUTl D.O.S.(L.R.)3064Y Copyrig
Page 81 and 82: Figure 7 Generalised soil pattern 0
Page 83 and 84: of clay becomes very small. In the
Page 85 and 86: Soils. Local alluvium is found thro
Page 87 and 88: Two major groups of Ferruginous Tro
Page 89 and 90:
capacity is below 30 meq. These soi
Page 91 and 92:
Category (Map 3) Wd E Fn PI Fp Pc F
Page 93 and 94:
degrees. In the Doksa Plain (Land S
Page 95 and 96:
Mapping Units Mapping Units Mapping
Page 97 and 98:
30 meq per cent soil. Where limesto
Page 99 and 100:
Soil unit (see footnote) 1 2 3 4 Cl
Page 101 and 102:
This kind of soil is dominant throu
Page 103 and 104:
Mapping Units Mapping Units EWe Map
Page 105 and 106:
The soils of the Bama and Ngelewa R
Page 107 and 108:
The clay content of the soils is ne
Page 109 and 110:
Soil patterns on sandy facies of Ch
Page 111 and 112:
Most of the alluvial areas are repr
Page 113 and 114:
American system and the Luvisols of
Page 115 and 116:
^Ä~--«dß Ä'i;'?£^!&JE2 ^Js-j£
Page 117 and 118:
direct impedence to root growth by
Page 119 and 120:
Edaphic Factors LITHOSOLS DEEP, FRE
Page 121 and 122:
The Species List * The species list
Page 123 and 124:
1 APRORMOSIA/DETARIUM WOODLAND/TREE
Page 125 and 126:
4 TERMINALIA spp./COMBRETUM spp. SH
Page 127 and 128:
6 ACACIA HOCKII TREE AND SHRUB SAVA
Page 129 and 130:
9 ANOGEISSUS/DETARIUM SAVANNA WOODL
Page 131 and 132:
12 COMBRETUM spp. SHRUB SAVANNA Phy
Page 133 and 134:
16 ANOGEISSÜS/ACACIA SEYAL SAVANNA
Page 135 and 136:
SPECIES LIST Table 20 Community Num
Page 137 and 138:
19 ANOGEISSUS WOODLAND/TREE SAVANNA
Page 139 and 140:
22 ACACIA SENEGAL/COMBRETUM GLUTINO
Page 141 and 142:
25 ADANSONIA PARKLAND Physiognomy F
Page 143 and 144:
29 ZIZIPHÜS/ACACIA spp. TREE AND S
Page 145 and 146:
33 LEPTADENIA SHRUB SAVANNA Physiog
Page 147 and 148:
37 SOUTHERN ALLUVIAL COMPLEX 37a BO
Page 149 and 150:
38 DEJI VALLEYS COMPLEX The plant c
Page 151 and 152:
FAUNA by P J Aitchison and P E Glov
Page 153 and 154:
available. Cattle, sheep and goats
Page 155 and 156:
TABLE 27 Mammals recorded in the Sa
Page 157 and 158:
TABLE 31 Mammals recorded in the Gu
Page 159 and 160:
POPULATION by P Tuley The distribut
Page 161 and 162:
COMMUNICATIONS by P Tuley The major
Page 163 and 164:
10* ETHNIC GROUPS 12* 14° TEXT MAP
Page 165 and 166:
14" 10" 10° . • * • • + •*
Page 167 and 168:
CHEVALIER M A CHRISTIAN C S and STE
Page 169 and 170:
GROVE A T 1958 The ancient erg of H
Page 171 and 172:
McKEOWN H P J MILLER R E JOHNSTON R
Page 173 and 174:
TOMLINSON P R 1965 Soils of norther
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