GGR 107 lecutre 4 - GGR 107 Environment Food and People...

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1 GGR 107 Environment Food and People Lecture Oct. 2nd The Hydrological Cycle The Niger River, Mali
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2 Soil erosion and ‘check dams’ The Loess Plateau – northern China
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3
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4 View downstream of the dam
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5 View upstream of the dam
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6
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7 no river = no Mali
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8 towards the end of the dry season
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9 The Hydrological Cycle THE BIG QUESTION : CAN HUMANS LEARN TO LIVE WITHIN THE LIMITS OF THE BIO-GEO-CHEMICAL CYCLES on which they – and all life – depend?
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10 The Hydrological Cycle WHAT DO WE HAVE TO DO TO AVOID AN EASTER ISLAND KIND OF OUTCOME? Relevant because both are (nearly) closed systems.
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11 THE BASIC CONCEPT OF THE HYDROLOGICAL CYCLE T E
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12 THE HYDROLOGICAL CYCLE THE WATER BALANCE
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13 THE HYDROLOGICAL CYCLE NOTE THE IMPORTANCE OF GROUNDWATER IN THE HYDROLOGICAL CYCLE: IT IS A FORM OF FREE STORAGE , & IS LESS PRONE TO CONTAMINATION THAN SURFACE WATER
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THE HYDROLOGICAL CYCLE HOWEVER IT IS NOT VISIBLE. GROUNDWATER CAN BE DIFFICULT TO
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GGR 107 lecutre 4 - GGR 107 Environment Food and People...

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