During a study of desertification on the edge of the Sahel, Fig. 1 shows two neighbouring grazing areas. One area has a fenced enclosure that livestock cann...

Assessment: Geography 9230 | Paper 1 Mock 01 | Written Paper 1 Subject: Geography - 9230

Question 1 Report

9230-p1-hotdesert-08-grazing-enclosure

During a study of desertification on the edge of the Sahel, Fig. 1 shows two neighbouring grazing areas. One area has a fenced enclosure that livestock cannot enter. Table 1 gives observations collected at the end of the dry season. The community wants to protect soil from wind erosion.

AreaVegetation cover (%)Mean soil depth (cm)
Inside enclosure4618
Outside enclosure117

(a) Which area has the deeper mean soil? [1]
(b) Outline one way vegetation can reduce wind erosion in this dry landscape. [2]
(c) Draw two tufts of grass on Fig. 1 in the area where vegetation should be increased. [1]

Answer Details

(a) Inside enclosure [1] (b) Vegetation roots bind/hold soil [1]; stems reduce wind speed/trap moving sediment [1]. (c) Two grass tufts drawn in the bare, grazed area outside the enclosure [1]

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