Defences Against Erosion
EW ZEALAND has natural conditions highly conductive to accelerated erosion. Amongst these are steep slopes, very heavy rain in very short periods, concentrated downpours. (The occasion at Tutira when over 20 inches fell in under four days -on two of which the rain gauge ran over and failed to record the full amount-is no unique example); severe and frequent night frosts in the South Island interior; strong and desiccating winds and sharp earthquake shocks, All those features of the New Zealand environment are ideal agents of erosion. Against them nature has concocted for its soil especially protective covers of vegetation-extremely . dense and tangled bush to counter excessive slope and excessive rain storms, and a steep grassland of tussocks to resist drought, frost and wind. All these elements of the New Zealand landscape were new experiences for the immigrant farmer. He frequently either scorned or ignored them.- (From. Winter Course series, "The Use and Abuse of Our Soil," 3YA, June 12.)
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New Zealand Listener, Volume 3, Issue 54, 5 July 1940, Page 8
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163Defences Against Erosion New Zealand Listener, Volume 3, Issue 54, 5 July 1940, Page 8
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