59 lines
1.6 KiB
Plaintext
59 lines
1.6 KiB
Plaintext
6. TROPICS
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Beaches, Islands, and Windbreaks
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31. OAHU, HAWAII. 32. MAUI, HAWAII.
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Profile of a stable sand beach with beach convolvulus, and casuarina. Once—stable coast eroding due to beach vegetation destruction:
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This shore can withstand severe storms. "recreation“ can destroy coasts, destabilize snowtields. and erode
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dunes (sand buggies).
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A, a: k « 1 « r
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33. NAITAUBA, FIJI. 33. MOLOKA‘I, HAWAII.
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A hurricane has almost out this island in hall, iollowing deforestation of At the Moloka‘i Plant Research Centre tropical windbreak trials indicate
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the shore—line. Atringe oi mangroves (Rhizopora) is re—stabilising the the importance of windbreaks in reducing stresses on plants and
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sea edges; on low coral islands and shores. the removal of coastal animals especially on islands with salt laden winds, and consistent
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vegetation can destroy the island quickly in cyclones. monsoons and trades.
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1 36. CHITWAN,
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’5 NEPAL
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Traditional low Eu-
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phurbia hedge provides
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windbreak, a habitat for
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spiders. a section oi ..
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bamboo, and demarcates ’
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a cattle lane-way irom
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mustard crop; Eu—
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pharbia ant/quorum is
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often so used, and E.
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tiruca/li' in Botswana; all
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need goggles when
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cuttings are taken to
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prevent eye injury from
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the milky sap.
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35. MOLOKA‘I, HAWAII,
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A "liveset" (cuttings) hedge oi Erythn‘na (”Willi—Willi“) and Danna grass
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(Pennisetum) shelters crop against coastal winds; the grass is cut for
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mulch, and can later be removed as the Erythrina bushes out;
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Casuarina. Leucaena, or Grevillea is often used as permanent
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hedgerow,
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