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Kauri (Agathis australis) is generally associated with intense podzolisation, but little research has been carried out to substantiate this. We studied soil profiles, grain size distribution patterns and clay mineralogy under kauri and broadleaf/tree fern vegetation in the Waitakere Ranges, North Island, New Zealand. Kauri appears to cause increased breakdown of fines (0–10 μm) in the top of the profiles...
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