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| arboretum | |||
| coppice with standards A traditional system of woodland management whereby timber trees are grown above a coppiced woodland. It is used in particular as a method of exploiting oakwoods, in which all the trees except a rather open network of tall, well-formed oaks - the standards at about fifty per hectare - are felled, leaving plenty of space for hazels and other underwood to grow and be coppiced at intervals of ten to fifteen years | |||
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arboret : 29 短语, 2 学科 |
| 农业 | 6 |
| 林业 | 23 |