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Academic Publishers Acer amenity árboles Arboretum Arboricultural Arboricultural Association arboriculturist arborists arbres assessment avenue bark beech beneﬁts Betula birch black spruce Britain British broadleaved cable canopy cent classiﬁcation clay conifers containers Council crown damage decay diameter dieback disease Ecology effect environmental established ﬁeld Figure ﬁrst ﬁve forest Forestry Authority Forestry Commission fungi garden grey squirrel growing season growth habitats height Hong Kong identiﬁed increased inﬂuence land landscape London London plane measured method Nature Conservancy Council nature conservation ofﬁcers organic amendments Park photographs pine plantations Platanus potential production protection Quercus regeneration Research road root system Scots pine seedlings shrubs signiﬁcant signiﬁcantly soil speciﬁc spruce stem strategy street trees stress survey timber tree planting Tree Preservation Order tree species trenching trunk types Upper Calder Valley urban forestry urban tree vegetation wood woodland Wrecclesham