25/03/2018 Christophe Orazio.
AR22
Site code AR22
Location Usurbil
Region Pais Vasco
Country Spain
Local name Irisasi
Partner HAZI
Site characteristics
Orientation: NE, Slope:50.0°, Soil :CAMBISOLS, Bedrock : marl
PH :4.3,4.6
Hydrology
Flat soil, without rivers
Short History of the site
The arboretum was planted in an old wood of radiate pine, 40 years old and cut down in the summer of the year 2011. All forest labours after the cut (branches clearings, rests stacking in rows) were done by hand, because the strong slopes. The land is property of Diputación Foral of Gipuzkoa, the provincial Government. Its Forest Service gave permission to IKT/Hazi to establish this plantation at the end of 2011.

Generalities of the site | ||
Species on the site | N of Prov. | Initial tree N |
---|---|---|
Acer pseudoplatanus | 3 | 38 |
Calocedrus decurrens | 1 | 12 |
Castanea sativa | 3 | 115 |
Ceratonia siliqua | 2 | 30 |
Cunninghamia lanceolata | 1 | 11 |
Cupressus sempervirens | 1 | 15 |
Eucalyptus globulus | 1 | 28 |
Eucalyptus gundal | 1 | 15 |
Eucalyptus nitens | 2 | 27 |
Fagus sylvatica | 2 | 27 |
Fagus sylvatica subsp. orientalis | 3 | 47 |
Larix decidua | 5 | 76 |
Liquidambar styraciflua | 4 | 54 |
Pinus brutia | 4 | 40 |
Pinus caribaea var. hondurensis | 1 | 13 |
Pinus elliottii | 2 | 27 |
Pinus nigra subsp. laricio | 2 | 104 |
Pinus nigra subsp. salzmannii | 2 | 30 |
Pinus pinea | 3 | 44 |
Pinus ponderosa | 2 | 26 |
Pinus sylvestris | 4 | 136 |
Pinus taeda | 2 | 30 |
Pseudotsuga menziesii | 8 | 197 |
Quercus ilex subsp. rotundifolia | 3 | 176 |
Quercus petraea subsp. petraea | 5 | 140 |
Quercus robur | 1 | 15 |
Quercus rubra | 2 | 30 |
Quercus shumardii | 1 | 14 |
Quercus suber | 3 | 174 |
Robinia pseudoacacia | 4 | 60 |
Sequoia sempervirens | 2 | 31 |
Thuja plicata | 4 | 61 |