Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
The distribution and viability of invasive species (data of 304 parks)_
| No | Species name | No of parks present | Remarks (viability) |
|---|---|---|---|
| 1 | Caragana arborescens | 8 | shrub |
| 2 | Larix decidua | 10 | was not present, except in Kukruse is present in large numbers |
| 3 | Sambucus racemosa | 2 | shrub |
| 4 | Sorbaria sorbifolia | 1 | shrub |
| 5 | Abies sibirica | 8 | present in large numbers |
| 6 | Symphoricarpos albus | 6 | shrub |
| 7 | Abies balsamea | 8 | present in large numbers |
| 8 | Cornus alba | 3 | shrub |
| 9 | Physocarpus opulifolius | 0 | - |
| 10 | Populus alba | 2 | was not present |
| 11 | Acer negundo | 3 | was not present |
| 12 | Rosa pimpinellifolia | 0 | - |
| 13 | Amelanchier spicata | 0 | - |
| 14 | Acer pseudoplatanus | 4 | a few individuals |
| 15 | Populus balsamifera | 0 | - |
| 16 | Acer saccharinum | 2 | was not present |
| 17 | Robinia pseudoacacia | 1 | was not present |
| 18 | Rubus odoratus | 0 | - |
The occurrence of high-risk invasive tree and shrub species in parks by species (data of 304 parks)_
| No | Species name | No of parks | % of parks |
|---|---|---|---|
| 1 | Caragana arborescens | 244 | 80 |
| 2 | Larix decidua | 194 | 64 |
| 3 | Sambucus racemosa | 192 | 63 |
| 4 | Sorbaria sorbifolia | 171 | 56 |
| 5 | Abies sibirica | 168 | 55 |
| 6 | Symphoricarpos albus | 167 | 55 |
| 7 | Abies balsamea | 117 | 38 |
| 8 | Cornus alba | 115 | 38 |
| 9 | Physocarpus opulifolius | 84 | 28 |
| 10 | Populus alba | 75 | 25 |
| 11 | Acer negundo | 71 | 23 |
| 12 | Rosa pimpinellifolia | 70 | 23 |
| 13 | Amelanchier spicata | 58 | 19 |
| 14 | Acer pseudoplatanus | 56 | 18 |
| 15 | Populus balsamifera | 42 | 14 |
| 16 | Acer saccharinum | 18 | 6 |
| 17 | Robinia pseudoacacia | 17 | 6 |
| 18 | Rubus odoratus | 15 | 5 |
Overview of inventories used in the research_ The inventories are compiled by Artes Terrae Ltd_
| Name of the park | Year of the inventory | Name of the project |
|---|---|---|
| Hummuli manor park | 2008 | Reconstruction project of Hummuli manor park |
| Härgla manor park | 2007 | Dendrological inventory of Härgla manor park |
| Kiidjärve manor park | 2009 | Reconstruction project of Kiidjärve manor park |
| Kukruse manor park | 2009 | Reconstruction project of Kukruse manor park |
| Kuremaa manor park | 2006 | Reconstruction project of Kuremaa manor park |
| Lõhavere Hospital park | 2009 | Dendrological inventory of Lõhavere Hospital park |
| Mäetaguse manor park | 2004 | Reconstruction project of Mäetaguse manor park |
| Pagari manor park | 2007 | Reconstruction project of Pagari manor park |
| Puurmani manor park | 2007 | Reconstruction project of Puurmani manor park |
| Püssi manor park | 2007 | Reconstruction project of Püssi manor park |
| Riidaja manor park, I phase | 2006 | Reconstruction project of Riidaja manor park, I phase |
| Rõngu castle hill park | 2008 | Dendrological assessment of Rõngu castle hill park and recommendations for management |
| Saka manor park | 2008 | Reconstruction project of Saka manor park |
| Saku manor park | 2007 | Reconstruction project of Saku manor park |
| Sürgavere manor park | 2008 | Reconstruction project of Sürgavere manor park |
| Õisu manor park | 2008 | Reconstruction project of Õisu manor park |
| Rogosi manor park | 2003 | Dendrological inventory and assessment of Rogosi manor park |