CC - Visual Assessment of Crown Condition
Form: TRC - Crown condition parameters Level II
Form introduced: 2007
Last change: 2022
!Sequence; plot; date_survey; team_id; tree; tree_species; code_tree_damage_status; removal_mortality; defol; social_class; shading_crown; visibility; crown_assess; fruiting_assess; fruiting_whole; flowering_assess; flowering_whole; transparency; form_crown; secondary_shoots; cdrd_n; apical_shoot; tree_age_class; age_method; code_ref_tree; other_observations
| POSITION | FIELD | DESCRIPTION |
|---|---|---|
| 1 | Sequence |
Description: Continuous number to identify the line of the submitted file Format: I |
| 2 | plot M |
DB Column: code_plot Description: Observation plot number Remarks: A unique number (per country) given to the permanent plot during the selection or installation Format: I |
| 3 | date_survey (DDMMYY) M K |
Description: Date of survey Remarks: E.g. ‘9th October 2012’ = ‘091012’ Format: Date |
| 4 | team_id M |
Description: Field team ID Missing value (NULL): -99 Remarks: Please use ‘-99’ in case the team_id is not known Format: I Explanatory Item: 88 Introduced: 2011 |
| 5 | tree M K |
DB Column: tree_number Description: Tree number (as marked during installation) Format: I Explanatory Item: 41 |
| 6 | tree_species M |
DB Column: code_tree_species Description: Coded tree species Remarks: Category -9 (‘Not relevant’) is not valid for this form. Please select a proper tree species. Format: I Dictionary: d_tree_spec |
| 7 | code_tree_damage_status M |
Description: Damage status of the tree Remarks: This information is necessary to avoid double coding of a tree as e.g. both dead and alive, or both healthy and damaged Format: I Dictionary: d_tree_damage_status Introduced: 2022 |
| 8 | removal_mortality M |
DB Column: code_removal Description: Removal/Mortality - status of tree Format: I Dictionary: d_removal_mortality_ccgr Explanatory Item: 43 |
| 9 | defol (%) |
DB Column: code_defoliation Description: Needle/leaf loss in the assessable crown as compared to a reference tree Remarks: Observed regardless of the cause of foliage loss (e.g. it includes damage by insects) Format: I Dictionary: d_defoliation |
| 10 | social_class |
DB Column: code_social_class Description: Social class (height of a tree relative to the surrounding trees) Format: I Dictionary: d_social_class Explanatory Item: 45 |
| 11 | shading_crown |
DB Column: code_shading Description: Crown shading Format: I Dictionary: d_shading |
| 12 | visibility |
DB Column: code_visibility Description: Degree to which different parts of the assessable crown can be viewed from the ground Remarks: Some parameters can still be assessed when only back-lighting is present Format: I Dictionary: d_visibility |
| 13 | crown_assess |
DB Column: code_crown_assess Description: Assessable part of the crown Format: I Dictionary: d_crown_assess Explanatory Item: 303 Introduced: 2011 |
| 14 | fruiting_assess (M) |
DB Column: code_fruit_assess Description: Annual seed production of the tree in the assessable crown Mandatory for: Fagus spp. and Picea spp on level II core plots Remarks: Only the fruit of the respective assessment year is to be considered Format: F Dictionary: d_fruiting Explanatory Item: 50 |
| 15 | fruiting_whole (M) |
DB Column: code_fruit_whole_crown Description: Annual seed production of the tree in the whole crown Mandatory for: Fagus spp. and Picea spp on level II core plots Remarks: Only the fruit of the respective assessment year is to be considered Format: F Dictionary: d_fruiting Explanatory Item: 50 |
| 16 | flowering_assess |
DB Column: code_flow_assess Description: Flowering in assessable crown Format: I Dictionary: d_flowering Explanatory Item: 50 |
| 17 | flowering_whole |
DB Column: code_flow_whole_crown Description: Flowering in whole crown Format: I Dictionary: d_flowering Explanatory Item: 50 |
| 18 | transparency |
DB Column: code_foliage_transparency Description: Additional amount of skylight visible through the crown compared to the amount of skylight visible through a fully foliated crown Format: I Dictionary: d_foliage_transparency Explanatory Item: 49 |
| 19 | form_crown |
DB Column: code_crown_form Description: Crown form / morphology Remarks: Classifications exist for Picea spp. and Pinus sylvestris Format: I Dictionary: d_crown_form Explanatory Item: 304 |
| 20 | secondary_shoots |
DB Column: code_shoot_epico Description: Secondary shoots / Epicormics (Shoots that have developed from dormant buds) Format: I Dictionary: d_shoot_epicormic Explanatory Item: 52 |
| 21 | cdrd_n (M) |
Description: Relative crown distance (diameter related distance to surrounding trees in main directions) Mandatory for: deciduous stands on level II core plots Remarks: Calculation: [Score1 + Score2 + Score3 + Score4] / 4 = CDRD_N Format: F Dictionary: d_cdrd_n Explanatory Item: 307 Introduced: 2011 |
| 22 | apical_shoot (M) |
DB Column: code_apical_shoot Description: Apical shoot architecture (assessment of growth patterns of the topmost twigs of crown) Mandatory for: Level II core plots Remarks: Only on beech (Fagus sylvatica) Format: I Dictionary: d_apical_shoot Explanatory Item: 306 Introduced: 2011 |
| 23 | tree_age_class (M) |
DB Column: code_tree_age Description: Tree Age in 20 year classes Mandatory for: Level II core plots Format: I Dictionary: d_tree_age Introduced: 2011 |
| 24 | age_method (M) |
DB Column: code_age_method Description: Method of age assessment Mandatory for: Level II core plots Format: I Dictionary: d_age_determination Introduced: 2011 |
| 25 | code_ref_tree |
Description: Reference tree Format: I Dictionary: d_ref_tree Introduced: 2011 |
| 26 | other_observations (FREE TEXT) |
DB Column: other_obs Description: Supplementary comments Format: C |