LA - Leaf Area Index (LAI) and Radiation Measurements
Form: LAM - Leaf Area Index (LAI) measurement outcome
Form introduced: 2009
Last change: 2018
!Sequence; code_country; plot; survey_id; point_id; field_of_view; date_measure; time_measure; lai_max_point; sai_point; date_sai; gap_fraction_point; omega_point; code_sky; code_sun; other_observations
| POSITION | FIELD | DESCRIPTION |
|---|---|---|
| 1 | Sequence (integer) |
Description: Continuous number to identify the line of the submitted file Format: I |
| 2 | code_country (code) M K |
Description: ID of the country Format: I Dictionary: d_country |
| 3 | plot (code) M K |
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 |
| 4 | survey_id (integer) M K |
Description: LAI survey ID Format: I Explanatory Item: 191 Introduced: 2011 |
| 5 | point_id (integer) M K |
Remarks: 99 = plot mean calculated Format: I Explanatory Item: 195 Introduced: 2018 |
| 6 | field_of_view (degrees) |
Description: Field of View used for analysis Missing value (NULL): -999 Remarks: may be less than 180° in the case of measurments on a slope Format: I Introduced: 2018 |
| 7 | date_measure (DDMMYY) M K |
Description: Date of measurement Format: Date Introduced: 2018 |
| 8 | time_measure (HHMMSS) M K |
Description: Time of field observation Remarks: E.g. ‘9:45:53’ = ‘094553’ Format: C Introduced: 2018 |
| 9 | lai_max_point (m²/m²) |
Description: LAI of this point at date of maximum foliation Format: F Introduced: 2018 |
| 10 | sai_point (m²/m²) |
Description: SAI of this point in the leafless stage in winter Missing value (NULL): -999999 Format: F Introduced: 2018 |
| 11 | date_sai (DDMMYY) |
Description: Date of related SAI measurement Format: Date Introduced: 2011 |
| 12 | gap_fraction_point (%) |
Description: Measured gap fraction at each point Format: F Introduced: 2018 |
| 13 | omega_point |
Description: Clumping coefficient used in clumping correction (point-level) Format: F Introduced: 2018 |
| 14 | code_sky (code) |
Description: Sky conditions during the measurement Format: I Dictionary: d_sky_condition Introduced: 2011 |
| 15 | code_sun (code) |
Description: Sun position Format: I Dictionary: d_sun_position Introduced: 2011 |
| 16 | other_observations (FREE TEXT) |
DB Column: other_obs Description: Supplementary comments Format: C |