From May 28, 2008 to July 11, 2008, the reflectance and transmittance of plant leaves were observed in the intensive observation area of Linze station. Observation instrument: ASD spectrometer of Beijing Normal University, 350 ~ 2500 nm; Beijing Normal University integral ball. Reference plate information: use 40% reference plate before June 15, and then change to 20% reference plate.
Sample collection location: Linze station quadrat, wulidun farmland quadrat and desert. See the metadata "Heihe integrated remote sensing joint test: layout of quadrat transects in the densified observation area of Linze station" for the distribution and number of quadrat transects, and see the quadrat transect coordinates.xls of the densified observation station of Linze station for the quadrat location.
Sample type: corn, desert green / dry shrub.
Measurement principle: the transmittance or reflectance can be obtained by knowing the calibration coefficient of the reference plate and the change of the relative position of the light source and the blade; Reflectivity measurement: make the light source face the sample port, the upper surface of the blade face the inner wall of the integrating sphere, and the lower surface face the blackbody cover; Transmittance measurement: make the light source on the same side of the sample port, the upper surface of the blade faces the light source, and the lower surface faces the inner wall of the integrating sphere. By measuring the reflection DN value of the target and the reference plate, the reflectivity or transmittance of the target can be calculated according to the ratio of the DN value to the reflectivity or projectivity of the target; The reflectance and transmittance of plant leaves can be obtained by integrating sphere indoors.
Storage mode: this data set includes original data and processed data. The original data is composed of binary files and record tables, and the binary files can be read by viewspecpro software; The processed reflectivity and transmittance are in text format.
Sample collection and observation time: wulidun farmland quadrat (2008-06-242008-06-29, 2008-07-11), Linze station quadrat (2008-05-28, 2008-05-302008-06-192008-06-302008-07-09)
From May 28, 2008 to July 11, 2008, the reflectance and transmittance of plant leaves were observed in the intensive observation area of Linze station
Observation instrument: ASD spectrometer of Beijing Normal University, 350 ~ 2500 nm; Beijing Normal University integral ball. Reference plate information: use 40% reference plate before June 15, and then change to 20% reference plate.
Sample collection location: Linze station quadrat, wulidun farmland quadrat and desert. See the metadata "Heihe integrated remote sensing joint test: layout of quadrat transects in the densified observation area of Linze station" for the distribution and number of quadrat transects, and see the quadrat transect coordinates.xls of the densified observation station of Linze station for the quadrat location.
Sample type: corn, desert green / dry shrub.
Measurement principle: the transmittance or reflectance can be obtained by knowing the calibration coefficient of the reference plate and the change of the relative position of the light source and the blade; Reflectivity measurement: make the light source face the sample port, the upper surface of the blade face the inner wall of the integrating sphere, and the lower surface face the blackbody cover; Transmittance measurement: make the light source on the same side of the sample port, the upper surface of the blade faces the light source, and the lower surface faces the inner wall of the integrating sphere. By measuring the reflection DN value of the target and the reference plate, the reflectivity or transmittance of the target can be calculated according to the ratio of the DN value to the reflectivity or projectivity of the target; The reflectance and transmittance of plant leaves can be obtained by integrating sphere indoors.
Sample collection and observation time: wulidun farmland quadrat (2008-06-242008-06-29, 2008-07-11), Linze station quadrat (2008-05-28, 2008-05-302008-06-192008-06-302008-07-09)
Good data quality
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CSTR:11738.11.ncdc.NIEER.2021.1720
10.12072/ncdc.NIEER.db1867.2022