TY  - Data
T1  - Heihe River Ecological hydrological remote sensing experiment: vegetation coverage data set observed by digital camera in the lower reaches of Heihe River (2014)
A1  - Wang haibo
DO  - 10.12072/ncdc.nieer.db2863.2023
PY  - 2021
DA  - 2021-09-14
PB  - National Cryosphere Desert Data Center
AB  - During the downstream aerial remote sensing test, the coverage of the underlying surface of typical downstream vegetation was observed from July 22 to August 1, 2014. 1. Observation time July 22, 27, 30, 31 and August 1, 2014 2. Quadrat selection and observation method Combined with the distribution characteristics of vegetation in the downstream, large-area (more than 100 m  100 m) and uniform vegetation is selected as the observation sample plot, and a total of 40 observation quadrats are selected, including 2 quadrats of super station and cultivated land station; The observation underlying surface includes Hami melon, Tamarix, reed, weeds, firewood, bitter beans, etc. In each sample plot, a digital camera erected by an iron bar is used for vertical remote control photography, and at least 9 photos are taken forward at equal intervals. After elimination in the later stage, special software is used to process and calculate the quadrat coverage value. 3. Observation instrument Digital camera, Institute of cold and drought, Chinese Academy of Sciences 4. Data storage Excel stores observation record data, and photos store original coverage data
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/90800faa-cbd6-4b2c-82fc-7452decdd9f6
ER  -