TY  - Data
T1  - Heihe River eco hydrological remote sensing experiment: observation data set of coverage and biomass in the middle reaches of Heihe River Basin (2014)
A1  - Geng Liying
A1  - None
A1  - Tan Junlei
A1  - Ma mingguo
DO  - 10.12072/ncdc.NIEER.db2491.2022
PY  - 2021
DA  - 2021-09-14
PB  - National Cryosphere Desert Data Center
AB  - This data includes the vegetation coverage data set of Daman super station, wetland, desert, desert and Gobi in one growth cycle and the biomass data set of corn and wetland reed in one growth cycle. The observation time began on May 10 and ended on September 11, 2014. 1 coverage observation 1.1 observation time 1.1.1 super station: the observation period is from May 10 to September 11, 2014. It is observed every 5 days before July 20 and every 10 days after July 20. A total of 17 observations have been made. The specific observation time is as follows; Super stations: 2014-5-10, 2014-5-15, 2014-5-20, 2014-5-25, 2014-5-30, 2014-6-10, 2014-6-15, 2014-6-20, 2014-6-25, 2014-6-30, 2014-7-5, 2014-7-10, 2014-7-15, 2014-7-20, 2014-8-5, 2014-8-17, 2014-9-11 1.1.2 other four stations: the observation period is from May 20 to September 15, 2014, once every 10 days, and a total of 11 observations have been made. The specific observation time is as follows; Other four stations: 2014-5-10, 2014-5-20, 2014-5-30, 2014-6-10, 2014-6-20, 2014-6-30, 2014-7-10, 2014-7-20, 2014-8-5, 2014-8-17, 2014-9-11 1.2 observation method 1.2.1 measuring instrument and principle: take photos with a digital camera, place the digital camera on the instrument platform at the front end of the simple support rod, keep the shooting vertical and downward, and remotely control the camera to measure data. The observation frame can be used to change the shooting height of the camera and realize targeted measurement for different types of vegetation. 1.2.2 quadrat design Super station: a total of 3 sample plots are taken, and the quadrat size of each sample plot is 10 × 10 meters. Take photos along two diagonals during each measurement of each sample plot, and take 9-10 photos in total; Wetland station: a total of 2 sample plots are taken, and the quadrat size of each sample plot is 10 × 10 meters, take 9-10 photos for each measurement; Other 3 stations: select 1 sample plot, and the quadrat size of each sampl
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/dc1d0ad1-389a-4740-a6b7-f4dbbf799d09
ER  -