%0 Dataset
%T Heihe River eco hydrological remote sensing experiment: li-8100 observation soil respiration data set in the lower reaches of Heihe River (July August 2014)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/07f65c8c-2a2e-428a-995c-2565f99fedc6
%W NCDC
%R 10.12072/ncdc.nieer.db3560.2023
%A Ren zhiguo
%K Soil respiration;soil;soil temperature
%X During the downstream aerial remote sensing test, the observation of surface soil respiration of typical downstream vegetation was carried out from July 23 to August 2, 2014. 1. Observation time The observation was conducted once a day from July 23 to August 2, 2014, with one day off on July 25 2. Quadrat selection and observation method Combined with the downstream vegetation characteristics and site distribution, the vegetation close to the site with an area distribution of more than 100 m  100 m is selected as the observation sample plot, and a total of 5 observation sample plots are selected, including Populus euphratica and Tamarix mixed forest, Populus euphratica forest, Tamarix group, bare land and melon land; In each plot, select 3-5 representative points and drive the soil ring one day in advance (the inner diameter is 19.5cm, the outer diameter is 20.0cm and the height is 12cm. Try to keep the driven PVC about 5cm above the ground), so as not to disturb the vegetation and litter on the ground as much as possible. After 24h balance, the soil respiration rate returns to the original state, avoiding the fluctuation of soil respiration rate caused by the placement of the base. The observation period is from 8:00 a.m. to 12:00 a.m. (during this period, the soil respiration is relatively stable and can represent the soil respiration rate of the whole day). The li-8100 open circuit automatic soil carbon flux tester (model 8100-103) is used to measure the sample points in each sample plot respectively, and the cyclic observation of 5 sample plots is completed every day, The average value of the observed sample points of each sample plot is taken as the soil respiration value of the sample plot. 3. Observation instrument Li-8100 (Li COR, USA) open circuit automatic soil carbon flux tester, Institute of earth environment, Chinese Academy of Sciences 4. Data storage This data set includes data in *. 81x format exported by li-8100 (opened with li-8100 supporting soft