%0 Dataset
%T Heihe River eco hydrological remote sensing experiment: observation data set of soil respiration in the middle reaches of Heihe River Basin (2012)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/7e39ae66-169a-4597-98ee-02473759aec0
%W NCDC
%R 10.12072/ncdc.nieer.db3563.2023
%A Li xin
%A Ma mingguo
%A Wang jing
%K Soil;soil respiration;Li － 8100
%X This data set is the soil respiration rate measured by the open circuit soil carbon flux measurement system li-8100 (li-cor, Lincoln, NE, USA) at the Damon super station. 1) Measurement purpose The purpose of soil respiration rate measurement is to measure the diurnal variation characteristics of soil respiration by li-8100, so as to provide scientific basis and parameters for evaluating the carbon cycle and carbon balance of farmland ecosystem in arid area. 2) Measuring instruments and methods  Measuring instrument: open circuit soil carbon flux measuring system li-8100 (li-cor, Lincoln, NE, USA). Measurement method: the soil breathing chamber is placed on the PVC ring (10 cm in diameter and 5 cm in height). The PVC ring is inserted into the soil for 1 ~ 2 cm and placed 1 day before the measurement. The full-automatic observation is adopted, the solar panel is used for power supply, and the instrument is equipped with a data acquisition instrument to automatically record the observation data. 3) Measurement time The soil respiration rate was continuously observed during the main growing season of maize from June 19 to September 15, 2012. 4) Data processing Regularly copy the observation data (*. 81x) from the data collector and convert it into text format file through li-8100 (m) PC client v2.0.0 software to obtain soil respiration data