Carbon Use Efficiency of the First Ratoon Cane by Eddy Covariance Technique

Ergodicity test of the eddy-covariance technique

The ergodic hypothesis is a basic hypothesis typically invoked in atmospheric surface layer (ASL) experiments. The ergodic theorem of stationary random processes is introduced to analyse and verify the ergodicity of atmospheric turbulence measured using the eddy-covariance technique with two sets of field observational data. The results show that the ergodicity of atmospheric turbulence in atmo...

Assessing the Eddy Covariance Technique for Evaluating the Carbon Balance of Ecosystems

Comparison Methods Phosphate Application to Ratoon Cane

Using a virgin Table Mountain Sandstone (Inanda series) soil with a low P status and high sorption capacity, a comparison of methods of superphosphate application to ratoon cane was carried out. By means of P-32 labelled superphosphate theuptake of fertilizer P by the plant was studied in first ratoon cane at intervals f rob 24 to 18 weeks after the date of treatment application. Uptake of labe...

First eddy covariance flux measurements by PTR-TOF.

The recently developed PTR-TOF instrument was evaluated to measure methanol fluxes emitted from grass land using the eddy covariance method. The high time resolution of the PTR-TOF allowed storing full mass spectra up to m/z 315 with a frequency of 10 Hz. Three isobaric ions were found at a nominal mass of m/z 33 due to the high mass resolving power of the PTR-TOF. Only one of the three peaks c...

Assessing Ecosystem Carbon Balance: Problems and Prospects of the Eddy Covariance Technique