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To study the multiscale characteristics of ecohydrological processes in the Heihe River Basin, an intensive flux observation matrix was established, which consisted of mainly 17 eddy covariance (EC) flux stations in a 5.5 km $\times$ 5.5 km area of the Zhangye oasis. Formal observations began in June and continued through September 2012. Before the main campaign, an intercomparison for all instruments...
The irrigation of oasis farmland in arid regions mainly depend on water introduced by canals, so evaporation loss from canals is important to water resource, because long canals have been constructed for farmland irrigation and a large deal of water is evaporated from canal surface. In this study, canals in Zhangye (the middle reaches of Heihe River), Gansu, China were taken as the main research object,...
The dynamic monitoring and mapping of soil salinization is a practical significance work at present. In this paper, the middle reaches of Heihe River, China, was taken as a study case to discuss the effectiveness of extracting saline land information applying decision tree approach, based on Landsat TM data acquired on Sep.23, 2007. Through visual interpretation and statistical analysis of spectral...
From fitting coefficients a, differences of secelected paired towers were 6∼27% and most of determination coefficients were closed to 1. From σ, the differences were less than 10.0W/m2 for sensible heat flux and less than 5µmmol/m2/s for CO2 flux while 29.4∼44.1W/m2 for latent heat flux which indicated the big differences of evaporation among the stations. All these data will support high quality...
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