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A linear system model was set up on a regional scale by regarding annual average runoffs of downstream Heihe River as incentives to the eco-system, and MODIS/Terra monthly NDVI (Normalized Difference Vegetation Index) data as responses from the system. With aquifer hydraulics mechanism analysis, the theoretical basis of the lag model was derived on a solution of one-dimensional river-land groundwater...
The objective of this article is to examine the effect of NDVI (Normalized Difference Vegetation Index) images estimation using four geostatistical algorithms: Ordinary Kriging (OK), Universal Kriging (UK), Indicator Kriging (IK), and Sequential Indicator Simulation (SIS). Using the undersampled NDVI data obtained from a NOAA/AVHRR image, both estimates and variances from the three Kriging methods...
The relationship between vegetation growth and groundwater in arid areas is one of the most active research topics in ecohydrology. Due to less precipitation, the vegetation growth has close relationship with groundwater in northwest arid inland areas of China. Research on the ecological effect of groundwater from large scale has important significance in eco-environment recovery and protection. In...
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