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This study examined the impact of rapid shift from drought to flood on vegetation using Moderate Resolution Imaging Spectroradiometer (MODIS) and meteorological data, taking Jiangxi province as example. The Normalized Difference Vegetation Index (NDVI), Vegetation Condition Index (VCI) and Standardized Precipitation Index (SPI) were extracted to evaluate the spatial and temporal characteristics of...
Small watershed dominates the relief at hillslope scale of red soil. The soil hydraulic properties are essential in unsaturated zone modeling. In order to study the impact of soil hydraulic parameters on simulated moisture in the region of low hilly area and to develop water-saving agriculture along gentle slope upland in northeast Jiangxi Province, the numerical modeling of soil moisture along the...
The high temperature damage index series of 25 stations were calculated from 1960 to 2007, and these series were consisted of a matrix. After doing EOF to the matrix, two meaningful eigenvector fields were got, and therefore two main patterns about the spatial distribution of the high temperature damage to Rice in Jiangsu were found: the whole distribution pattern and the south-north distribution...
This study reported the spatio-temporal variability of terrestrial net primary production (NPP) in the lower-middle reaches of Yangtze River from 2000 to 2006. The impact of climate change was also described. According to the analysis results, mean NPP of this region during 7 years was 535.8 gCm−2yr−1, which was higher than that of the nation during the same period. It was found that NPP showed great...
In order to study the soil moisture of peanut fields in the region of red soil and to develop water-saving agriculture along gentle slope upland in southern China, the numerical modeling of soil moisture dynamics was established, based on Richard movement equitation. The simulated soil moisture was in good agreement with measured data. Modeling analysis showed that the soil hydraulic parameters are...
Image fusion techniques can improve the quality, and increase the application of satellite images. The wavelet transforms provides a preeminent approach for the improvement of the spatial resolution with minimal distortion of the spectral content of the source image. Three types of wavelet bases and four types of wavelet transforms are used to perform the fusion between MODIS and NOAA images. The...
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