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The Pearl River delta is one of the most densely populated areas in China, with high urbanization and rapid economic development. The drama change of land use in recent years has been matched by rising pollution of water. With monitoring data of water quality and Landsat OLI8 images 2013, this paper analyzed the relationship between land use and water quality in the river net area of Pearl River delta...
To further promote the study of the carbon sinks and the quantitative analysis of fixing carbon and releasing oxygen of Phyllostachys pubescens which was the principal bamboo species in subtropical area, diurnal variations net photosynthetic rate were measured using photosynthesis methods in this study. The results showed that: there were obvious differences in carbon fixation and oxygen release among...
Due to the weak energy and nonstationarity, incipient fault characteristic signals are usually submerged by vibration signals of rotary machine and noise. Based on the multi-resolution feature and time-frequency localization feature of Wavelet Transform, a method to extract fault characteristic signals by decomposing them into corresponding time-frequency segmentations is presented. The noise is attenuated,...
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