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The thesis comprehensively discusses the types of Chinese extreme climate disasters as well as their influence on agriculture, forestry and stockbreeding. With the worsening of green house effect, extreme climate events happen more frequently in more types, with the loss increasing, which greatly restrains Chinese economic development. On the basis of different types of meteorological disasters and...
Based on the data of ETM+ multi-spectral remote sensing image obtained from Landsat-7, adopting the method of decision tree-based classification, the land use and present coverage situation of Zhengzhou city are classified in this article. On the foundation of the analysis of the information content of remote sensing image bands, the sample selection in field and the laboratory test, establish the...
The article, using the each ten day's data of NOAA/AVHRR from 1981 to 2000 and adopting the Maximum-Slope method, Curve-Fitting method and stepwise regression, analyzes the beginning and ending of the growth season of the vegetation in the Huanghe-Huaihe-Haihe (HHH) zone. Meanwhile, the pixel by pixel NDVI map is worked out with typical bands as the sample. The article, through researching on the...
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