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Quantitative models of Raman spectroscopy for five kinds of traditional Chinese medicine containing CaCO₃ based on an improved siPLS DCA Ordination, Quantitative Classification and Environmental Interpretation of Spruce and Fir Communities in Northwest Sichuan and South Gansu Regional characteristic scale of NDVI based on wavelet analysis Characteristic substances and photosynthetic characteristics of Lolium perenne L. with waste crumb rubber filled in turf medium under trample stress Evaluation of group clustering synchronization release of Daidai Flavones Dropping Pills based on characteristic spectrum Hyper-spectral estimation of soil organic matter content based on wavelet transformation. Recognition of landscape characteristic scale based on two-dimension wavelet analysis. Landscape heterogeneity of mountainous and hilly area in the western Henan Province based on moving window method ESI-MS characteristic spectra of alkaloids inBulbus Fritillariae Characteristic spectrum analysis of Panax quinquefolium from Liuba by HPLC-ESI-MS Scale issues in ecology: concepts of scale and scale analysis The characteristic scales of the urban landscape in the Nanjing metropolitan region Spatial scale effect of land use landscape pattern in Yongdeng County, Gansu Province, China. Quality evaluation system of Astragali Radix by chemometrics Comparison on spatial scale analysis methods in landscape ecology Comparative study on HPLC characteristic spectra of Humuli Scandentis Herba from different habitats in Hebei province Determination of atractylodin, atractylon, and β-eudesmol and study on characteristic spectrum of Atractylodis Rhizoma