Application of 3D Scanner Technology to Analysis the Crown Architecture Parameters of Poplar Plantations Effects of Environmental Factors on Azimuth Distribution in Cryptomeria Tree Rings in Analyzing the azimuth distribution of tree ring δ13C in subtropical regions of eastern China using the harmonic analysis Azimuthal Distribution of Maize Plant Leaves Determined by 3D Digitizer Geometrical Characteristics of Crop Colony in Northwest Shandong Plain