塞威氏苹果树台形态特征及梯级变化

doi:10.12118/j.issn.1000-6060.2019.02.09

Abstract

Abstract: Taking the Malus sieversii forest in the western Tianshan Mountains as an example, this paper obtained the morphological parameters of the tree-platforms of the Malus sieversii in the western Tianshan Mountains using the Leica TS06 Reflectorless Total Station, and quantitatively analyzed the three-dimensional morphological characteristics and spatial distribution pattern. The DEM (Digital Elevation Model, DEM) of the tree-platforms of the Malus sieversii forest was constructed to study its micro-geomorphic landscape. The result shows as follows: (1) The shape of the Malus sieversii tree-platform in the study area is relatively regulated, and the aspect ratio is in the range between 0.6579 and 1.4310. It is semi-circular or fan-shaped. The position of the Malus sieversii (ie, the center of the plot) is displayed being darker and prominent with higher elevation values. (2) The slope, bottom diameter and bottom area, surface area, volume, length, width, height and aspect ratio of the Malus sieversii tree-platform are significantly correlated. Among them, the slope, the height and the length show a significant linear positive correlation, with R2 being 0.96 and 0.90 respectively; the bottom diameter and the bottom area, surface area and length show significant linear correlation with R2 being 0.61, 0.46, and 0.47 respectively. The research result can provide useful data to support the rational use of forest vegetation, soil and water conservation, and nutrient storage of wild apple trees.

Key words: tree-platform, slope, bottom diameter, Malus sieversii, West Tianshan Mountains

XU Shi-wei , LAI Feng-bing, CHEN Meng-yu, ZHU Xuan, LI Hong-jun, CHEN Shu-jiang, HUANG Tie-cheng, JIA Xiang. Morphological characteristics and its clinal variation of the tree-platform of Malus sieversii[J].Arid Land Geography, 2019, 42(2): 305-313.

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Morphological characteristics and its clinal variation of the tree-platform of Malus sieversii

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