| Soil erosion is one of the most serious environmental problems. It restricts the economic developments of the areas with the problems of soil and water losses overly, soil and water conservation workers has been increasing attention to the the vegetation measures which to control soil erosion with a three-dimensional multi-point anti-corrosion characteristics. At present, the vegetation restoration of the building has been the major measure. To play the function of soil and water conservation forest bitterly, we must fully understand the growth and structural characteristics of plants. In addition, the paper virtualize the plants based on the virtual plants theorise and methods, which can help researchers to study the growth and configuration of plants and which provide a new scientific methods for the study of soil and water conservation plants.Phyllostachyr pubescens (Mazel ex H. de Lehaic) is a unique, the most important economic bamboo species in china; in addition, bamboo has the dense bamboo canopy and developed underground root structure, and has good water conservation and soil conservation function. The paper used bamboo as the object of research to discuss the growth rule of bamboo in JingYun mountain, the structural factors such as ground diameter, DEH(diameter at eyes height), DBH (diameter at breast height) , height of culm with no branches and tree height based on the subjects such as forestmensuration, mathematicalstatistics, close range photogrammetry and etc. Furthermore, the planar structure of Phyllostachys pubescens also was stimulated according to the relationship among the different factors. Meanwhile it discussed photogrammetric way to collect structural and modal data of bamboo. The results went as follows:(1) The height of bamboo shoot grows very rapid, The most height growth of bamboo shoot in a day is 87.7cm, is 1.8 times in night. Meanwhile, the height growth of bamboo shoot accord whit the logistic curve, and imitation effect is preferable, so the equation can forecasts the growth of bamboo shoot.(2) The 10.1 cm median of DBH account for the most proportion of 23.68%. The distribution presents much in middle and few in the both sides, and which obey the normal shool. The diameter of bamboo is decrescent gradually, and can be imitate with y = ax + b, therein to, a represents the change speed with diameter of bamboo. Meanwhile, with the need of the simulation of bamboo, this paper imitates the change of diameter with the height, and educes the velocity. In the four sample site, the change velocities are different little.(3) With analyzing the relation of DBH and height of under branch of one to seven, the relations present the line correlativity, which imitate with H = b + aD. It indicate that the larger DBH of bamboo, the higher height of under branch. The correlativity of DBH and terra-diameter and eyebrow-diameter present the line relations, which explain the configuration of triangle of the bamboo stalk. The paper imitates the relation of DBH and bamboo highness with the equation of line, logarithm and conic, and all gain the better imitation coefficient. With the integration compare of the number of parameter and imitation coefficient, the paper considers that it is better to simulate the relation of DBH and highness with the logarithm equation.(4) Based on the close-range Photogrammetry, the paper study the configuration parameter of bamboo, with the content result: the error is DBH 0.98%, DEH -1.60%, under branch 0.34%.(5) The plants exist the comparability in the natural at large. Based on the configuration parameter of bamboo, the paper applies the arithmetic of two fork tree to simulate the bamboo configuration and come true the vision of bamboo with the comparability of bamboo stalk and branch. |
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