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A Study on Configuration Structure and Simulation of Bamboo-a Economical Plant for Soil and Water Conservation

Author: ZhongWeiWei
Tutor: LiuYiJun；ShiDongMei
School: Southwestern University
Course: Soil and Water Conservation and Desertification Combating
Keywords: Bamboo Morphology Virtual plant Photogrammetry Soil and Water Conservation
CLC: S795
Type: Master's thesis
Year: 2007
Downloads: 117
Quote: 4
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Abstract

Soil erosion is the most serious environmental problems, it greatly limits the erosion region's economic development. Watershed management as one of the three measures of biological measures has been much emphasis on soil and water conservation workers. Vegetation on soil erosion control measures in a three-dimensional multi-point anti-corrosion characteristics. Currently, vegetation restoration fragile ecological environment construction as the main measures. Soil and Water Conservation biological measures, mainly through the establishment of plantations to prevent all forms of soil erosion, and plantation growth conditions in turn affect its soil and water conservation function of the play. In order to better play and water conservation forest soil and water conservation features, you must fully understand the structure of plant growth and soil and water conservation features. In addition, economic plants for soil and water conservation visual simulation-based virtual research theories and methods to help researchers very intuitive on plant growth and morphological study of the structure, economic plants for the soil and water conservation research provides new scientific approach. Bamboo (Phyllostachyr pubescens Mazel ex H.de Lehaic) is endemic to China, the most important economic bamboo species, in addition, because bamboo dense canopy and well-developed underground root structure, but also has good water conservation and soil conservation functions. In this paper, soil and water conservation forestry, forest cultivation, tree measurement, mathematical statistics, virtual reality technology, science and other subjects close range photogrammetry based, ecological, economic and social benefits of good soil and water conservation species - bamboo as the research object, discusses the growth pattern of Jinyun Mountain bamboo shoots and bamboo diameter, eyebrow circumference, diameter, branch height, plant height correlation between morphological structure factor and thus the two-dimensional morphology on bamboo virtual visualization; addition, bamboo Extraction of morphological parameters were photogrammetric methods discussed. The main conclusions are as follows: (1) shoots growth pattern. The high bamboo shoots grow very rapidly, and its growth in dozens of days within the bamboo, the study measured the daily maximum up to 87.7cm height growth in net amount; and shoot growth of different day and night, the night is about the growth of growth of 1.8 times the amount of daylight. The high growth in line shoots the logistic curve, reflecting the growth of shoots into cumulative period of fast growth period of moderate growth; curve equation after x ~ 2 test, goodness of fit is R ~ 2 = 0.9682, show that equation proposed together better, predicted and actual values ??basically consistent equation can be used to predict future values. (2) bamboo 10.1cm diameter in the group is the group of the largest proportion of the total number of samples up to 23.68%, showing the distribution among a large proportion of two small state, follow a normal distribution. Bamboo section between the diameter of the portion from the base to the slightly smaller gradually, the change process by the linear equation y = ax b fitting, a represents the rate of change of the measured sample to the difference between the rate of change is small, whereby the description Jinyun bamboo growth ground elevation, slope position, slope and other environmental factors have little effect on the properties of bamboo growth. (3) The statistics on bamboo diameter with one to seven under the high correlation between the results of the analysis, diameter and branch height both showed linear correlation, indicating: bamboo DBH larger branch height higher; addition , bamboo DBH and ground diameter and circumference also showed a linear relationship between the eyebrows, fully illustrated bamboo stalk-shaped triangular distribution was uniform change; bamboo diameter and plant height in the analysis of relations with linear, logarithmic and quadratic equations DBH were fitted with full-height bamboo, have been given a better goodness of fit, goodness of fit R ~ 2 are: 0.9778,0.9875,0.9982. Taking into account the number of parameters and the comparison of goodness, this study suggests that the relationship between bamboo DBH and height simulations to logarithmic equation is more reasonable. (4) through the close-range photogrammetry techniques bamboo morphological indicator parameters were studied, and the resulting photogrammetric measurement value and the actual value is compared to the error were: DBH 0.98% -1.60% around the eyebrow, branch height 0.34 % obtained satisfactory results. (5) the use of bamboo stalks and branches of self-similar, in the morphology of the extracted parameters bamboo, based on the application of the basic tree generation algorithm, binary tree algorithm, bamboo morphology of a simple virtual visualization.

A Study on Configuration Structure and Simulation of Bamboo-a Economical Plant for Soil and Water Conservation

Abstract

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