Study On Tree Measurement MINI Super Station And Technology Application

In this study, starting from the theory of forest resource survey and monitoring. Based on similar triangle geometry principle, the principle of trigonometric function, laser distance measuring principle, the principle of photogrammetry and image recognition, computer vision theory as the theoretical basis, In computer science and technology, integrated circuit technology, pattern recognition, and resolution of monolithic photogrammetry technology, etc as the means. Developed multi-functional MINI tree super station meter and the specific technology application tests have been carried out to verify its functionality. This paper expounds the background information under the condition of forest measuring technology principle and method. Studied on tree measuring principle and method, sample plot survey technology principle and method. Through experiment contrast analysis, Verify the new technology, new methods of convenience and high efficiency. Solves the existing forest resources field investigation and monitoring technology in China method is time-consuming, laborious, poor accuracy and field investigation data to secondary school such as difficulties in the process. For the implementation of precision forestry in China and the construction of forestry information platform to provide effective technical support and technical services. The main research contents and conclusions are as follows:1. The development of the MINI tree super stationAccording to the situation of forest resources survey technology in China, draw lessons from foreign forest resources survey equipment technology, application of a variety of technical principle and method of science and technology, With microelectronics integration technology successfully developed a multi-functional MINI tree super station suitable to China’s forest resource survey technical requirements.2. Study on tree measurement principle and methodResearch based on the multi-function MINI tree super tree measurement function of the instrument, which can realize arbitrary trunk diameter, tree height measurement and volume. After a lot of experimental verification in the same area of different tree species, its diameter at breast height measurement precision range of 97.13 ~ 98.25%, tree height measurement precision range of 97.88 ~ 98.91%, volume measurement accuracy range is 95.14% ~ 96.73%3. Study on plots measurement principle and methodResearch based on the multi-function MINI tree Super station plots measuring function of the instrument, put forward a kind of micro polygon method of plots survey observation technology, as a case study of five tree forest plots investigation. Observed for 100 pieces of plots data, the selection of 72 pieces of representative plots to use according to the data as an experiment, with each wood gauging value as a theory of truth. Were observed for 100 pieces of plots data, the selection of 72 pieces of representative plots to use according to the data as an experiment, with each wood gauging value as a theory of truth. Experimental results show that the average high average relative error 2.32%, average relative error absolute value 5.75%; By average diameter at breast height average relative error 3.02%- 3.02%, the average relative error absolute value; Stand number density measurement of average relative error of 0.53%-0.53%, the average relative error absolute value; Forest stand volume measurement of average relative error is 4.02%, the average value of absolute value of relative error 6.25%. Its measuring accuracy satisfy the rules and regulations of fixed plots survey technical standards of national forest. But has not yet been demonstrated with several side is optimal. Forest investigation can try this method, and can be widely still needs further validation.The development of multifunctional MINI tree super station measurement, and successfully applied in forest resource survey and monitoring the operation efficiency and quality are improved significantly. The field work time and work intensity is significantly reduced, the degree of automation and informatization level in the industry get improved, meanwhile the accuracy of forest resource survey and monitoring is significant to improve. Informationization forest measuring technology and method, is gradually replacing the traditional technology and methods, in the forest resource survey and monitoring has been widely used and effective technical support for the implementation of precision forestry in China.