Research On Plantation Density Management Diagram And Economic Benefit Simulation Technology

Planted forests have important impacts on wood production,purification of the environment,and climate regulation.my country's plantation area is large,but there are problems such as unreasonable structure and low quality.Therefore,how to manage and manage the plantation scientifically and reasonably and realize the sustainable development of the plantation is very important.This article takes the Chinese fir plantation forest in Fujian Province as the research object,builds forest growth and harvesting models and forest density control models based on the forest resource inventory data and standard survey data;studies the economic benefit prediction algorithm of the plantation,through net cash Value algorithm,forest land expectation value algorithm and internal rate of return algorithm,etc.to calculate the economic benefits of plantation;using stand growth and harvest curve technology and density management diagram dynamic drawing technology,to develop artificial forest density management diagram and economic benefit simulation system to assist forest agronomy Reasonable decision support.1.Based on the collected forest plot data and standard survey data,use R statistical analysis software to select and fit growth and harvest models such as breast diameter,tree height and stock volume models,as well as contour tree height models and isodensity Forest model density control models such as line model,isometric model,natural sparse line and crown width closed line,and perform error testing and residual analysis to provide models for plantation density management diagram and economic benefit simulation systems.2.Study the economic benefit algorithms such as the net present value algorithm,the forest land expected value algorithm,the internal rate of return algorithm,and the forest land expected value algorithm considering carbon sequestration of Chinese fir plantation,and complete the economic benefits in the economic benefit harvest forecast table under different site conditions according to these algorithms Calculate the evaluation index,and then obtain the optimal rotation period of each economic benefit evaluation index under different site conditions to assist forest farmers to obtain the maximum stand benefits.3.Use the stand growth and harvest curve technology to display the growth and harvest model in the form of a growth and harvest curve,which can help forest farmers to estimate the growth and harvest of the stand and master the growth rules of the trees;use the density management diagram dynamic drawing technology to control the density control model Shown in the form of density management diagram,it can be applied to tending thinning,assisting the decision-making personnel of plantation cultivation and operation to scientifically and rationally formulate tending plans.4.Demand design,system architecture design and database design of the plantation density management diagram and economic benefit simulation system,analysis and design of each functional module of the system,and use visual chart technology to simulate stand growth and harvest simulation,density management diagram and The economic benefit chart forecast is displayed in the form of a twodimensional chart in the system to assist forestry operators in making business decisions.