Robinia pseudoacacia forest density control chart compilation method based on water and soil conservation comprehensive function

A technology of density control and function, applied in the field of stand density control chart compilation

Pending Publication Date: 2022-05-13
BEIJING FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, the stand density control map oriented to soil and water conservation functions is still in a blank state in related research and application

Method used

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  • Robinia pseudoacacia forest density control chart compilation method based on water and soil conservation comprehensive function
  • Robinia pseudoacacia forest density control chart compilation method based on water and soil conservation comprehensive function
  • Robinia pseudoacacia forest density control chart compilation method based on water and soil conservation comprehensive function

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Experimental program
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Effect test

Embodiment 1

[0041] 1. Growth law of Robinia pseudoacacia in the Loess Plateau

[0042] From the analysis of the trunks of the standard trees of Robinia locust forests with different stand densities, it can be seen that the average diameter at breast height and the peak annual growth of tree heights of Robinia locust stands at different stand densities occur at slightly different stand ages, but basically all occur at young ages (0-10 years); when the annual growth amount intersects with the average growth amount, the annual growth amount is always smaller than the average growth amount, and gradually decreases. From the stand age when the average volume growth of Robinia pseudoacacia is equal to the annual growth, it can be known that the maturity period of Robinia pseudoacacia is 21 years. The mean DBH, tree height and volume growth of Robinia pseudoacacia decreased with the increase of stand density. When at high stand density (2500 trees / hm 2 ) under the condition of tree height, the...

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Abstract

The invention discloses a robinia pseudoacacia forest density control chart compilation method based on a water and soil conservation comprehensive function, and the method comprises the steps: employing a trunk analysis method to analyze the growth process and growth rule of robinia pseudoacacia trees of different ages and different densities in a loess plateau; analyzing a water conservation function, a soil conservation function and a water storage and sand reduction function of the robinia pseudoacacia forest through a method of combining a field experiment and an indoor experiment, and calculating a comprehensive water and soil conservation function index; performing relation coupling on the growth of the robinia pseudoacacia forest and the water and soil conservation comprehensive function, and constructing a robinia pseudoacacia forest density control chart based on the water and soil conservation comprehensive function. A water and soil conservation function is used as a guide, a traditional stand density control chart compilation method is combined, a water and soil conservation function guide type stand density control chart is constructed, the functions of the robinia pseudoacacia forest can be estimated, and technical support is provided for operation management, directional regulation and control, resource checking and the like of the stand; and the method has important practical guiding significance on accurate improvement of the loess plateau forest stand quality.

Description

technical field [0001] The invention relates to a method for compiling a stand density control chart, in particular to a method for compiling a black locust forest density control chart based on comprehensive functions of water and soil conservation. Background technique [0002] Stand density refers to the degree of utilization of the space occupied by trees. Too small stand density not only affects the production of timber, but also is not conducive to the stability of the forest ecosystem and the protection of slopes; while the stand density is too high, it will intensify the competition among trees, inhibit the growth of trees, and then limit their soil and water conservation. Functional play. Therefore, only by maximizing and rationally utilizing the space occupied by trees can the forest stand fully exert its maximum function and benefit. Stand Density Control Map (SDMD) is based on the law of density effect, fits the mathematical model of the relationship between th...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06Q50/26
CPCG06F30/20G06Q10/06393G06Q50/26
Inventor 毕华兴崔艳红王宁赵丹阳王珊珊马晓至侯贵荣刘淑琴云慧雅刘泽晖兰道云张荣黄靖涵
Owner BEIJING FORESTRY UNIVERSITY
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