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Method for improving forest productivity based on crown complementarity

A complementary and productive technology, applied in afforestation, forestry, instruments, etc., can solve problems that have not been raised, and achieve the effects of easy construction, improved forest productivity, and simple methods

Active Publication Date: 2021-02-05
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Canadian scholar Williams first proposed the concept of "canopy spatial complementarity", but still did not propose a technical method on how to use the canopy spatial complementarity between individuals of different species to improve forest productivity

Method used

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  • Method for improving forest productivity based on crown complementarity
  • Method for improving forest productivity based on crown complementarity
  • Method for improving forest productivity based on crown complementarity

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Embodiment 1

[0031] A kind of method that present embodiment provides improves forest productivity based on canopy complementarity, proceeds in the following steps:

[0032] (1) Taking the shrubs, secondary forests and primary forests at different soil nutrient and water gradient sites in the study area as objects, establish standard plots according to the statistical sampling method, investigate and enumerate the species composition of woody plants in each community, and count the species richness measure tree height, diameter at breast height and crown configuration parameters tree by tree;

[0033] (2) The canopy shape of the species is divided into two types: cone and ellipsoid, and the thickness, area and volume of the canopy, as well as the horizontal and vertical spatial coordinates of the canopy, are quantified according to the distribution points of each individual in the corresponding plot;

[0034] (3) According to the spatial coordinates of the tree crowns of each individual an...

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Abstract

The invention discloses a method for improving the forest productivity based on crown complementarity, which comprises the following steps of: selecting bushes, secondary forests and protoplasts withdifferent soil nutrient and moisture gradients, and quantifying the non-overlapping degree of the crown volume of a tree individual in the vertical direction through standard sample plot investigationto obtain a community horizontal crown complementarity index; reflecting community productivity by using the total amount of forest stand annual litters, establishing a regression relationship between the community productivity and crown complementary indexes, screening community types with high species richness, strong crown complementarity and high productivity, and sorting the crown complementarity indexes according to tree species individuals; selecting an individual pair greater than the average value of the community as a species pairing combination with high crown complementarity; meanwhile, according to the community multi-degree proportion of the species combination of the type, determining the number proportion, integrating the planting method, and forming community afforestation schemes with different site high productivity. The forest productivity can be remarkably improved by accurately optimizing the forest stand space structure, and the method can be widely applied to afforestation, tending, forest stand transformation and large-diameter wood cultivation.

Description

technical field [0001] The invention belongs to the technical field of forest ecosystem environment design, and in particular relates to a method for improving forest productivity based on tree canopy complementarity. Background technique [0002] Forest productivity is one of the most important functions of ecosystems. Improving forest productivity is related to the construction of ecological environment and the sustainable development of social economy in our country. At present, my country's ecological construction still has a "total shortage" of forest resources, and the productivity of most forests is in the predicament of not being fully tapped. For a long time, my country's forest quality and efficiency improvement theory and technology research has remained at the rough level. Although the stand canopy density and the number of retained trees are used to measure the stand quality in the design of afforestation and silvicultural management, due to the lack of attenti...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/02A01G17/00A01G23/00
CPCG06Q10/04G06Q50/02A01G23/00A01G17/005Y02P60/40Y02A40/22
Inventor 阎恩荣郑丽婷胡志忠杨同辉王良衍
Owner EAST CHINA NORMAL UNIVERSITY
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