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Eucalyptus urophydis quality-improving efficiency-increasing intermediate felling method

A technology of improving quality and efficiency, Eucalyptus grandis, applied in the field of forest cultivation, can solve problems such as lack of research reports, and achieve the effects of improving ecosystems, facilitating sustainable management, and enriching vegetation diversity

Active Publication Date: 2020-06-12
RES INST OF TROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing literature, there are reports on tending and thinning of Eucalyptus grandis plantations in southern Fujian, but there are no research reports on non-typhoon areas or areas with few typhoons such as southern Yunnan and central Guangdong and Guangxi.

Method used

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  • Eucalyptus urophydis quality-improving efficiency-increasing intermediate felling method
  • Eucalyptus urophydis quality-improving efficiency-increasing intermediate felling method
  • Eucalyptus urophydis quality-improving efficiency-increasing intermediate felling method

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Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0045] (1) Baseline age determination:

[0046] Based on the survey data of 350 standard plots of dominant trees aged 1 to 14 years, the dominant tree height (H) and stand age (t) were substituted into Richard’s equation H=a×[1-exp(-b×t) ] k (H is the dominant tree height of the stand, t is the age of the stand, and a, b, and k are parameters); when a, b, and k are respectively assigned values ​​of 36.65, 0.104, and 0.625, the second-order derivative of the equation is equal to zero, and the obtained t=-In(1 / b) / k equation, and then b=0.104 and k=0.625 were substituted into, and t=4.5 years was obtained, and the base age of Eucalyptus macrocephalus was obtained.

[0047] (2) Select Eucalyptus grandis (DH32 series clones) planted in Pu'er City, Yunnan Province, which is a typhoon-free area, and divide them into Batangqing (BTQ1, BTQ2), Chachang (CC), Mamuhe (MMH), Xishahekou (XSHK) ), Yongping (YP) plots.

[0048] The characteristics of this type of planting land are: when th...

Embodiment 7～10

[0069] (1) Baseline age determination:

[0070] Based on the survey data of 350 standard plots of dominant trees aged 1 to 14 years, the dominant tree height (H) and stand age (t) were substituted into Richard’s equation H=a×[1-exp(-b×t) ] k (H is the dominant tree height of the stand, t is the age of the stand, and a, b, and k are parameters); when a, b, and k are respectively assigned values ​​of 36.65, 0.104, and 0.625, the second-order derivative of the equation is equal to zero, and the obtained t=-In(1 / b) / k equation, and then b=0.104, k=0.625 are substituted into, and t=4.5 years are obtained, and the base age of Eucalyptus macrophylla is obtained. Therefore, the age of Eucalyptus macrocephalus for thinning is 4~ 5 years.

[0071] (2) Eucalyptus grandis (DH32 series clone) was planted in Pu'er City, Yunnan Province in a non-typhoon area, and divided into Batangqing (BTQ3), Lubaodi (LBD), Mianzhupeng (MZP1, MZP2), Yakouzhai ( YKZ) plot.

[0072] The characteristics of...

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Abstract

The invention discloses an eucalyptus urophydis quality-improving efficiency-increasing intermediate felling method. Intermediate felling is carried out on eucalyptus urophydis of 4-5 years, and suitable intermediate felling intensity, intermediate felling method and fertilization measures are taken for different cultivated fields, that is, an intermediate felling method of cutting one and reserving one or cutting three and reserving three; and combined with a fertilizer for eucalyptus urophydis, the growth of the diameter at breast height of eucalyptus urophydis forest trees in non-typhoon orless typhoon areas can be increased, the wood accumulation quantity per unit area of eucalyptus forests is increased, and the diversity of understory vegetation is enriched. Scientific basis and reference are provided for the tending intermediate felling and management of eucalyptus urophydis in non-typhoon areas.

Description

technical field [0001] The invention relates to the field of forest cultivation, in particular to a method for quality improvement and efficiency thinning of Eucalyptus grandis. Background technique [0002] In recent years, my country's eucalyptus plantations have provided important resources and guarantees for the production of domestic wood-based panels and pulp. Eucalyptus has high wood density, uniform fiber and high pulping rate (about 0.25kg / m2). 3 ), has become an important raw material for the forest pulp paper and forest board industries. Among them, Eucalyptus grandis (E.urophylla×E.grandis) and other eucalyptus species have the characteristics of straight and complete stem shape, good natural pruning, and good wood machining performance. . Existing studies have shown that the management mode of composite rotation of pulpwood plantation and large-diameter rotary-cut board plantation can make full use of the productivity of forest land and promote the growth pot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G23/08
CPCA01G17/005A01G23/08
Inventor 徐建民罗亚春李光友陆海飞吴玉强张琰锋张云东柏俊刘继伟
Owner RES INST OF TROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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