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Method for transforming artificial young forest of western Sichuan subalpine low-efficiency picea asperata

A Chuanxie and spruce technology, which is applied in the transformation of low-efficiency spruce young forests, can solve the problems of insufficient light, slow growth, and high tree mortality in artificial young forests, achieve broad application prospects, promote survival and growth, and improve forest stand The effect of quality and economic efficiency

Inactive Publication Date: 2013-02-20
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY +1
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Problems solved by technology

However, due to poor tending measures and the invasion of shrubs and broad-leaved pioneer tree species into the plantation young forest, the forest has dense shrubs, poor ventilation, and insufficient light, resulting in high mortality, slow growth, and difficult stand regeneration in the plantation young forest.

Method used

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  • Method for transforming artificial young forest of western Sichuan subalpine low-efficiency picea asperata

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Embodiment

[0017] The implementation site is located at Lichaopo, Danzamugou, Zagunao Town, Li County, Sichuan Province, at an altitude of 2560 m, with a slope facing east and a slope of about 30°.

[0018] (1) Thinning and thinning of low-efficiency spruce young forests in western Sichuan

[0019] Take comprehensive tending measures before site preparation; improve the species composition and light conditions of the stand through measures such as thinning, light-transmitting tending, and removal of shrubs and weeds; cut down the damaged trees, and when the number of damaged trees is large, keep them appropriately For lightly damaged trees, keep the stand canopy density at least above 0.4; remove bifurcated wood, bent wood, damaged wood, disease and insect pest wood, weakened wood, etc. before the annual rainy season; clear the 0.5 m range outside the spruce crown projection shrubs and weeds in the forest, but keep young spruce individuals and promising broad-leaved tree species, and rem...

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Abstract

The invention discloses a method for transforming the artificial young forest of western Sichuan subalpine low-efficiency picea asperata. On the cutover land of a western Sichuan subalpine forest region, a large area of artificial pure forest mainly comprising picea asperata is built, however, because nurturing measures are ineffective and shrub and broad-leaf pioneer tree species intrude into the artificial young forest, dense shrubs, poorer ventilation and insufficient illumination in the forest are caused to result in the conditions of high death rate, slow growth and difficult forest stand updating of trees of the artificial young forest. According to the invention, by adoption of the technical means of thinning, light-transmitting nurturing, pruning, removal of weeds and shrubs in the range being 0.5m beyond the crown projection of target tree species, after-culture of four-year-old seedlings of the picea asperata, nursery stock nurturing, forest stand management and the like, the forest stand structure, species composition and forest stand site conditions are improved, and the survival and growth of the trees are promoted obviously. The method disclosed by the invention has the advantage of improving the forest stand quality and economic benefits of the artificial young forest of the low-efficiency picea asperata and is likely to have a broad application prospect in the transformation of the western Sichuan subalpine low-efficiency artificial young forest.

Description

technical field [0001] The invention relates to a technology for transforming degraded forest stands, in particular to a method for transforming low-efficiency spruce young forests. Background technique [0002] On the felling land in the western alpine forest area of ​​Sichuan, spruce ( Picea asperata ) for artificial afforestation, creating a large area of ​​artificial pure forest. However, due to ineffective tending measures and the invasion of shrubs and broad-leaved pioneer species into the plantation young forest, the forest has dense shrubs, poor ventilation, and insufficient light, resulting in high mortality, slow growth, and difficult stand regeneration in the plantation young forest. Contents of the invention [0003] The purpose of the present invention is to provide a method for transforming low-efficiency juvenile spruce forests in low-efficiency young spruce forests in western Sichuan, transforming low-efficiency juvenile spruce forests into high-quality sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G23/00A01G23/04
Inventor 史作民缪宁汪明刘兴良杨昌旭冯秋红李茂萍
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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