Method for reforming closed pure pinus massoniana forest into mixed forest

A technology for masson pine and mixed forest, applied in forestry, afforestation, climate change adaptation, etc., can solve the problems of suppressing the growth of masson pine, failing to achieve the effect and function of plantation, and increasing costs.

Inactive Publication Date: 2017-02-01
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the mixed crossing, the traditional inter-plant mixed crossing, inter-row mixed crossing, strip mixed crossing, and block mixed crossing modes are used. These modes not only increase the cost during planting, but also do not fully consider the biological characteristics of the species during the mixed crossing. Whether the collocation is reasonable, and the mixed growth of broad-leaved trees suppresses the growth of Pinus massoniana caused by the same age, which leads to the failure of mixed forest construction, and the complementary effect of mixed tree species cannot be fully exerted
At the same time, the traditional model of construction also fails to take into account the random relationship of different species in the mixed model, and cannot achieve the effect and function of plantations close to nature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Implementation site: 3 forestry shifts in Wuguan Branch of Longlin Farm, Hengxian Town, Nanning City, Guangxi, with an area of ​​113 mu, the original forestation density of 134 trees / mu, and the spacing between trees and rows of 2m×2.5m.

[0032] According to the growth characteristics of tree species, Red Cone, Gemu, and Lotus are selected as mixed tree species, and each mixed tree species is an annual seedling.

[0033] According to the thinning intensity of the masson pine pure forest young forest after canopy closure, the pure forest density is thinned to 80-100 trees / mu. Dig a 40cm x 30cm x 40cm open sill at the position where the masson pine is thinned, put 0.5kg of calcium magnesium phosphate fertilizer, and return to the soil. In the rainy season, according to 100:34, 95:39, 90:44 and 93:47, the mixing ratio of broad-leaved trees was 25.4%, 29.1%, 32.8% and 35.1%, respectively. Take the skylight in the gap in the forest as the replanting unit, and replant in cl...

Embodiment 2

[0035] The place of implementation is a 9-year-old masson pine pure forest in Longlin Farm, Hengxian Town, Nanning City, Guangxi.

[0036] According to the growth characteristics of tree species, Quercus japonica, Red Cone, and Huolinan were selected as mixed tree species, and each mixed tree species was an annual seedling.

[0037] According to the preservation rate after the first thinning of the masson pine pure forest, thinning is carried out again, and the density of the pure forest is thinned to 60-80 trees / mu. Dig a 40cm x 40cm x 30cm open sill at the position where the masson pine is thinned, put in 0.5kg of calcium magnesium phosphate fertilizer, and return to the soil. In the rainy season, according to the masson pine: broad-leaved tree mixed ratio of 60-80:60-50, the broad-leaved trees are planted in a random arrangement with the skylight in the forest gap as the replanting unit.

Embodiment 3

[0039] The implementation site is the 14-30 forest class of Huashan Forest Farm, Huanjiang County, Guangxi, a 10-year-old masson pine pure forest with an area of ​​105 mu.

[0040] Choose sweetgum, oak oak, red cone, lotus, etc. as mixed tree species.

[0041] According to the preservation rate after the first thinning of the masson pine pure forest, thinning is carried out again, and the density of the pure forest is thinned to 60-80 trees / mu. Dig a 40cm x 40cm x 30cm open sill at the position where the masson pine is thinned, put in 0.5kg of calcium magnesium phosphate fertilizer, and return to the soil. In the rainy season, according to the masson pine: broad-leaved tree mixed ratio of 60-80:30-50, the broad-leaved trees are planted in a random arrangement with the skylight in the forest gap as the replanting unit.

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PUM

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Abstract

The invention discloses a method for reforming a closed pure pinus massoniana forest into a mixed forest. The method comprises the following steps: selecting proper mixing tree species from the closed pure pinus massoniana forest according to retention density after intermediate cutting and biological characteristics of the mixing tree species, and planting 1-5 mixing tree species randomly according to a certain ratio. The method aims to form a long-term pinus massoniana artificial mixed near-natural forest with both ecological and economic functions, and on the basis of the time that a young pinus massoniana forest, a middle-aged pinus massoniana forest and a near-mature pinus massoniana forest are subjected to intermediate cutting for multiple times, and the sufficient consideration of the biological characteristics of the mixing tree species, proper mixing tree species with economic values can be reasonably selected. Practical applications show that the method is suitable for reforming the pure pinus massoniana forest into the mixed forest after closing under conditions of different tree ages and environments, the efficiency in artificially constructing the mixed forest can be remarkably improved, the mixed forest construction time can be shortened, the planting cost of mixed forest construction can be reduced, and due to multiple tree species and long and short-term planting, the economic benefits and the ecological benefits of the mixed forest can be sufficiently brought into play.

Description

technical field [0001] The invention belongs to the field of tree cultivation, and in particular relates to a method for converting a pure masson pine forest into a mixed forest after canopy closure. Background technique [0002] Masson pine is the most important fast-growing and high-yielding timber forest species in southern China, and has made great contributions to the area of ​​fast-growing forests, standing stock and timber production in southern my country. According to statistics, 16.9% of the forest stock volume in southern my country comes from Masson pine. my country is a producer of gum rosin, and 50% of the output comes from Guangxi, which reflects the high economic value of Masson pine. [0003] In our country, the damage to the natural forest of Pinus massoniana is serious, and it is replaced by the pure forest of Pinus massoniana plantation. However, due to the single species of large-scale pure forest, the probability of pests and diseases and fires is grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G23/00
CPCA01G23/00Y02A40/22Y02P60/40
Inventor 杨章旗颜培栋吴东山唐生森陈虎
Owner GUANGXI FORESTRY RES INST
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