Ecological restoration method for pine wood nematode damaged pine forest

Abstract

The invention discloses an ecological restoration method for pine wood nematode damaged pine forest. According to the technical route, the masson pine forest is divided into four degeneration types according to habitat conditions, community structures, evolutionary changes and damage conditions. For a scattered pine-deciduous shrub type, sunny shrubs and bamboos and weeds are cleaned, local broad-leaf target tree species seedlings are reserved and cultivated, soil preparation, afforestation and tending are carried out, and target tree species such as schima superba and sweetgum are promoted to update and build new groups. For a scattered pine-evergreen shrub type, sanitation cutting, thinning and cleaning, complementary planting and tending are carried out to promote the regeneration succession of communities. For a pine-sweetgum forest type, the vigor and stability of the forest are improved through sanitation cutting, thinning, complementary planting and cultivation of prepared target trees. For a pine-schima superba forest type, through tending and thinning, complementary planting and cultivation of prepared target trees, a different-age mixed forest with broad-leaf target tree species as the main species is rapidly built. The technical measures are high in pertinence, rapid in recovery, low in investment, easy to operate and suitable for being widely applied to the Eastern Zhejiang region in China.

Description

technical field [0001] The invention belongs to the field of environmental protection of mountain forests, and in particular relates to an ecological recovery method for pine forests damaged by pine wood nematodes. Background technique [0002] Masson pine is the main fine native tree species in southern my country. Wide distribution, fast growth, strong adaptability. Due to the harm of pine wood nematode, a large area of ​​pine forests withered and died. At present, the coastal pine forest epidemic areas in my country often adopt the management model of long-term closure of the mountain for forest cultivation after clearing the pine diseased trees. In the process of clearing the diseased trees and stand tending, only the cleaning and transportation of the pine diseased trees are paid attention to, and the saplings of the zonal native broad-leaved tree species are ignored. After management, the stand density is low, the target tree species is not clear, the stand structure ...

AI Technical Summary

Problems solved by technology

b class="d_n">[0006] The object of the present invention is to provide a method for the ecological restoration of the degraded pine forest of pine wood nematode damage, the method according to the community structure characteristics, succession rules and woodland environmental conditions of the degraded pine forest, Divide masson pine forests into different types of degradation states, and adopt different restoration technical measures according to different types of degradation states, provide an applicable, economical, stable, and healthy ecological restoration technology for evergreen broad-leaved forests, and accelerate the zonality of degraded masson pine forests The rapid recovery process of evergreen broad-leaved forest has improved the stand structure, promoted the growth and regeneration of trees, and solved the poor forest recovery effect caused by the long-term "enclosed" method of traditional degraded pine forests, and the lack of specific restoration measures for degraded types Waiting for the bottleneck problem

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