Ecological restoration method for low-efficiency wind break forest of coastal hill ridge of East Zhejiang province

Abstract

The invention discloses ecological restoration methods for difficult-standing low-efficiency wind break forests and particularly relates to an ecological restoration method for a low-efficiency wind break forest of a coastal hill ridge of East Zhejiang province. According to the method, by using the characteristic that overgrown evergreen broad-leaved tree species is dense in tree crown, the overgrown evergreen broad-leaved tree species provides shading and wind shelter for undergrown young trees, and thus, an uneven-aged multi-layer crossed colony with complete structure and efficient windproof function, which takes an objective function species as a main body ingredient, is rapidly built; and through the measures of thinning, objective function wood replanting, tending of woods, later-stage management and the like, the regional windproof objective function species can rapidly settle and grow, so that the stand structure, species configuration and site conditions are improved, a positive succession process of stands is promoted, and ecosystem service functions such as wind proofing are remarkably improved. Compared with the existing traditional technologies, the method has the advantages of easiness in building, small investment, high restoration speed, high colony structure layer, high biomass accumulation speed and superior wind breaking performance and has a broad application prospect in the ecological restoration of the difficult-standing low-efficiency wind break forests of coastal hills of the East Zhejiang province.

Description

technical field [0001] The invention relates to an ecological restoration method of low-efficiency windbreak forests on difficult sites, in particular to an ecological restoration method of low-efficiency windbreak forests on hilly ridges along the coast of eastern Zhejiang. Background technique [0002] Due to the special terrain, geology and landform conditions, as well as the long-term impact of typhoons, most of the ridges in the hills and mountains along the southeast coast of my country are exposed to rocks, barren soil, heavy wind and fog, and the conditions for afforestation are very harsh. In these difficult sites for afforestation, the main windbreak forests in the coastal zone show symptoms such as poor growth of trees, gaps and broken belts in the forest belt, and weak windbreak ability. At the same time, due to the harsh habitat conditions, the shelterbelts built in the past have single species, simple structure, small growth, serious pests and diseases, and bar...

AI Technical Summary

Problems solved by technology

The types of difficult sites in "Discussion on Greening and Afforestation Technology on Difficult Coastal Sites" and "Introduction Technology for Greening Tree Species on Difficult Coastal Sites" are all coastal islands, saline-alkali lands, tidal flats, etc. in typhoon-prone areas along the southeast coast of Zhejiang, and do not involve coastal hills and ridges; at the same time, The two comparative studies did not analyze and optimize the community structure of the windbreak forests constructed; in addition, the excellent wind-resistant tree species proposed by the two comparative studies are not native species of zonal evergreen broad-leaved forests, but mostly exotic species such as casuarina, giant Eucalyptus, meranti, black pine, etc., or fruit trees such as Yuhuan pomelo, citrus, and loquat

In more than 40 years of local coastal protection forest practice in Ningbo, a large number of black pine and eucalyptus have also been introduced, but they do not grow well in the difficult site on the coastal ridge, the protection effect is weak, and the forest preservation rate is low