横山区退化林草修复模式探析

Degraded Forest and Grassland Restoration Patterns in Hengshan District

横山区现有乔灌草植被退化现状出发,探查了杨(柳)树、樟子松(油松、侧柏)及灌丛等主要林草树(草)种的退化特征,分析了林草植被退化主要表现形式,研判了导致退化的干旱少雨、生理过熟、经济管理不善等主客观因子:有针对性地提供了更新重造、择伐补造、林冠下更新、提质增效、抚育改造、平茬复壮、围栏封育、林地管理、草原改良等退化林草修复技术,就现有针叶树、阔叶树、灌丛等植被提质增效探究了11种混交配置模式。

Starting from the current situation of degraded vegetation in Hengshan District,this paper explores the degradation characteristics of major forest and grass species such as poplar(willow),Mongolian pine(Chinese pine,arborvitae),and shrubs.It analyzes the main forms of forest and grass vegetation degradation and identifies the subjective and objective factors causing the degradation,such as drought,lack of rain,physiological overripeness,and poor economic management.Targeted restoration technologies for degraded forests and grasslands are proposed,including renewal and reconstruction,selective cutting and replenishment,regeneration under the canopy,quality improvement and efficiency enhancement,tending and transformation,crop restoration,fencing,forest management,and grassland improvement.Eleven mixed planting patterns are explored for enhancing the quality and efficiency of existing coniferous trees,broadleaf trees,and shrubs.