西北林学院学报2026，Vol.41Issue(3)：69-76,88,9.DOI:10.3969/j.issn.1001-7461.2026.03.07
陕西榆林地区不同人工林下沙蒿种群特征
Artemisia desertorum Population Features in Different Plantations in Yulin,Shaanxi Province
摘要
Abstract
Artemisia desertorum,a native sand-fixing plant of the Mu Us Sandy Land,has become an in-creasing cause of pollen allergy in the Yulin region.This study investigates the potential of plantations to control the spread of allergenic A.desertorum populations.A field inventory was conducted in Mengjiawan and the Sandy Land Forest Park in Yuyang District,Yulin City,Shaanxi Province.60-year Salix psam-mophila plantations,3-year and 20-year Pinus sylvestris var.mongolica plantations,and native A.deserto-rum vegetation were selected to assess the population characteristics of A.desertorum,and to evaluate the effects of plantations on its density,coverage,and individual crown.The results revealed that:(1)S.psam-mophila plantations significantly suppressed A.desertorum,reducing population density and coverage by 59.6%and 56.1%,respectively,compared to native vegetation.(2)The suppressive effect of P.sylvestris plantations varied with stand age.In 3-year stands with low canopy closure(28.0%),the coverage of A.desertorum increased by 58.3%compared with that of the pure A.desertorum population.In contrast,in 2 0-year P.sylvestris stands with 50.1%canopy closure,the crown and coverage of A.desertorum de-creased by 47.8%and 53.6%,respectively.Both plantations can effectively suppress A.desertorum.We recommend maintaining the stability of S.psammophila plantations and implementing canopy closure-and density-based management for P.sylvestris plantations.These findings provide a scientific basis for regula-ting allergenic A.desertorum populations.关键词
沙蒿/人工林/种群密度/林分密度/郁闭度Key words
Artemisia desertorum/plantations/population density/stand density/canopy closure分类
农业科技引用本文复制引用
寻家睿,刘莉,乔一娜,郑纪勇,常小峰..陕西榆林地区不同人工林下沙蒿种群特征[J].西北林学院学报,2026,41(3):69-76,88,9.基金项目
国家自然科学基金"黄土高原半干旱区草地灌丛化形成机制"(42177451). （42177451）
