川西北高寒沙地不同栽植年限康定柳根系特征  

Root Characteristics of Salix paraplesia Planted at Different Ages in High-Altitude Sandy Areas of Northwestern Sichuan

作　　者：刘玉平 班英 邓东周[1,3] 鄢武先 黄雪梅[1,3] 贺丽 陈德朝 Liu Yuping;Ban Ying;Deng Dongzhou;Yan Wuxian;Huang Xuemei;He Li;Chen Dechao(Sichuan Academy of Forestry,Chengdu 610081,Sichuan,China;Administration Bureau of Ruoergai Wetland National Nature Reserve,Ruoergai 624500,Sichuan,China;Sichuan Provincial Forestry and Grassland Key Laboratory of Combating Desertilicatlon,Chengdu 610081,Sichuan,China)

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]四川若尔盖湿地国家级自然保护区管理局,四川若尔盖624500 [3]荒漠化防治四川林业草原重点实验室,四川成都610081

出　　处：《绿色科技》2025年第4期7-11,共5页Journal of Green Science and Technology

基　　金：四川省基本科研项目(编号:2020JBKY18)。

摘　　要：为摸清康定柳根系生长特征,本研究以川西北高寒沙地上栽植不同年限的康定柳灌木为研究对象,采用样方挖掘法获取康定柳根系生物量,分析了其根系形态、分布情况和生物量特征,也为康定柳对地下资源的利用情况提供理论依据。研究表明:随着康定柳栽植年限的增加,根系的根尖数、分枝条数和体积均表现较大幅度的增长,并且5年生相对于1年生和3年生而言,增长趋势更快。随着康定柳栽植年限的增加,其根系、根冠比也在不断生长,且呈现较明显的加速趋势。同时,也发现根系的生长比地上部分生长更快。To understand the growth characteristics of the root system of Salix paraplesia,the study focused on planting Salix paraplesia shrubs of varying ages on the cold and arid sandy lands in northwestern Sichuan.Using plot excavation methods,the research obtained data on the root biomass of Salix paraplesia,analyzing its root morphology,distribution,and biomass characteristics.This study aims to provide theoretical support for understanding how Salix paraplesia utilizes underground resources.The results indicate that with increasing planting age,the number of root tips,branch numbers,and volume of the roots of Salix paraplesia show significant growth.Particularly,the growth trend is faster in the 5-year age group compared to the 1-year and 3-year age groups.Furthermore,with increasing planting age,both the root system and the fresh weight of the root crown of Salix paraplesia continue to grow,showing a noticeable acceleration trend.Additionally,it was observed that the root system grows faster than the aboveground parts.

关 键 词：川西北 高寒沙地 康定柳 生物量分配 根冠比 主根 须根 

分 类 号：S718[农业科学—林学]