天山云杉天然更新幼苗性状与微生境因子的关系  

Relationship between microhabitat factors and natural regeneration seedling traits of Picea schrenkiana var. tianschanica

作　　者：童海麦 潘存德[1] 赵善超 胡文聪 田晨阳 宋梦真 TONG Haimai;PAN Cunde;ZHAO Shanchao;HU Wencong;TIAN Chenyang;SONG Mengzhen(College of Forestry and Landscape Architecture,Xinjiang Agricultural University,Urumqi,Xinjiang 830052,China;Xinjiang Forestry and Grassland Bureau,Urumqi,Xinjiang 830000,China)

机构地区：[1]新疆农业大学林学与风景园林学院,新疆乌鲁木齐830052 [2]新疆林业和草原局,新疆乌鲁木齐830000

出　　处：《森林与环境学报》2023年第2期160-168,共9页Journal of Forest and Environment

基　　金：中央财政林业改革发展资金任务“天山北坡中部天山云杉更新幼苗监测”(新林规字[2022]9号)。

摘　　要：为加深认识天山微生境在植物幼苗定植过程中的作用,以天山北坡中部天山云杉(Picea schrenkiana var.tianschanica)1年生天然更新幼苗为研究对象,基于对幼苗性状和微生境因子的调查,通过对幼苗性状和微生境因子相关性的排序分析,解析幼苗性状与微生境因子之间的关系,探讨微生境因子对幼苗性状的影响。结果表明:显著影响天山云杉1年生天然更新幼苗性状的微生境因子有枯落物层厚度、土壤紧实度、草本层高度、草本层盖度、苔藓层盖度、枯落物层盖度、海拔、根系盘结层厚度、土壤容重、土壤全磷和土壤含水量,这11个微生境因子可解释天山云杉1年生天然更新幼苗56.01%的性状变异,其中枯落物层厚度、苔藓层盖度、土壤紧实度和土壤容重占总解释率的55.13%。在天山云杉天然更新的定植过程中,微生境因子中地被物类型及土壤的疏松程度对1年生幼苗性状有较强的影响。To deepen our understanding of the role of the microhabitat in seedling colonization, we analyzed the relationship between microhabitat factors and the natural renewal seedling traits of 1-year-old Tianshan spruce(Picea schrenkiana var. tianschanica) seedlings in the central northern slope of the Tianshan Mountains. In addition, we explored the influence of microhabitat factors on seedling traits via ranking analysis. Our results identified 11 microhabitat factors, namely, litter thickness, soil compaction, herb height, herb cover, moss cover, litter cover, altitude, root disc layer thickness, soil weight, soil phosphorus, and soil volume, that significantly affected the seedling traits of natural-regenerated 1-year-old Tianshan spruce seedlings. These factors explained 56.01% of seedling variation, with litter thickness, moss cover, soil compaction, and soil weight accounting for 55.13%. During the natural renewal colonization of Tianshan spruce, the type of ground cover and degree of soil loosening had a strong impact on the traits of 1-year-old seedlings.

关 键 词：天山云杉 天然更新 幼苗性状 微生境 冗余分析 

分 类 号：S754.1[农业科学—森林经理学]