生态学杂志2025，Vol.44Issue(1)：49-55,7.DOI:10.13292/j.1000-4890.202501.019
新疆野核桃冻害与龄级和坡向的关系
Relationship between freezing damage and age class and slope aspect of Juglans regia in Xinjiang,China
摘要
Abstract
Severe freezing damage leads to stunted growth of walnut,reduced yield and even plant death.In this study,we investigated the freezing damage on Juglans regia in the Xinjiang Wild Walnut Nature Reserve,and ana-lyzed the distribution characteristics of freezing damage levels of J.regia and the response of freezing damage to age class of trees and slope aspect.The results showed that:(1)The freezing damage on J.regia reached 87.1％.The proportion of damage at level 1,2,3,and 4 was 22.5％,43.4％,17.5％,and 3.7％,respectively,with the severe and very severe freezing damage together being 21.2％.(2)The proportion of freezing damaged J.regia varied in different slope aspects,with the highest proportion on semi-shaded slopes(26.6％),followed by semi-sunny slopes(23.7％)and shaded slopes(21.2％),and the lowest in the sunny slopes(15.6％).Resistance abilities varied among different age classes of J.regia,with the highest proportion of frozen damage in seedlings(43.4％),fol-lowed by middle-aged trees(36.5％),elderly trees(19.1％),and the lowest in young trees(1.0％).There were significant differences in the proportion of freezing damage of J.regia in the same age class from different slope aspects(P＜0.05).(3)Mild and moderate freezing damage mainly occurred on the semi-sunny slopes,while se-vere and very severe freezing damage mainly occurred on the semi-shaded slopes.Level 1 and level 4 freezing dam-age mainly occurred on seedlings,while level 2 and level 3 freezing damage mainly occurred on middle-aged trees.(4)Freezing damage was significantly correlated with diameter at the breast height and slope aspect of J.regia(P＜0.05),and significantly negatively correlated with crown width(P＜0.01).Nearly 90％of J.regia in the reserve suffered from freezing damage.The proportion of freezing damage level of J.regia varied greatly in different slope aspects and age classes.Our results provided scientific reference for the prevention of freezing damage on J.regia.关键词
新疆野核桃/冻害/胸径/坡向Key words
Juglans regia/freezing damage/diameter at breast height/slope aspect引用本文复制引用
柳华清,王博,贾妍妍,巴雪瑞,张维..新疆野核桃冻害与龄级和坡向的关系[J].生态学杂志,2025,44(1):49-55,7.基金项目
国家自然科学基金项目(31560095,31160072)、伊犁师范大学学科提升专项项目(22XKZZ02)和伊犁师范大学研究生科研创新项目(YS2023G008)资助. （31560095,31160072）
