济南城区麦冬(Ophiopogon japonicus)对融雪剂的耐受响应评价

Response analysis of Ophiopogon japonicus to snowmelting agent in Jinan urban area

摘要

麦冬对融雪剂伤害的响应规律研究可为其合理栽植使用提供科学依据和技术支撑。文章采用分层抽样的方法,实地调查济南城区具有代表性的麦冬绿地,采用聚类分析与主成分分析方法综合评价济南城区麦冬对融雪剂伤害的响应规律。结果表明:麦冬受伤害程度呈现空间衰减特征,城市主干道周边麦冬平均受害指数显著高于封闭区域,麦冬受害程度随距路缘距离增加而呈现梯度递减;土壤电导率(electrical conductivity,EC)是表征融雪剂伤害的关键指标,与麦冬受害程度呈正相关,影响范围主要集中在路缘1 m范围内。建议将EC(0.322±0.070)mS/cm确立为麦冬耐受阈值,从而为园林养护中的融雪剂施用提供量化依据。

Abstract

Investigating the response patterns of Ophiopogon japonicus to deicing agent damage provides a scientific basis and technical support for its rational planting and management. Using a stratified sampling approach, field surveys were conducted in representative Ophiopogon japonicus greenspaces in urban Jinan, and cluster analysis combined with principal component analysis was applied to comprehensively evaluate its response to deicing agents. The results indicate that the damage to Ophiopogon japonicus exhibits a clear spatial attenuation pattern, with the mean damage index near major urban roads significantly higher than that in enclosed areas, and decreasing progressively with increasing distance from the road edge. Soil electrical conductivity (EC) is identified as a key indicator of deicing agent impact, showing a significant positive correlation with the degree of plant damage, and the primary influence range is within 1 m of the road edge. An EC threshold of (0.322±0.070) mS/cm is recommended as the tolerance limit for Ophiopogon japonicus, thereby providing a quantitative reference for the application of deicing agents in urban landscape maintenance.

关键词

麦冬 / 融雪剂 / 伤害指数 / 响应规律

Key words

Ophiopogon japonicus / snowmelting agent / injury index / response pattern

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基金资助

山东省农业科技资金(林业科技创新)项目(2019LY005)

山东省农业科技资金(林业科技创新)项目(2019LY009)