辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(5)：546-553,8.DOI:10.11956/j.issn.1008-0562.20250048
沙地樟子松人工林土壤钾素含量研究
The variation of soil potassium content and its influencing factors in plantation of Pinus sylvestris var.mongolica in sandy land
摘要
Abstract
To investigate the effects of vegetation recovery on soil potassium content and availability in sandy land,a combination of field sampling and laboratory analysis was used to study the distribution characteristics of total potassium(TK)and available potassium(AK)in different soil layers of Pinus sylvestris var.mongolica plantations in Zhanggutai,as well as their relationships with stand and soil factors.The results showed that soil TK in Pinus sylvestris var.mongolica plantations increased slightly with stand age but was not statistically significant,while TK in low-density stands significantly decreased.No significant differences in AK content were observed among stands of different ages and densities,but AK exhibited a pronounced aggregation pattern in the 0-10 cm surface layer.Stand factors,except for crown width,had no significant influence on AK variations.The 0-20 cm,20-40 cm,and 80-100 cm soil layers were positively affected by soil water content,available phosphorus,and total nitrogen,respectively.The results provide a scientific basis for soil fertility management of Pinus sylvestris var.mongolica plantation in sandy land.关键词
土壤钾素/樟子松人工林/林分因子/土壤理化性质/沙地Key words
soil potassium/Pinus sylvestris var.mongolica plantation/stand factor/soil physicochemical properties/sandy land分类
农业科技引用本文复制引用
雷泽勇,刘畅,王国晨,赵国军,韩艳刚,王赛男,周凤艳..沙地樟子松人工林土壤钾素含量研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(5):546-553,8.基金项目
国家重点研发计划项目(2022YFF1302505-02) （2022YFF1302505-02）
辽宁省教育厅基本科研项目面上项目(JYTMS20230808) （JYTMS20230808）
