森林工程2026，Vol.42Issue(5)：918-932,15.DOI:10.7525/j.issn.1006-8023.2026.05.004
沙地主要人工林类型对土壤化学与生物学特性的差异化影响
Differential Effects of Major Plantation Types on Soil Chemical and Biological Properties in Sandy Lands
摘要
Abstract
To assess the differential effects of major afforestation species on soil chemical and biological properties in windbreak and sand-fixation forests of the Horqin Sandy Land,this study examined 19-year-old plantations of Pinus syl-vestris var.mongolica,Pinus tabuliformis,and Populus xiaozhuanica in the Zhanggutai region.Soil chemical and bio-logical indicators were analyzed to determine interspecific variation and their correlations.The results revealed that in the 0-20 cm soil layer,the soil Mg2+concentration in P.xiaozhuanica was significantly higher than in P.sylvestris var.mongolica plantations by 43.88%.The Na+concentration was 4.40 times and 2.87 times that of P.sylvestris var.mon-golica and P.tabuliformis plantations,with significant differences(P<0.05).The C:P ratio was significantly higher than in P.sylvestris var.mongolica plantations by 23.39%.The β-glucosidase activity was significantly higher than in P.sylvestris var.mongolica and P.tabuliformis plantations by 78.17%and 89.02%.The N-acetylglucosaminidase activity was 2.16 times that of P.sylvestris var.mongolica plantations,with significant differences(P<0.05).The bacterial bio-mass was significantly higher than in P.sylvestris var.mongolica plantations by 42.30%,and the gram-negative bacte-rial biomass was significantly higher than that in P.sylvestris var.mongolica and P.tabuliformis plantations by 69.55%and 61.47%,respectively.In the same layer,the soil cellulase hydrolysis activity and peroxidase activity in P.sylvestris var.mongolica plantations were 2.00 times and 1.58 times that of Populus xiaozhuanica plantations,with significant dif-ferences(P<0.05).In the 20-60 cm soil layer,soil organic carbon storage and mineral-associated organic carbon stor-age in Populus xiaozhuanica were significantly higher than in P.sylvestris var.mongolica plantations by 53.47%-54.97%and 59.08%-62.55%,respectively.In the 60-100 cm layer,the soil organic carbon storage in P.sylvestris var.mongolica plantations was 2.55 times that of Populus xiaozhuanica plantations,with significant difference(P<0.05).By delving into the differential impacts of various forest types on soil chemical and biological properties,this study reveals that the soil C:P ratio in sandy lands serves as a critical factor explaining the functionality of soil microbial communities.Populus xiaozhuanica plantations significantly enhance the fertility of surface soil,while P.sylvestris var.mongolica plantations demonstrate greater advantages in long-term carbon sequestration within deeper soil layers.Differ-ent tree species can thus be rationally allocated based on specific ecological restoration objectives.关键词
科尔沁沙地/人工林/土壤/化学性质/生物学性质/有机碳组分/微生物/氮转化Key words
Horqin Sandy Land/plantation/soil/chemical properties/biological properties/organic and factions/mi-crooragnisms/nitrogen transformation分类
农业科技引用本文复制引用
陶喆,周凤艳,王国晨,赵国军,张岩松,韩艳刚,雷泽勇..沙地主要人工林类型对土壤化学与生物学特性的差异化影响[J].森林工程,2026,42(5):918-932,15.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(JYTMS20230808) （JYTMS20230808）
国家自然科学基金项目(31570709). （31570709）
