内蒙古农业大学学报（自然科学版）2026，Vol.47Issue(5)：17-25,9.DOI:10.16853/j.cnki.1009-3575.2026.05.003
科尔沁沙地南缘退化杨树人工林改造对土壤理化性质影响研究
Analysis of Physical and Chemical Properties of the Soil in the Artificial Forest on the Southern Edge of Horqin Sandy Land
摘要
Abstract
To understand the impact of degraded forest transformation on soil physical and chemical properties,a study was conduct-ed on degraded poplar plantations at the southern edge of the Horqin Sandy Land in Aohan Banner.Four experimental treatments were set up,i.e.,three mixed-planting transformation models(PE:Pinus sylvestris var.mongolica and Prunus persica,PU:Picea asperata and Caragana microphylla,and PP:Pinus sylvestris var.mongolica and Populus),and a control(CK)without transforma-tion.The study investigated and analyzed the effects of the transformation of degraded poplar plantations in the Horqin Sandy Land on soil physical and chemical properties.The results showed that the PE and PU transformation models had a significant impact on soil physical and chemical properties compared to the PP model(P<0.05).At different soil depths,the soil bulk density of the PE and PU groups was significantly lower than that of the CK group(P<0.05),while the soil porosity and soil moisture content of the PE and PU groups were significantly higher than those of the CK group(P<0.05).With the increase in soil depth,the trend of soil nitro-gen content decline in the three mixed-planting transformation models tended to level off.The alkali-hydrolyzable nitrogen content of the PP group was significantly higher than that of the CK group at different soil depths(P<0.05).The total carbon content of the PE and PU groups was higher than that of the CK group,and the total carbon content of the PE group was the highest at 40～60 cm.Soil pH and available phosphorus content were not significantly affected by the four treatments(P>0.05).With the increase in soil depth,the soil organic matter content of all four treatments showed a decreasing trend,except for the 0～10 cm soil layer where there was no significant difference in soil organic matter content among the groups(P>0.05),the soil organic matter content of the PE,PU,and PP groups was higher than that of the CK group in other soil layers.The research results are of great significance for soil management in forest ecosystems and the restoration of degraded vegetation.关键词
科尔沁沙地/人工林/退化/改造/土壤理化性质Key words
Horqin sandy land/Artificial forest/Degradation/Transformation/Soil physical and chemical properties分类
农业科技引用本文复制引用
赵梦迪,赵鹏武,刘晓彬,曹立春,岳永杰..科尔沁沙地南缘退化杨树人工林改造对土壤理化性质影响研究[J].内蒙古农业大学学报（自然科学版）,2026,47(5):17-25,9.基金项目
内蒙古自治区科技计划项目(2022YFDZ0030-01) （2022YFDZ0030-01）
内蒙古自治区直属高校基本科研业务费项目(BR251008) （BR251008）
