土壤与作物2025，Vol.14Issue(2)：180-187,8.DOI:10.11689/sc.2024041101
长白山区复合生态系统土壤肥力特征及影响因素分析
Soil fertility characteristics and influencing factors in compound ecosystem of the Changbai Mountain
摘要
Abstract
The unique topography and climate of the Changbai Mountain has developed fertile forest soil.With modern reclamation,the region has turned into a compound ecosystem with three components of forest,forest-farmland transition and farmland.In this study,soil nutrient content,magnetization rate,and particle size grading analysis were determined for the three land uses.The soil nutrients of different ecosystems were examined and analyzed using the Mantel test with focus on the similarity between forest and farmland soil nutrients.The effect of slope change on the relationship between forest soils and farmland soils under water erosion was also analyzed.The results showed that the total organic matter of forest and farmland soils is 9.70%and 4.92%,respec-tively.The forest soils have the highest nutrient content,while the sloping cultivated soils are lower than that of forest soils.The changes in the coefficients of the Mantel test indicate that changes in land use affect soil properties,and tillage leads to a decrease in farmland nutrient content but an increase in the proportion of clay particles.The linear fitting of the correlation coeffi-cients to the landform by the Mantel test shows that slope dominates the migration of soil nutrients in the cultivated soils of the Changbai Mountain region.Water erosion causes nutrients washed away in forest soils,which moves with water flow to down-stream sloping farmland.The correlation coefficients of soil nutrients in different ecosystems gradually increase with increasing slope,and more nutrients are drained to sloping cropland soils.In the Changbai Mountain area,the deployment of composite ecosystem sample strips and the implementation of reasonable farming systems can effectively reduce soil nutrient loss and slow down the process of soil degradation,thus promoting the sustainable development of sloping arable land and guaranteeing food security.关键词
水土侵蚀/长白山区/坡耕地/土壤质量Key words
soil erosion/the Changbai Mountain/sloping farmland/soil quality分类
农业科学引用本文复制引用
胡卓楠,杨亮,王国平,韩冬雪,高传宇..长白山区复合生态系统土壤肥力特征及影响因素分析[J].土壤与作物,2025,14(2):180-187,8.基金项目
中国科学院战略性先导科技专项(A类)XDA28020401和吉林省科技发展计划项目(YDZJ202301ZYTS214)资助. （A类）
