中国水土保持科学2026，Vol.24Issue(3)：51-63,13.DOI:10.16843/j.sswc.2025307
不同治理年限坡耕地侵蚀沟的土壤养分变化特征
Variation characteristics of soil nutrients in erosion gullies on sloping farmland with different treatment durations
摘要
Abstract
[Objective]Due to the combined effects of human activities and natural factors,soil and water loss in the black soil region is becoming increasingly severe,with gully erosion being the most severe form.Gully erosion not only leads to the loss of black soil resources and a decline in crop yields,but also causes deterioration of soil ecological functions,posing a threat to national food security and ecological balance.[Methods]To investigate the variation patterns of soil nutrients in erosion gullies on sloping farmland with different treatment durations,this study selected erosion gullies treated for 2 and 7 years as study subjects,with developing gullies serving as controls.Soil samples were collected from the gully slopes and gully bottoms using the diagonal sampling method,and nutrients were measured.Correlation analysis and principal component analysis were applied to elucidate the variation patterns of soil nutrients in the 2-year and 7-year treated gullies.[Results]1)Compared with the developing gully,the mass fractions of soil organic matter,total nitrogen,alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium,and available potassium in the erosion gullies treated for 2 and 7 years were all significantly higher(P<0.05).2)There was a significant positive correlation among the various nutrient indicators,and the correlation coefficients increased with increasing treatment duration.3)The comprehensive evaluation scores from principal component analysis were,in descending order:7-year treated gully(2.303)>2-year treated gully(1.747)>developing gully(0.873),indicating that a longer treatment duration significantly enhanced the overall recovery level of soil nutrients.[Conclusions]Treatment measures can significantly increase soil nutrient content in erosion gullies,and the restoration effect continues to strengthen with increasing treatment duration.Long-term treatment promotes the holistic and synergistic recovery of various soil nutrient indicators.The process of soil nutrient recovery varies markedly across different soil depths,and long-term treatment can effectively improve the profile distribution characteristics of nutrients.关键词
土壤养分/侵蚀沟/治理年限/东北黑土区Key words
soil nutrients/erosion gullies/treatment duration/black soil region of Northeast China分类
农业科技引用本文复制引用
梁欣平,刘烨,王倡宪,王贝瑶,何美芳,徐金忠,张美芝,肖洋..不同治理年限坡耕地侵蚀沟的土壤养分变化特征[J].中国水土保持科学,2026,24(3):51-63,13.基金项目
国家重点研发计划项目子课题"黑土区农田水土流失防治保护性利用模式与应用"(2021YFD150080503) Sub-project of the National Key R&D Plan"Protective Utilization Model and Application for Water and Soil Erosion Control in Farmland of the Black Soil Region"(2021YFD150080503) （2021YFD150080503）
