西南林业大学学报2026，Vol.46Issue(3)：115-120,6.DOI:10.11929/j.swfu.202504020
紫色土典型植被类型表层土壤团聚体稳定性差异分析
Analysis of Difference in Surface Soil Aggregate Stability of Typical Vegetation Types in Purple Soil
摘要
Abstract
In the Qinling small watershed of Zhongxian County,situated within the hinterland of the Three Gorges Reservoir region,7 representative vegetation types of Cupressus funebris,Pinus massoniana,Euca-lyptusspp.,Citrus reticulata,shrub,grassland and maize were selected to examine the variations in soil aggregate stability across different vegetation categories and to analyze the factors influencing these variations.The result showed the content of soil aggregates＞0.25mm(WSA＞0.25),mean weight diameter(MWD),and geometric mean diameter(GMD)varied from 27.12-91.79％、0.71-5.61 mm and 0.25-4.00 mm among different vegetation types.And maize land had the minimum mean WSA＞0.25,MWD and GMD,whereas shrubland of Vitex negundo had the maximum ones.The stability of soil aggregate is comprehensively affected by soil properties and vegeta-tion characteristics.The WSA＞0.25,MWD and GMD were significantly positively correlated with soil organic mat-ter content,WSA＞0.25 was significantly positively correlated with plant root mass density,and MWD was signific-antly positively correlated with plant litter accumulation.However,WSA＞0.25,MWD and GMD increased logar-ithmically with the increase of soil organic matter content,litter accumulation,and root mass density.The result of redundancy analysis showed that soil organic matter content,clay content,and plant litter accumulation were the main factors attributing to the differences in soil aggregate stability.关键词
团聚体稳定性/植被类型/紫色土/三峡库区Key words
aggregate stability/vegetation type/purple soil/Three Gorges Reservoir area分类
农业科技引用本文复制引用
谭塑,彭旺,张良胜,卢化,张颖,王倩茜,朱平宗,陈展鹏..紫色土典型植被类型表层土壤团聚体稳定性差异分析[J].西南林业大学学报,2026,46(3):115-120,6.基金项目
国网重庆市电力公司北碚供电分公司重点科技项目(522006240008)资助. （522006240008）
