水土保持研究2025，Vol.32Issue(1)：66-72,7.DOI:10.13869/j.cnki.rswc.2025.01.007
黄棕壤典型草地不同根系结构土壤团聚体稳定性季节变化特征
Seasonal variation of soil aggregate stability of typical yellow brown soil in grasslands with different root structures
摘要
Abstract
[Objective]The aims of this study are to explore the seasonal variation characteristics of aggregate stability and its influencing factors in Yellow Brown Soil,and to provide a theoretical and practical basis for regional soil erosion control.[Methods]The paired T-test was used to analyze the seasonal variation differences of aggregate stability among the three types of plots,fibrous root(Setaria viridis),straight root(Artemisia apiacea)and bare ground control.The factors affecting the seasonal variation of aggregate stability were determined by Pearson correlation analysis.The fitting equation of aggregate stability was established by regression analysis.[Results]The MWD of Setaria viridis and Artemisia apiacea fluctuated significantly with seasonal changes.Both MWD of Setaria viridis and Artemisia apiacea were significantly different from that of bare ground(p＜0.05).However,there existed no significant difference between them(p＞0.05).The MWD in Setaria viridis and Artemisia apiacea was significantly affected by root density(p＜0.05).There was a significant correlation between the MWD of Artemisia apiacea and soil compactness.Regression analysis showed that MWD could be well fitted with root density and compactness(R2=0.730,NSE=0.730).[Conclusion]The root structures of both grasslands enhanced soil aggregates stability in yellow brown soil and significantly influenced the seasonal variations of soil aggregate stability.However,the impact of different root structures on soil aggregates stability did not show any significant differences.关键词
土壤团聚体稳定性/季节变化/植物根系/根系类型Key words
soil aggregate stability/seasonal variation/plant roots/root type分类
农业科技引用本文复制引用
杨程高歌,雷少华,耿韧,周岩,金秋,赵广举,卢慧中,孙国昌..黄棕壤典型草地不同根系结构土壤团聚体稳定性季节变化特征[J].水土保持研究,2025,32(1):66-72,7.基金项目
国家自然科学基金项目(41907049) （41907049）
安徽省自然科学基金项目(2308085US04) （2308085US04）
南京水利科学研究院中央级公益性科研院所基本科研业务费专项资金项目(Y923005 （）
Y922001) （）
江西省水利科学院开放研究基金(2023SKTR06) （2023SKTR06）
