草业学报2026，Vol.35Issue(4)：1-13,13.DOI:10.11686/cyxb2025196
轮牧对荒漠草原土壤种子库特征的影响
Effects of rotational grazing on characteristics of the soil seed bank in desert steppe
摘要
Abstract
The soil seed bank is crucial for maintaining the stability,diversity,and genetic integrity of grassland plant communities.Knowledge of the impact of grazing disturbance on the soil seed bank is essential for the scientific management of grasslands.This research focused on two desert grasslands in gravelly sierozem desert steppe and sandy loam sierozem desert steppe.Field rotational grazing experiments and indoor germination tests were conducted to examine the effects of short-term rotational grazing on the soil seed bank.Results indicate that rotational grazing is not significantly altering soil seed bank density in desert grassland of either soil texture;however,it is driving an increase in perennial plant seed proportions,with seeds showing strong concentration within the 0-5 cm soil layer.Compared to grazing exclusion by fencing,the gravelly sierozem desert steppe under rotational grazing showed an increase in the Shannon index and a decrease in the Simpson index.In contrast,the sandy loam sierozem desert steppe had increases in both the Margalef and Simpson indices.However,the Pielou index of the seed bank did not change significantly with rotational grazing in either type of grassland.The similarity between the seed bank species and aboveground vegetation species was low,with the sandy loam sierozem desert steppe showing overall higher similarity than the gravelly sierozem desert steppe.In the gravelly sierozem desert steppe,the seed bank was mainly influenced by soil factors such as available potassium and pH,while in the sandy loam sierozem desert steppe,it was more affected by total phosphorus and ammonium nitrogen.This study suggests that rotational grazing has a significant impact on the species composition and density of the soil seed bank in desert steppe.Soil texture and environmental factors collectively impact soil seed bank dynamics.关键词
土壤种子库/组成和密度/多样性和相似性/短期轮牧/荒漠草原Key words
soil seed bank/composition and density/diversity and similarity/short-term rotational grazing/desert steppe引用本文复制引用
李豫悦,马红彬,魏浩男,马兴忠,姜海鑫,聂明鹤,周瑶,代成江,田小武,王国会..轮牧对荒漠草原土壤种子库特征的影响[J].草业学报,2026,35(4):1-13,13.基金项目
宁夏中央引导地方科技发展专项(2023FRD05035),国家自然科学基金(32371783),中卫市2024年退化草原生态修复项目监测与评价项目,原州区草原季节性放牧试点效应监测评价项目(2023)和中卫市沙坡头区2024年防沙治沙示范建设项目资助. （2023FRD05035）
