草业学报2026，Vol.35Issue(2)：28-39,12.DOI:10.11686/cyxb2025084
短期羊粪归还对荒漠草地土壤质量的影响
Effects of short-term sheep manure return on soil quality of desert steppe
摘要
Abstract
The return of livestock manure through grazing plays a significant role in grassland soil nutrient cycling and improvement of physical properties.However,the impact of short-term livestock manure return on soil quality in desert steppes remains understudied.This research simulated sheep manure accumulation under different grazing intensities to explore the effects of four manure accumulation levels(MN,0 kg·ha−1;ML,4000 kg·ha−1;MM,8000 kg·ha−1;MH,16000 kg·ha−1)on soil quality of a desert steppe in Yanchi,Ningxia.The results demonstrated:1)After two years of manure application,soil temperature tended to increase with increased manure accumulation level,although the average soil temperature differed significantly only in MH compared to MN,ML and MM(P<0.05).Similarly,average soil moisture content was significantly higher in MH than in ML and MM(P<0.05).2)Soil pH decreased while extracellular enzyme activity increased with increased manure accumulation.3)Manure return promoted the formation of soil macro-aggregates while reducing the proportion of micro-aggregates quantities,and the soil stability increased with increased accumulation of sheep manure.4)Compared to MN,ML,MM and MH also significantly enhanced the soil quality index(P<0.05).Correlation analysis and structural equation modelling further revealed that manure return improved soil hydrothermal conditions,and stimulated enzyme activities related to carbon and nitrogen cycling,thereby increasing nutrient inputs and macro-aggregate formation,and ultimately enhancing soil quality.In conclusion,low,medium and high levels of manure application effectively improved soil quality,providing both a theoretical foundation and practical guidance for restoring degraded grassland soils.关键词
荒漠草原/羊粪蓄积/胞外酶/土壤养分/团聚体/土壤质量Key words
desert steppe/sheep manure accumulation/extracellular enzymes/soil nutrients/aggregates/soil quality引用本文复制引用
刘冬娅,杨燕,刘静,王博,李志刚..短期羊粪归还对荒漠草地土壤质量的影响[J].草业学报,2026,35(2):28-39,12.基金项目
宁夏重点研发项目(2021BEG03010,2021BEB04002)和宁夏自然科学基金(2022AAC05013)资助. （2021BEG03010,2021BEB04002）
