草原与草坪2026，Vol.46Issue(2)：1-10,10.DOI:10.13817/j.cnki.cyycp.2026.02.001
有机肥对亚高山山地草甸植被群落特征和土壤养分的影响
Effects of organic fertilizer on vegetation community characteristics and soil nutrients in subalpine montane meadow
摘要
Abstract
[Objective]This study aimed to evaluate the effects of organic fertilizer application on soil nutrients and vegetation community characteristics in subalpine meadow ecosystems,in order to mitigate declines in soil fertil-ity and vegetation cover associated with excessive chemical fertilizer use.[Method]Six organic fertilizer application rates were established(O1:0.225 kg/m2,O2:0.375 kg/m2,O3:0.525 kg/m2,O4:0.675 kg/m2,O5:0.825 kg/m2,O6:0.650 kg/m2).Vegetation community characteristics,soil physicochemical properties,and soil enzyme activities were analyzed using correlation analysis and redundancy analysis(RDA).[Result]Organic fertilizer application sig-nificantly increased aboveground biomass,with the O5 treatment yielding the highest biomass,44.74%greater than the control.Soil organic matter,total nitrogen,alkali-hydrolyzed nitrogen,available phosphorus,and urease activity were significantly enhanced.Correlation analysis and redundancy analysis indicated that aboveground biomass was positively correlated with pH,organic matter,total nitrogen,alkali-hydrolyzed nitrogen,total phosphorus,available phosphorus,urease,and sucrase activity.The Pielou index was positively correlated with available phosphorus,the Simpson index was positively correlated with alkali-hydrolyzed nitrogen content,and the Shannon-Wiener index was positively correlated with soil pH.[Conclusion]Organic fertilizer application significantly improves both the pro-ductivity and soil fertility in subalpine mountain meadow,with medium to high application rates showing the most pro-nounced effects.These findings provide a theoretical basis for the application of organic fertilizer in the restoration and sustainable management of degraded grasslands.关键词
草地退化/有机肥/植被群落特征/土壤理化性质/土壤酶活性Key words
grassland degeneration/organic fertilizer/phytocoenosium character/physical and chemical properties of soil/soil enzyme activity分类
农业科技引用本文复制引用
王俊杰,曹文侠,王正文,孟愉欣,代蓉,刘苏兴..有机肥对亚高山山地草甸植被群落特征和土壤养分的影响[J].草原与草坪,2026,46(2):1-10,10.基金项目
西藏自治区科技计划重大专项(XZ202201ZY0014N) （XZ202201ZY0014N）
