山西大学学报（自然科学版）2024，Vol.47Issue(5)：1068-1078,11.DOI:10.13451/j.sxu.ns.2023120
晋北刈割草地土壤有机氮矿化和真菌多样性特征
Soil Organic Nitrogen Mineralization and Fungal Diversity Characteristics of Mowing Grassland in Northern Shanxi Province
摘要
Abstract
In order to investigate the effect of mowing intensity on the relationship between soil organic nitrogen mineralization and fungal diversity in grassland in northern Shanxi Province,soil nitrogen mineralization in situ field experiment and soil fungal com-munity analysis were conducted on the mowed grassland.The results showed that soil net nitrogen mineralization was the highest un-der moderate mowing intensity in August.The mean values of soil net nitrogen mineralization during the whole growing season from high to low were in the following order:moderate mowing,heavy mowing,light mowing and no mowing.Soil net nitrogen mineralization of moderate mowing treatment was the highest and significantly higher than that in no mowing treatment in the grow-ing season.The diversity of soil fungi community was increased by mowing treatment.The ACE index,Chao index and Shannon-Wiener index reached the maximum under moderate mowing intensity(737.2,738.5 and 4.506,respectively),and the Simpson index reached the maximum under heavy mowing intensity(0.072).Mortierellomycota and Mortierella were inhibited by the net nitrate ni-trogen content and net nitrogen mineralization content of the month,while Epicoccum had a negative effect on the monthly net am-monium nitrogen content.Soil total carbon significantly promoted the abundance of Ascomycota,Gibberella and Neocosmospora,while soil C/N ratio promoted the abundance of Pezizella.关键词
农牧交错带/刈割强度/有机氮矿化/土壤真菌群落Key words
agro-pasture ecotone/mowing intensity/organic nitrogen mineralization/soil fungal community分类
农业科技引用本文复制引用
王犇,欧俊,任歆玥,郝杰,米佳,王常慧,董宽虎..晋北刈割草地土壤有机氮矿化和真菌多样性特征[J].山西大学学报（自然科学版）,2024,47(5):1068-1078,11.基金项目
山西省基础研究计划资助项目(202203021211303 （）
202203021221014) （）
国家自然科学基金(31572452) （31572452）
