摘要
本研究通过在中度退化高寒草甸免耕补播青海草地早熟禾、垂穗披碱草和中华羊茅,评估其对中度退化草地植被群落的影响。结果表明:免耕补播显著提高了植物生物量和多样性指数,同时降低了优势度指数,表明植物种类的丰富度得到增加。此外,免耕补播显著改变了植被群落结构,增加了禾本科和莎草科植物在群落中的优势地位,说明免耕补播对提升目标植物群落的贡献及对不利于草地恢复的杂草种群的抑制作用。同时,该措施增强了物种间互作性,提高了植被群落稳定性,从而为草地生态系统的恢复和管理提供了重要的生态学依据。
This study evaluated the effects of no-tillage reseeding with Poa partensis cv.Qinghai,Elymus nutans and Festuca sinensis on the vegetation community of moderately degraded alpine meadows.The results indicate that no-tilage reseeding significantly increased plant biomass and diversity indices while reducing dominance indices,indicating increased richness of plant species.Furthermore,no-tillage reseeding significantly altered the vegetation community structure by enhancing the dominance of Gramineae and Cyperaceae,suggesting its contribution to enhancing the target plant community and suppressing weed populations detrimental to grassland restoration.Additionally,this measure enhanced species interactions,improving vegetation community stability,thereby providing important ecological foundations for grassland ecosystem restoration and management.
作者
赵文
尹亚丽
马玉寿
王彦龙
李世雄
ZHAO Wen(Academy of Animal and Veterinary Science,Qinghai University/Qinghai Academy of Animal and Veterinary Science,Xining Qinghai 810016,China)
出处
《青海草业》
2024年第2期2-8,22,共8页
Qinghai Prataculture
基金
高寒补播草地土壤微生物特征对放牧调控的响应(2023-ZJ-921M)资助。
关键词
中度退化高寒草甸
免耕补播
植被群落
Moderately degraded alpine meadow
No-tillage reseeding
Vegetation community
