草地学报2026，Vol.34Issue(7)：2553-2567,15.DOI:10.11733/j.issn.1007-0435.2026.07.019
高寒草甸退化斑块植物群落演替特征及土壤限制因子研究
Study on the Succession Characteristics of Plant Communities and Soil Limiting Factors in Degraded Patches of Alpine Meadow
摘要
Abstract
In this study,four typical patches under the conditions of shoaly land and sloping land,including bare patches,short-term restoration patches,long-term restoration patches and healthy alpine meadow,were selected.Through plant quadrat survey,the changes of community characteristics in different types of patches during natural restoration and succession were analyzed,and their correlation with soil factors was discussed.The differences of plant community characteristics and key soil limiting factors in different types of patches were revealed.The results showed that with the restoration succession,the plant diversity of shoaly land and sloping land increased signifi-cantly,and the functional group coverage and aboveground biomass were significantly different.The quantitative characteristics,diversity,coverage of functional groups(except Fabaceae)and aboveground biomass of plant com-munities in shoaly land were higher than those in sloping land.Plant community indexes were positively correlated with soil water content,temperature,conductivity,organic carbon,total nitrogen,total phosphorus,nitrate nitro-gen and ammonium nitrogen,and negatively correlated with pH value.Organic carbon,total phosphorus,total nitrogen and ammonium nitrogen were the key limiting factors of plant community characteristics in shoaly land,and pH,ammonium nitrogen and organic carbon were the key limiting factors of plant community characteristics in sloping land.In short,the soil conditions of the patchily degraded alpine meadow had been improved and restored,which in turn promoted the positive succession of plant communities.关键词
立地条件/斑块化退化/高寒草甸/恢复演替/植物群落特征/土壤因子Key words
Site condition/Patchy degradation/Alpine meadows/Restoration succession/Plant community char-acteristics/Soil factors分类
农业科技引用本文复制引用
马婧娟,李希来,尹通江,柴瑜,高佩,李成一,吴勇,周怡志..高寒草甸退化斑块植物群落演替特征及土壤限制因子研究[J].草地学报,2026,34(7):2553-2567,15.基金项目
国家自然科学联合基金重点支持项目(U23A20159,U21A20191) （U23A20159,U21A20191）
青海省科学技术厅项目(2023-QY-210) （2023-QY-210）
高等学校学科创新引智计划项目(D18013)资助 （D18013）
