草业科学2026，Vol.43Issue(8)：1953-1964,12.DOI:10.11829/j.issn.1001-0629.2026-0002
高寒地区栽培草地物种多样性与生态系统多功能性关系对建植年限的响应
Responses of ecosystem multifunctionality and its relationship with species diversity to establishment age in alpine artificial grasslands:A Meta-analysis
摘要
Abstract
To reveal the response of ecosystem multifunctionality(EMF)to establishment age and its relationship with biodiversity ecosystem multifunctionality(BEMF)in alpine artificial grasslands,this study focused on natural grasslands,degraded grasslands,and artificial grasslands of different establishment ages on the Qinghai-Xizang Plateau.We integrated 160 data sets from 27 studies published before 2025 using Meta-analysis to explore community characteristics,EMF dynamics,and BEMF relationships across three developmental stages:the initial establishment stage(1-5 years),fluctuation stage(6-14 years),and stable stage(≥15 years).The results showed that:1)Compared with degraded grasslands,both community coverage and aboveground biomass in artificial grasslands increased significantly;species richness increased with increasing establishment age,whereas belowground biomass remained relatively low.Compared with natural grasslands,only aboveground biomass in artificial grasslands was significantly higher(P<0.05),whereas the plant community Shannon diversity index,coverage,and belowground biomass were all significantly lower(P<0.05).2)Throughout the establishment period,the EMF of artificial grasslands was significantly higher than that of degraded grasslands,with the difference increasing from 0.085 in the initial stage to 0.484 in the stable stage.Meanwhile,EMF was significantly lower than that of natural grasslands,although this gap narrowed from 0.454 in the initial stage to 0.276 in the stable stage.This indicates that artificial grasslands act as intermediate ecosystems.3)Species richness was the key factor supporting EMF in artificial grasslands,but its explanatory power exhibited an inverted U-shaped pattern across establishment years(R2 increased from 0.442 in the initial stage to 0.742 in the fluctuation stage and then decreased to 0.394 in the stable stage).Conversely,the role of the Shannon diversity index became more prominent with increasing establishment age,surpassing species richness in explanatory power for EMF during the stable stage(R2=0.625).Through a large-sample integrated analysis,this study identified the characteristics of EMF and its relationship with species diversity in alpine artificial grasslands across different establishment stages,advanced the systematic understanding of the long-term ecological effects of alpine artificial grasslands,and provided a scientific basis for maintaining EMF and implementing stage-specific management of alpine artificial grasslands.关键词
栽培草地/高寒地区/物种多样性/群落盖度/生态系统多功能性/建植年限/地下生物量Key words
artificial grassland/alpine region/species diversity/plant coverage/ecosystem multifunctionality/establishment age/belowground biomass引用本文复制引用
张萌鑫,杨会萍,石培礼,宗宁,杨珏婕,毛睿,张雅娴,王长庭,胡雷..高寒地区栽培草地物种多样性与生态系统多功能性关系对建植年限的响应[J].草业科学,2026,43(8):1953-1964,12.基金项目
国家重点研发计划项目(2023YFF1304304) （2023YFF1304304）
西南民族大学中央高校项目(ZYN2025001) （ZYN2025001）
三江源国家公园"多功能性"草地综合评价项目(QHQXD-2023-28) （QHQXD-2023-28）
