Changes in functional traits and diversity of typical alpine grasslands after a short-term trampling disturbance

被引:4
|
作者
Li, Wei [1 ,2 ]
Zheng, Ting Dan [3 ]
Cheng, Xi Ping [1 ,2 ]
He, Shu Qiang [1 ]
机构
[1] Southwest Forestry Univ, Sch Geog & Ecotourism, Kunming, Yunnan, Peoples R China
[2] Natl Forestry & Grassland Adm, Southwest Res Ctr Ecocivilizat, Kunming, Yunnan, Peoples R China
[3] Southwest Forestry Univ, Coll Biodivers Conservat & Utilizat, Kunming, Yunnan, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
alpine grasslands; trampling disturbance; functional traits; functional diversity; Shangri-La; VEGETATION; FRAMEWORK; TOURISM; IMPACT; BIODIVERSITY; PREDICT; FOREST;
D O I
10.3389/fevo.2023.1154911
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Alpine grassland ecosystem supports high diversity of terrestrial flora and fauna species. Despite the ecological importance and economic potential of this unique ecosystem type, it experiences increasing anthropogenic disturbances such as trampling, which impose negative impact on the health and integrity of alpine grasslands. Previous studies of trampling impact on alpine vegetation mainly focus on changes in vegetation cover and taxonomic diversity after trampling disturbance, but rarely test community-level responses of alpine vegetation to trampling from a functional trait perspective. Through the lens of vegetation functional traits, the present study evaluates the impacts of simulated trampling on typical alpine grasslands in Shangri-la, China. The results showed that although increased trampling intensity did not always lead to changes in functional diversity across all three experimental sites, characteristics of community-weighted mean trait values had consistently changed toward plant species with shorter height, reduced leaf area and lower leaf dry matter content, and such strong shifts in functional attributes may further affect ecosystem goods and services provided by alpine grasslands. Therefore, a functional trait approach can help us better understand the mechanisms that drive trait changes, function shifts and vegetation stability following anthropogenic disturbances.
引用
收藏
页数:9
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