NWIPB OpenIR
Predicting plant traits and functional types response to grazing in an alpine shrub meadow on the Qinghai-Tibet Plateau
Zhu ZhiHong1; Wang XiaoAn1; Li YingNian2; Wang Gang3; Guo Hua1
2012-05-01
Source PublicationSCIENCE CHINA-EARTH SCIENCES
ISSN1674-7313
Volume55Issue:5Pages:837-851
SubtypeArticle
AbstractThe identification of easily measured plant functional types (PFTs) that consistently predict grazing response would be a major advance. The responses to grazing of individual traits and PFTs were analyzed along a grazing gradient in an alpine shrub meadow on the Qinghai-Tibet Plateau, China. Three response types were identified; grazing increaser (GI), grazing decreaser (GD), and neutral (NE) for both traits and PFTs. Seven traits were measured: plant height, economic group, cotyledon type, plant inclination, growth form, life cycle, and vegetative structure. The first five were significantly affected by grazing. Ordinal regressions for grazing response of the seven traits showed that the best single predictors of response were growth form (including the attributes "Scattered", "Bunched" or "Closely Bunched"), and plant inclination ("Rosette", "Prostrate", or "Erect"), followed by economic group ("Shrub", "Grass", "Sedge", "Legume", "Forb", or "Harmful") and plant height ("Tall", "Medium", or "Small"). Within the four optimal traits, the summed dominance ratio (SDR) of small plants, forbs, rosette and bunched plants, invariably increased, while that of tall plants, shrubs, grasses, and erect plants decreased, when grazing pressure was enhanced. Canonical correspondence analysis (CCA) identified eleven explanatory PFTs based on 195 defined PFTs, by combining the different attributes of the four optimal traits. Among explanatory PFTs, the most valuable in predicting the community response to grazing were TallxShrubxErectxScattered and SmallxForbxRosette, as these have the closest connections with grazing disturbance and include fewer species. Species richness, diversity, and community evenness, did not differ among grazing treatments because turnover occurred in component species and their relative abundances along the grazing gradient. We have demonstrated that a minimum set of PFTs resulting from optimal individual traits can provide consistent prediction of community responses to grazing in this region. This approach provides a more accurate indicator of change within a changing environment than do univariate measures of species diversity. We hope to provide a link between management practices and vegetation structure, forming a basis for future, large scale, plant trait comparisons.; The identification of easily measured plant functional types (PFTs) that consistently predict grazing response would be a major advance. The responses to grazing of individual traits and PFTs were analyzed along a grazing gradient in an alpine shrub meadow on the Qinghai-Tibet Plateau, China. Three response types were identified; grazing increaser (GI), grazing decreaser (GD), and neutral (NE) for both traits and PFTs. Seven traits were measured: plant height, economic group, cotyledon type, plant inclination, growth form, life cycle, and vegetative structure. The first five were significantly affected by grazing. Ordinal regressions for grazing response of the seven traits showed that the best single predictors of response were growth form (including the attributes "Scattered", "Bunched" or "Closely Bunched"), and plant inclination ("Rosette", "Prostrate", or "Erect"), followed by economic group ("Shrub", "Grass", "Sedge", "Legume", "Forb", or "Harmful") and plant height ("Tall", "Medium", or "Small"). Within the four optimal traits, the summed dominance ratio (SDR) of small plants, forbs, rosette and bunched plants, invariably increased, while that of tall plants, shrubs, grasses, and erect plants decreased, when grazing pressure was enhanced. Canonical correspondence analysis (CCA) identified eleven explanatory PFTs based on 195 defined PFTs, by combining the different attributes of the four optimal traits. Among explanatory PFTs, the most valuable in predicting the community response to grazing were TallxShrubxErectxScattered and SmallxForbxRosette, as these have the closest connections with grazing disturbance and include fewer species. Species richness, diversity, and community evenness, did not differ among grazing treatments because turnover occurred in component species and their relative abundances along the grazing gradient. We have demonstrated that a minimum set of PFTs resulting from optimal individual traits can provide consistent prediction of community responses to grazing in this region. This approach provides a more accurate indicator of change within a changing environment than do univariate measures of species diversity. We hope to provide a link between management practices and vegetation structure, forming a basis for future, large scale, plant trait comparisons.
KeywordAlpine Shrub Meadow Grazing Response Optimal Traits Plant Functional Types
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordCOMMUNITY COMPOSITION ; SPECIES RESPONSES ; VEGETATION ; DISTURBANCE ; GRASSLAND ; ECOSYSTEM ; MANAGEMENT ; PRODUCTIVITY ; GRADIENT ; LAND
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000303862500015
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/3676
Collection中国科学院西北高原生物研究所
Affiliation1.Shaanxi Normal Univ, Coll Life Sci, Xian 710062, Peoples R China
2.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810008, Peoples R China
3.Lanzhou Univ, Coll Life Sci, Lanzhou 710000, Peoples R China
Recommended Citation
GB/T 7714
Zhu ZhiHong,Wang XiaoAn,Li YingNian,et al. Predicting plant traits and functional types response to grazing in an alpine shrub meadow on the Qinghai-Tibet Plateau[J]. SCIENCE CHINA-EARTH SCIENCES,2012,55(5):837-851.
APA Zhu ZhiHong,Wang XiaoAn,Li YingNian,Wang Gang,&Guo Hua.(2012).Predicting plant traits and functional types response to grazing in an alpine shrub meadow on the Qinghai-Tibet Plateau.SCIENCE CHINA-EARTH SCIENCES,55(5),837-851.
MLA Zhu ZhiHong,et al."Predicting plant traits and functional types response to grazing in an alpine shrub meadow on the Qinghai-Tibet Plateau".SCIENCE CHINA-EARTH SCIENCES 55.5(2012):837-851.
Files in This Item: Download All
File Name/Size DocType Version Access License
Predicting plant tra(537KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhu ZhiHong]'s Articles
[Wang XiaoAn]'s Articles
[Li YingNian]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhu ZhiHong]'s Articles
[Wang XiaoAn]'s Articles
[Li YingNian]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhu ZhiHong]'s Articles
[Wang XiaoAn]'s Articles
[Li YingNian]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Predicting plant traits and__ functional types response to grazing in.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.