Arid
DOI10.1111/avsc.12312
Combined effects of livestock grazing and abiotic environment on vegetation and soils of grasslands across Tibet
Wang, Yun1; Heberling, Gwendolyn2; Goerzen, Eugen3; Miehe, Georg4; Seeber, Elke1,2; Wesche, Karsten1,5,6
通讯作者Wang, Yun
来源期刊APPLIED VEGETATION SCIENCE
ISSN1402-2001
EISSN1654-109X
出版年2017
卷号20期号:3页码:327-339
英文摘要

QuestionsLivestock grazing and abiotic environmental factors both shape grassland systems; however, the relative importance of their impacts on plant species composition and soil fertility has rarely been investigated. Focusing on Tibetan grasslands, which are of global ecological importance and exhibit broad climatic and elevational gradients, we asked whether grazing effects are pronounced in humid regions, while climate controls are overriding grazing effects in semi-arid regions.


LocationTwenty-eight sites across Tibetan pastures, China; 2820-5150m a.s.l.


MethodsWe used multivariate analyses and generalized linear mixed models to examine the effects of livestock activity (hotspots with excessive trampling and nutrient input, heavy, moderate and light grazing), habitat (meadow, steppe, steppe-meadow) and their interactions. We focused on plant species composition, richness and concentrations of soil organic carbon (SOC), total N and other plant-available nutrients in soils. Major environmental factors were precipitation, temperature and elevation. Plant indicator species sensitive to trampling and/or grazing were identified.


ResultsLivestock grazing changed plant species composition and overall soil fertility across habitats. However, effects were only pronounced in hotspots directly adjacent to herder camps, while differences between grazing intensity levels were weak. Heavy grazing favoured annual species, reduced concentrations of SOC and total N in meadows. The environmental factors that control plant communities and soil condition varied among habitats. Plants and soils were more tightly linked in steppes and steppe-meadows than in meadows.


ConclusionsSeveral plant species were identified as frequently and reliably present in hotspots of livestock activity, thus are indicative of intensive trampling and excess plant available nutrient inputs. Overall, plant species composition and soil condition across Tibetan pastures were weakly affected by intensified grazing alone compared to that shaped by environmental factors. This clearly refutes the broadly held perception that increased grazing intensity leads to grassland degradation. Such differing and strong abiotic impacts should be considered in future grassland management and conservation.


英文关键词Abiotic gradient Alpine meadow Carbon Community Elevation Livestock grazing Nitrogen Nutrients Precipitation Species richness Tibetan steppe
类型Article
语种英语
国家Germany
收录类别SCI-E
WOS记录号WOS:000403676000003
WOS关键词PLANT-COMMUNITIES ; SPECIES RICHNESS ; ALPINE GRASSLAND ; ORGANIC-CARBON ; CLIMATE-CHANGE ; SMALL-SCALE ; PLATEAU ; DIVERSITY ; RANGELAND ; GRADIENTS
WOS类目Plant Sciences ; Ecology ; Forestry
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197437
作者单位1.Senckenberg Museum Nat Hist Gorlitz, POB 300154, D-02806 Gorlitz, Germany;
2.Ernst Moritz Arndt Univ Greifswald, Inst Landscape Ecol, Soldmannstr 15, D-17487 Greifswald, Germany;
3.Univ Kiel, Dept Landscape Ecol, Olshausenstr 75, D-24118 Kiel, Germany;
4.Philipps Univ Marburg, Fac Geog, Deutschhausstr 10, D-35032 Marburg, Germany;
5.German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany;
6.Tech Univ Dresden, Int Inst Zittau, Markt 23, D-02763 Zittau, Germany
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GB/T 7714
Wang, Yun,Heberling, Gwendolyn,Goerzen, Eugen,et al. Combined effects of livestock grazing and abiotic environment on vegetation and soils of grasslands across Tibet[J],2017,20(3):327-339.
APA Wang, Yun,Heberling, Gwendolyn,Goerzen, Eugen,Miehe, Georg,Seeber, Elke,&Wesche, Karsten.(2017).Combined effects of livestock grazing and abiotic environment on vegetation and soils of grasslands across Tibet.APPLIED VEGETATION SCIENCE,20(3),327-339.
MLA Wang, Yun,et al."Combined effects of livestock grazing and abiotic environment on vegetation and soils of grasslands across Tibet".APPLIED VEGETATION SCIENCE 20.3(2017):327-339.
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