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Decline in medicinal and forage species with warming is mediated by plant traits on the Tibetan Plateau
Klein, Julia A.1; Harte, John2; Zhao, Xin-Quan3
2008-08-01
发表期刊ECOSYSTEMS
卷号11期号:5页码:775-789
文章类型Article
摘要Experimental studies of how global changes and human activities affect plant diversity often focus on broad measures of diversity and discuss the implications of these changes for ecosystem function. We examined how experimental warming and grazing affected species within plant groups of direct importance to Tibetan pastoralists: medicinal plants used by humans and palatable plants consumed by livestock. Warming resulted in species losses from both the medicinal and palatable plant groups; however, differential relative vulnerability to warming occurred. With respect to the percent of warming-induced species losses, the overall plant community lost 27%, medicinal plants lost 21%, and non-medicinal plants lost 40% of species. Losses of palatable and non-palatable species were similar to losses in the overall plant community. The deep-rootedness of medicinal plants resulted in lowered sensitivity to warming, whereas the shallow-rootedness of non-medicinal plants resulted in greater sensitivity to warming; the variable rooting depth of palatable and non-palatable plants resulted in an intermediate response to warming. Predicting the vulnerability of plant groups to human activities can be enhanced by knowledge of plant traits, their response to specific drivers, and their distribution within plant groups. Knowledge of the mechanisms through which a driver operates, and the evolutionary interaction of plants with that driver, will aid predictions. Future steps to protect ecosystem services furnished by medicinal and palatable plants will be required under the novel stress of a warmer climate. Grazing may be an important tool in maintaining some of these services under future warming.; Experimental studies of how global changes and human activities affect plant diversity often focus on broad measures of diversity and discuss the implications of these changes for ecosystem function. We examined how experimental warming and grazing affected species within plant groups of direct importance to Tibetan pastoralists: medicinal plants used by humans and palatable plants consumed by livestock. Warming resulted in species losses from both the medicinal and palatable plant groups; however, differential relative vulnerability to warming occurred. With respect to the percent of warming-induced species losses, the overall plant community lost 27%, medicinal plants lost 21%, and non-medicinal plants lost 40% of species. Losses of palatable and non-palatable species were similar to losses in the overall plant community. The deep-rootedness of medicinal plants resulted in lowered sensitivity to warming, whereas the shallow-rootedness of non-medicinal plants resulted in greater sensitivity to warming; the variable rooting depth of palatable and non-palatable plants resulted in an intermediate response to warming. Predicting the vulnerability of plant groups to human activities can be enhanced by knowledge of plant traits, their response to specific drivers, and their distribution within plant groups. Knowledge of the mechanisms through which a driver operates, and the evolutionary interaction of plants with that driver, will aid predictions. Future steps to protect ecosystem services furnished by medicinal and palatable plants will be required under the novel stress of a warmer climate. Grazing may be an important tool in maintaining some of these services under future warming.
关键词Ecosystem Services Warming Grazing Tibetan Plateau Medicinal Plants Plant Traits
WOS标题词Science & Technology ; Life Sciences & Biomedicine
学科领域生物科学
关键词[WOS]MANAGING ECOSYSTEM SERVICES ; CURRENT KNOWLEDGE ; FUNCTIONAL TYPES ; BIODIVERSITY ; RESPONSES ; DIVERSITY ; ECOLOGY ; CLIMATE ; MEADOW ; MICROCLIMATE
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Ecology
WOS记录号WOS:000258958700010
引用统计
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1196
专题中国科学院西北高原生物研究所
作者单位1.Colorado State Univ, Dept Forest Rangeland & Watershed Stewardship, Ft Collins, CO 80523 USA
2.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA
3.Chinese Acad Sci, NW Plateau Inst Biol, Xining Qinghai 810001, Peoples R China
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Klein, Julia A.,Harte, John,Zhao, Xin-Quan. Decline in medicinal and forage species with warming is mediated by plant traits on the Tibetan Plateau[J]. ECOSYSTEMS,2008,11(5):775-789.
APA Klein, Julia A.,Harte, John,&Zhao, Xin-Quan.(2008).Decline in medicinal and forage species with warming is mediated by plant traits on the Tibetan Plateau.ECOSYSTEMS,11(5),775-789.
MLA Klein, Julia A.,et al."Decline in medicinal and forage species with warming is mediated by plant traits on the Tibetan Plateau".ECOSYSTEMS 11.5(2008):775-789.
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