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题名: Decline in medicinal and forage species with warming is mediated by plant traits on the Tibetan Plateau
作者: Klein, Julia A.1; Harte, John2; Zhao, Xin-Quan3
刊名: ECOSYSTEMS
出版日期: 2008-08-01
卷号: 11, 期号:5, 页码:775-789
关键词: ecosystem services ; warming ; grazing ; Tibetan Plateau ; medicinal plants ; plant traits
学科分类: 生物科学
文章类型: Article
中文摘要: 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.
英文摘要: 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.
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Ecology
研究领域[WOS]: Environmental Sciences & Ecology
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记录号: WOS:000258958700010
Citation statistics:
内容类型: 期刊论文
URI标识: http://210.75.249.4/handle/363003/1196
Appears in Collections:中国科学院西北高原生物研究所_期刊论文

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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

Recommended Citation:
Klein Julia A.,Harte John,Zhao XinQuan.Decline in medicinal and forage species with warming is mediated by plant traits on the Tibetan Plateau. ECOSYSTEMS,2008,11(5):775-789
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