生态系统
功能多样性
生态学
功能群
生态系统多样性
多样性(政治)
生产力
草原
生物多样性
栖息地
作文(语言)
环境科学
生物
化学
语言学
哲学
宏观经济学
有机化学
社会学
人类学
经济
聚合物
作者
David Tilman,Johannes M. H. Knops,David A. Wedin,Peter B. Reich,Mark E. Ritchie,Evan Siemann
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:1997-08-29
卷期号:277 (5330): 1300-1302
被引量:2623
标识
DOI:10.1126/science.277.5330.1300
摘要
Humans are modifying both the identities and numbers of species in ecosystems, but the impacts of such changes on ecosystem processes are controversial. Plant species diversity, functional diversity, and functional composition were experimentally varied in grassland plots. Each factor by itself had significant effects on many ecosystem processes, but functional composition and functional diversity were the principal factors explaining plant productivity, plant percent nitrogen, plant total nitrogen, and light penetration. Thus, habitat modifications and management practices that change functional diversity and functional composition are likely to have large impacts on ecosystem processes.
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