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DOI	10.1126/science.1076347
	Rainfall variability, carbon cycling, and plant species diversity in a mesic grassland
	Knapp A.K.; Fay P.A.; Blair J.M.; Collins S.L.; Smith M.D.; Carlisle J.D.; Harper C.W.; Danner B.T.; Lett M.S.; McCarron J.K.
发表日期	2002
ISSN	0036-8075
起始页码	2202
结束页码	2205
卷号	298 期号:5601
英文摘要	Ecosystem responses to increased variability in rainfall, a prediction of general circulation models, were assessed in native grassland by reducing storm frequency and increasing rainfall quantity per storm during a 4-year experiment. More extreme rainfall patterns, without concurrent changes in total rainfall quantity, increased temporal variability in soil moisture and plant species diversity. However, carbon cycling processes such as soil CO2 flux, CO2 uptake by the dominant grasses, and aboveground net primary productivity (ANPP) were reduced, and ANPP was more responsive to soil moisture variability than to mean soil water content. Our results show that projected increases in rainfall variability can rapidly alter key carbon cycling processes and plant community composition, independent of changes in total precipitation.
英文关键词	Biodiversity; Carbon dioxide; Climate change; Ecosystems; Moisture; Precipitation (meteorology); Soils; Storms; Temporal variability; Rain; rain; soil water; carbon cycle; ecosystem response; grassland; rainfall; species diversity; article; carbon cycle; ecosystem; grassland; plant; priority journal; seasonal variation; soil moisture; species diversity; Biomass; Carbon; Carbon Dioxide; Ecosystem; Kansas; Photosynthesis; Plants; Poaceae; Rain; Seasons; Soil; Water; Poaceae
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244366
作者单位	Division of Biology, Kansas State University, Manhattan, KS 66506, United States; Ecological Studies Program, National Science Foundation, Arlington, VA 22230, United States; Natl. Ctr. Ecol. Analysis/Synthesis, University of California, Santa Barbara, CA 93101, United States
推荐引用方式 GB/T 7714	Knapp A.K.,Fay P.A.,Blair J.M.,et al. Rainfall variability, carbon cycling, and plant species diversity in a mesic grassland[J],2002,298(5601).
APA	Knapp A.K..,Fay P.A..,Blair J.M..,Collins S.L..,Smith M.D..,...&McCarron J.K..(2002).Rainfall variability, carbon cycling, and plant species diversity in a mesic grassland.Science,298(5601).
MLA	Knapp A.K.,et al."Rainfall variability, carbon cycling, and plant species diversity in a mesic grassland".Science 298.5601(2002).