Arid
DOI10.1890/1051-0761(2000)010[0470:BCOVCA]2.0.CO;2
Belowground consequences of vegetation change and their treatment in models
Jackson, RB; Schenk, HJ; Jobbagy, EG; Canadell, J; Colello, GD; Dickinson, RE; Field, CB; Friedlingstein, P; Heimann, M; Hibbard, K; Kicklighter, DW; Kleidon, A; Neilson, RP; Parton, WJ; Sala, OE; Sykes, MT
通讯作者Jackson, RB
来源期刊ECOLOGICAL APPLICATIONS
ISSN1051-0761
出版年2000
卷号10期号:2页码:470-483
英文摘要

The extent and consequences of global land-cover and land-use change are increasingly apparent. One consequence not so apparent is the altered structure of plants belowground. This paper examines such belowground changes, emphasizing the interaction of altered root distributions with other factors and their treatment in models. Shifts of woody and herbaceous vegetation with deforestation, afforestation, and woody plant encroachment typically alter the depth and distribution of plant rests, influencing soil nutrients, the water balance, and net primary productivity (NPP). For example, our analysis of global soil data sets shows that the major plant nutrients C, N, P, and K are more shallowly distributed than are Ca, Mg, and Na, but patterns for each element vary with the dominant vegetation type. After controlling for climate, soil C and N are distributed more deeply in arid shrublands than in arid grasslands, and subhumid forests have shallower nutrient distributions than do subhumid grasslands. Consequently, changes in vegetation may influence the distribution of soil carbon and nutrients over time (perhaps decades to centuries). Shifts in the water balance are typically much more rapid. Catchment studies indicate that the water yield decreases 25-40 mm for each 10% increase in tree cover, and increases in transpiration of water taken up by deep roots may account for as much as 50% of observed responses. Because models are increasingly important for predicting the consequences of vegetation change, we discuss the treatment of belowground processes and how different treatments affect model outputs. Whether models are parameterized by biome or plant life form (or neither), use single or multiple soil layers, or include N and water limitation will all affect predicted outcomes. Acknowledging and understanding such differences should help constrain predictions of vegetation change.


英文关键词belowground processes and global change biogeochemistry ecosystem models global change plant life forms roots shrub encroachment soil carbon and nutrients water balance
类型Review
语种英语
国家USA ; Australia ; Germany ; Argentina ; Sweden
收录类别SCI-E
WOS记录号WOS:000086008300013
WOS关键词MURRAY-DARLING BASIN ; TERRESTRIAL BIOSPHERE MODEL ; SOIL-WATER DYNAMICS ; ECOHYDROLOGICAL CHANGES ; ROOT DISTRIBUTIONS ; EXPERIMENTAL CATCHMENTS ; ECOSYSTEM PRODUCTION ; EUCALYPTUS-GRANDIS ; SATELLITE DATA ; GLOBAL WATER
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构University of Arizona ; Commonwealth Scientific and Industrial Research Organisation ; Colorado State University ; E18
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/138843
作者单位(1)Duke Univ, Dept Bot, Durham, NC 27708 USA;(2)Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA;(3)Natl Ctr Ecol Anal & Synth, Santa Barbara, CA 93101 USA;(4)CSIRO, Div Wildlife & Ecol, Lyneham, ACT 2602, Australia;(5)Carnegie Inst Washington, Dept Plant Biol, Stanford, CA 94305 USA;(6)Univ Arizona, Inst Atmospher Phys, Tucson, AZ 85721 USA;(7)NASA, Goddard Inst Space Studies, New York, NY 10025 USA;(8)Max Planck Inst Meteorol, D-20146 Hamburg, Germany;(9)Univ New Hampshire, Climate Change Res Ctr, GAIM Task Force, Durham, NH 03824 USA;(10)Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA;(11)US Forest Serv, USDA, Corvallis, OR 97331 USA;(12)Colorado State Univ, Dept Rangeland Ecosyst Sci, Ft Collins, CO 80523 USA;(13)Univ Buenos Aires, Fac Agron, Dept Ecol, RA-1417 Buenos Aires, DF, Argentina;(14)Univ Lund, Global Syst Grp, S-22362 Lund, Sweden
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GB/T 7714
Jackson, RB,Schenk, HJ,Jobbagy, EG,et al. Belowground consequences of vegetation change and their treatment in models[J]. University of Arizona, Commonwealth Scientific and Industrial Research Organisation, Colorado State University, E18,2000,10(2):470-483.
APA Jackson, RB.,Schenk, HJ.,Jobbagy, EG.,Canadell, J.,Colello, GD.,...&Sykes, MT.(2000).Belowground consequences of vegetation change and their treatment in models.ECOLOGICAL APPLICATIONS,10(2),470-483.
MLA Jackson, RB,et al."Belowground consequences of vegetation change and their treatment in models".ECOLOGICAL APPLICATIONS 10.2(2000):470-483.
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