Adams , R. M. , Hamilton , S. A. and McCarl , B. A . 1986 . The benefits of pollution control: the case of ozone and U.S . Agriculture. Amer J. Agr Econ . 68 , 886 – 893 .
Beyers , J. L. , Riechers , G. H. and Temple , P. J . 1992 . Effects of long-term ozone exposure and drought on the photosynthetic capacity of ponderosa pine (Pinus ponderosa Laws .). New Phytol . 122 , 81 – 90 .
Birdsey , R. A. and Heath , L. S . 1995 . Carbon changes in U.S. forests. Productivity of America's Forests and Climate Change. L. A. Joyce, Ed. USDA Forest Service, Fort Collins, CO . RM-GTR- 271 , 56 – 70 .
Cao , M. and Woodward , F. I . 1998 . Dynamic responses of terrestrial ecosystem carbon cycling to global climate change . Nature 393 , 249 – 252 .
Clark , C. E . 1961 . Importance sampling in Monte Carlo analyses . Op-erational Research , September-October , 603 – 620 .
Constable , J. V. H. and Friend , A. L . 2000 . Suitability of process-based tree growth models for addressing tree response to climate change . Environ. Pollut . 110 , 47 – 59 .
Esser , G . 1995 . Contribution of monsoon Asia to the carbon budget of the biosphere, past and future . Vegetatio 121 , 175 – 188 .
Etheridge , D. M. , Steele , L. P. , Langenfelds , R. L. , Francey , R. J. , Barnola , J. M. and Morgan , V. I . 1996 . Natural and anthropogenic changes in atmospheric CO2 over the last 1000 years from air in Antarctic ice and firn . J. Geophys. Res . 101 , 4115 – 4128 .
Fiore , A. M. , Jacob , D. J. , Logan , J. A. and Yin , J. H . 1998 . Long-term trends in ground level ozone over the contiguous United States, 1980-1995 . J. Geophys. Res . 103 ( D1 ), 1471 – 1480 .
Fuhrer , J. , Slcarby , L. and Ashmore , M. R . 1997 . Critical levels for ozone effects on vegeation in europe . Environ. Pollut . 97 ( 1-2 ), 91 – 106 .
Heck , W. W. , Cure , W. W. , Rawlings , J. O. , Zaragoza , L. J. , Heagle , A. S. , Heggestad , H. E. , Kohut , R. J. , Kress , L. W. and Temple , P. J . 1984 . Assessing impacts of ozone on agricultural crops: I . overview. J. Air Pollut. Control Assoc . 34 , 729 – 735 .
Heck , W. W. , Cure , W. W. , Rawlings , J. O. , Zaragoza , L. J. , Heagle , A. S. , Heggestad , H. E. , Kohut , R. J. , Kress , L. W. and Temple , P. J . 1984 . Assessing impacts of ozone on agricultural crops: II. crop yield functions and alternative exposure statistics . J. Air Pollut. Control Assoc . 34 , 810 – 817 .
Houghton , R. A. , Hackler , J. L. and Lawrence , K. T . 1999 . The U.S. car-bon budget: Contributions from land-use change . Science 285 ( 5427 ), 574 – 578 .
Houghton , R. A. , Hobbie , J. E. , Melillo , J. M. , Moore , B. , Peterson , B. J. , Shaver , G. R. and Woodwell , G. M . 1983 . Changes in the carbon content of terrestrial biota and soils between 1860 and 1980: a net release of CO2 to the atmosphere . Ecological Monographs 53 ( 3 ), 235 – 262 .
Hulme , M . (1995). A historical monthly precipitation data for global land areas from 1900 to 1994, gridded at 3.75 x 2.5 resolution. Norwich, UK, Climate Research Unit, University of East Anglia.
Isebrands , J. G. , McDonald , E. P. , Kruger , E. , Hendrey , G. , Percy , K. , Pregitzer , K. , Sober , J. and Karnosky , D. E 2001 . Growth responses of Populus tremuloides clones to interacting elevated carbon dioxide and tropospheric ozone . Environ. Pollut . 115 , 359 – 371 .
Jones , P. D . 1994 . Hemispheric surface air temperature variations: a reanalysis and update to 1993 . Journal of Climate 7 , 1794 – 1802 .
Keeling , C. D. , Whorf , T. R , Wahlen , M. and Pilcht , M . 1995 . Interannual extremes in the rate of rise of atmospheric carbon dioxide since 1980 . Nature 375 , 666 – 670 .
Korner , C. , Scheel , J. A. and Bauer , H . 1979 . Maximum leaf diffusive conductance in vascular plants . Photosynthetica 13 ( 1 ), 45 – 82 .
Krupa , S. V. and Manning , W. J . 1988 . Atmospheric ozone: formation and effects on vegetation . Environ. Pollut . 50 , 101 – 137 .
Laurence , J. A. , Retzlaff , W. A. , Kern , J. S. , Lee , E. H. , Hogsett , W. E. and Weinstein , D. A . 2001 . Predicting the regional impact of ozone and precipitation on the growth of loblolly pine and yellow-poplar using linked TREGRO and ZELIG models . Forest Ecology and Management 146 , 247 – 263 .
Lefohn , A. S. , Laurence , J. A. and Kohut , R. J . 1988 . A comparison of indices that describe the relationship between exposure to ozone and reduction in the yield of agricultural crops . Atmos. Environ . 22 ( 6 ), 1229 – 1240 .
Lefohn , A. S. , Oltmans , S. J. , Dann , T. and Singh , H. B . 2001 . Present-day variability of background ozone in the lower troposphere . J. Geophys. Res . 106 ( D9 ), 9945 – 9958 .
Lefohn , A. S. and Runeckles , V. C . 1987 . Establishing standards to protect vegetation-ozone exposure/dose considerations . Atmos. Environ . 21 , 561 – 568 .
Lefohn , A. S. and Shadwick , D. S . 1991 . Ozone, sulfur dioxide, and nitrogen dioxide trends at rural sites located in the United States . Atmos. Environ . 25 , 491 – 501 .
Lin , C. Y. C. , Jacob , D. J. and Fiore , A. M . 2001 . Trends in exceedances of the ozone air quality standard in the continental United States, 1980-1998 . Atmos. Environ . 35 , 3217 – 3228 .
Lin , X. , Trainer , M. and Liu , S. C . 1988 . On the nonlinearity of the tropospheric ozone production . J. Geophys. Res . 93(D12), 15 , 879-15 , 888 .
Lindroth , R. L. , Kopper , B. J. , Parsons , W. F. J. , Bocicheim , J. G. , Karnosky , D. F. , Hendrey , G. R. , Pregitzer , K. S. , Isebrands , J. G. and Sober , J . 2001 . Consequences of elevated carbon dioxide and ozone for foliar chemical composition and dynamics in trembling aspent (Populus tremuloides) and paper birch (Betual papyrifera) . Environ. Pollut . 115 , 395 – 404 .
Liu , S. C. , Trainer , M. , Fehsenfeld , F. C. , Parrish , D. D. , Williams , E. J. , Fahey , D. W. , Hubler , G. and Murphy , P. C . 1987 . Ozone production in the rural troposphere and the implications for regional and global ozone distributions . J. Geophys. Res . 92 ( D4 ), 4191 – 4207 .
Logan , J. A . 1989 . Ozone in rural areas of the United States . J. Geophys. Res . 94 ( D6 ), 8511 – 8532 .
Lyons , T. M. , Barnes , J. D. and Davison , A. W . 1997 . Relationships be-tween ozone resistance and climate in European populations of Plan-tago major . New Phytol . 136 , 503 – 510 .
Marenco , A. , Gouget , H. , Nedelec , P. and Pages , J . 1994 . Evidence of a long-term increase in tropospheric ozone from Pic du Midi data series: consequences: positive radiative forcing . J. Geophys. Res . 99 ( D8 ), 16617 – 16632 .
Martin , M. J. , Host , G. E. , Lenz , K. E. and Isebrands , J. G . 2001 . Simu-lating the growth response of aspen to elevated ozone: a mechanistic approach to scaling a leaf-level model of ozone effects on photosynthesis to a complex canopy architecture . Environ. Pollut . 115 , 425 – 436 .
Mauzerall , D. L. and Wang , X . 2001 . Protecting agricultural crops from the effects of tropospheric ozone exposure: reconciling science and standard setting in the United States, Europe, and Asia . Annu. Rev. Energy Enivron . 26 , 237 – 268 .
McGuire , A. D. , Melillo , J. M. , Joyce , L. A. , Kicklighter , D. W. , Grace , A. L. , Moore DI , B. and Vorosmarty, C. J. 1992. Interactions between carbon and nitrogen dynamics in estimating net primary productivity for potential vegetation in North America. Glob. Biogeochem. Cyc. 6 ( 2 ), 101 – 124.
McGuire , A. D. , Sitch , S. , Clein , J. S. , Dargaville , R. , Esser , G. , Fo-ley , J. , Heimann , M. , Joos , E , Kaplan , J. , Kicklighter , D. W. , Meier , R. A. , Melillo , J. M. , Moore DI , B. , Prentice , I. C. , Ramankutty , N. , Reichenau , T. , Schloss , A. , Tian , H. , Williams , L. J. and Wittenberg , U. 2001. Carbon balance of the terrestrial biosphere in the twenti-eth century: analyses of CO2, climate and land use effects with four process-based ecosystem models. Glob. Biogeochem. Cyc 15 ( 1 ), 183 – 206.
McLaughlin , S. B. and Downing , D. J . 1995 . Interactive effects of am-bient ozone and climate measured on growth of mature forest trees . Nature 374 , 252 – 254 .
Melillo , J. M. , Fruci , J. R. and Houghton , R. A . 1988 . Land-use change in the Soviet Union between 1850 and 1980: causes of a net release of CO2 to the atmosphere . Tellus 40B , 116 – 128 .
Morgan , G. M. and Henrion , M . 1992 . Uncertainty, a Guide to Dealing with Uncertainty in Quantitative Risk and Policy Analysis . Cambridge University Press. Cambridge , UK . 198 – 219 .
Noormets , A. , Sober , A. , Pell , E. J. , Dickson , R. E. , Podila , G. K. , Sober , J. , Isebrands , J. G. and Karnosky , D. F . 2001 . Stomatal and non-stomatal limitation to photosynthesis in two trembling aspen (Populus tremuloides Michx.) clones exposed to elevated CO2 and/or 03 . Plant, Cell and Environment 24 , 327 – 336 .
Ollinger , S. V. , Aber , J. D. and Reich , P. B . 1997 . Simulating ozone effects on forest productivity: interactions among leaf-, canopy-, and stand-level processes . EcoL Appl . 7 ( 4 ), 1237 – 1251 .
Ollinger , S. V , Aber , J. D. , Reich , P. B. and Freuder , R. J . 2002 . In-teractive effects of nitrogen deposition, tropospheric ozone, elevated CO2and land use history on the carbon dynamics of northern hard-wood forests . Glob. Change Biol . 8 ( 6 ), 545 – 562 .
Oltmans , S. J. and Levy II , H. 1994 . Surface ozone measurements from a global network . Atmos. Environ . 28 ( 1 ), 9 – 24 .
Pacala , S. W. , Hurtt , G. C. , Baker , D. , Peylin , R , Houghton , R. A. , Bird-sey , A. , Heath , L. , Sundquist , E. T. , Stallard , R. F. , Ciais , P. , Moorcroft , P. , Capersen , J. R , Shevliakova , E. , Moore , B. , Kohlmaier , G. , Hol-land , E. , Gloor , M. , Harmon , M. E. , Fan , S. M. , Sarmiento , J. L. , Goodale , C. L. , Schimel , D. and Field , C. B . 2001 . Consistent land-and atmosphere-based U.S. carbon sink estimates . Science 292 , 2316 – 2320 .
Pan , Y. , McGuire , D. , Kicklighter , D. W. and Melillo , J. M . 1996 . The importance of climate and soils for estimates of net primary produc-tion: a sensitivity analysis with the terrestrial ecosystem model . Glob. Change Biol . 2 , 5 – 23 .
Pan , Y. , Melillo , J. M. , McGuire , A. D. , Kicklighter , D. W. , Pitellca , L. E , Hibbard , K. , Pierce , L. L. , Running , S. W. , Ojima , D. S. , Parton , W. J. , Schimel , D. S. and members , O. V. 1998 . Modeled responses of ter-restrial ecosystems to elevated atmospheric CO2: a comparison of simulations by the biogeochemistry models of the Vegetation/ Ecosystem Modeling and Analysis Project (VEMAP) . Oecologia 114 , 389 – 404 .
Pell , E. J. , Sinn , J. P. , Eckardt , H. , Vinten Johansen , C. , Winner , W. E. , and Mooney , H. A . 1993 . Response of radish to multiple stresses IL influence of season and genotype on plant response to ozone and soil moisture deficit . New Phytol . 123 , 153 – 163 .
Pell , E. J. , Winner , W. E. , Vinten Johansen , C. and Mooney , H. A . 1990 . Response of radish to multiple stresses I. physiological and growth responses to changes in ozone and nitrogen . New Phytol . 115 , 439 – 446 .
Pye , J. M . 1988 . Impact of ozone on the growth and yield of tress: a review . Journal of Environmental Quality 17 ( 3 ), 347 – 360 .
Raich , J. W. , Rastetter , E. B. , Melillo , J. M. , Kicklighter , D. W. , Steudler , P. A. , Peterson , B. J. , Grace , A. L. , Moore DI , B. and Vorosmarty, C. J. 1991. Potential net primary productivity in South America: application of a global model. EcoL Appl. 1 ( 4 ), 399 – 429.
Reich , P. B . 1987 . Quantifying plant response to ozone: a unifying theory . Tree Physiol . 3 , 63 – 91 .
Schimel , D. , Melillo , J. M. , Tian , H. , McGuire , A. D. , Kicklighter , D. W. , Kittel , T. , Rosenbloom , N. , Running , S. , Thornton , P. , Ojima , D. , Par-ton , W. , Kelly , R. , Sykes , M. , Neilson , R. and Rizzo , B . 2000 . Contri-bution of increasing CO2 and climate to carbon storage by ecosystems in the United States . Science 287 , 2004 – 2006 .
Seinfeld , J. H . 1989 . Urban air pollution: state of the science . Science 243 , 745 – 752 .
Singh , H. B. , Ludwig , E L. and Johnson , W. B . 1978 . Tropospheric ozone: concentrations and variabilities in clea remote atmospheres . Atmos. Environ . 12 , 2185 – 2196 .
Taylor , J. , G. E. and Johnson, D. W. 1994. Air pollution and forest ecosystems: a regional to global perspective. EcoL Appl. 4 ( 4 ), 662 – 689.
Tian , H. , Melillo , J. M. , Kicklighter , D. W. , McGuire , A. D. and Hel-frich , J . 1999 . The sensitivity of terrestrial carbon storage to historical climate variability and atmospheric CO2 in the United States . Tellus 51B , 414 – 452 .
Tian , H. , Melillo , J. M. , Kicklighter , D. W. , Pan , S. , Liu , J. , McGuire , A. D. and Moore DI , B. 2003 . Regional carbon dynamics in monsoon Asia and its implications for the global carbon cycle . Glob. Planet. Change 777 , 1 – 17 .
Tjoekler , M. G. , Volin , J. C. , Oleksyn , J. and Reich , P. B . 1995 . Interac-tion of ozone pollution and light effects on photosynthesis in a forest canopy experiment . Plant, Cell and Environment 18 , 895 – 905 .
Townsend , A. R. , Braswell , B. H. , Holland , E. A. and Penner , J. E . 1996 . Spatial and temporal patterns of carbon storage due to deposition of fossil fuel nitrogen . EcoL Appl . 6 , 806 – 814 .
USDA . 1997. Natural Resources Inventory. Natural Resources Conser-vation Service. Washington D. C.
Wang , Y. and Jacob , D. J . 1998 . Anthropogenic forcing on tropospheric ozone and OH since preindustrial times . J. Geophys. Res . 103 , 31 , 123-31 , 135 .
Yun , S. C. , Park , E. W. and Laurence , J. A . 2001 . Simulation of 1-year-old Populus tremuloides response to ozone stress at Ithaca, USA, and Suwon, Republic of Korea . Environ. Pollut . 112 , 253 – 260 .
Zheng , Y. , Stevenson , K. J. , Barrowcliffe , R. , Chen , S. , Wang , H. and Barnes , J. D . 1998 . Ozone levels in Chongqing: a potential threat to crop plants commonly grown in the region? Enivonmental Pollution 99 , 299 – 308 .