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1、 二氧化碳浓度升高对森林生态系统碳循环的影响 CO2控制实验研究方法森林生态系统FACE实验简介CO2升高对森林生态系统碳循环的影响对地上部分碳循环的影响对地下部分碳循环的影响研究展望 报告提纲 一 CO2控制实验研究方法 GrowthChambersGreenhousesOpen topChambersTunnelsFACE Free AirCO2Enrichment 1980s 1990s 二 森林生态系统FACE实验简介 Ainsworth Long 2005 NewPhytologist 165 351 372 DukeForestFACEsite Hendreyetal 1999 G
2、lobalChangBiology 5 293 309 DukeForestFACEsite Hendreyetal 1999 GlobalChangBiology 5 293 309 EUROFACE Migliettaetal 2001 NewPhytologist 150 465 476 EUROFACE Migliettaetal 2001 NewPhytologist 150 465 476 OakRidgeExperiment http face ornl gov index html Norbyetal 2001 NewPhytologist150 477 487 Itislar
3、ge CombiningCO2andO3exposures ThetreeswillbeexposedtotheCO2andO3treatmentsthroughouttheexperimentfromsmall 1 year oldplantstomaturetrees TheexperimentcontainsthreetreespeciescommontotheLakeStatesforests tremblingaspen paperbirch sugarmaple TheAspenFACEExperiment http face ornl gov index html TheAspe
4、nFACEExperiment Dicksonetal 2000 TheAspenFACEExperiment TheSwissCanopyCraneProject SCC http pages unibas ch botschoen scc index shtml 三 CO2升高对森林碳循环的影响 Photosynthesis 对森林生态系统光合作用的影响 对森林生态系统光合作用的影响 LiquidambarstyracifluaintheunderstoryatDuke FACE 63 HerrickTheSCC FACE 48 July and 42 September Bader Ko
5、ner 2010 对森林生态系统光合作用的影响 Photosynthesis Acclimation Photosyntheticacclimation down regulation Mooreetal 1999 Tissueetal 1999 Griffinetal 2000 Rogersetal 2004 Bernacchietal 2005 Noacclimationordown regulationofphotosynthesis Nijsetal 1997 Medlynetal 2001 Ainsworthetal 2003b Leakeyetal 2006 Darbah 2007
6、 AinsworthandRogers 2007 Paolettietal 2007 对森林生态系统光合作用的影响 Darbahetal 2010 EnvironmentalPollution 158 983 991 对森林生态系统光合作用的影响 Darbahetal 2010 EnvironmentalPollution 158 983 991 ASEPN FACE 85 55 35 69 and30 NoevidenceofphotosyntheticacclimationundereitherelevatedCO2 对森林生态系统光合作用的影响 Bader Koner 2010 Plan
7、ta 232 1115 1125 SCC FACE Netphotosynthesisofupper canopyfoliagewas48 July and42 September higherinCO2 enrichedtreesandshowednosignofdown regulation NPP的计算 LeafLittertraps StemAllometry DM f BA H density CoarserootAllometry DM f BA FinerootMinirhizotronsandin growthcores UnderstoryHarvest 对森林生态系统NPP
8、的影响 对森林生态系统NPP的影响 Hamiltonetal 2002 Oecologia 131 250 260 Duke FACE 对森林生态系统NPP的影响 Hamiltonetal 2002 Oecologia 131 250 260 Duke FACE 1998 对森林生态系统NPP的影响 Hamiltonetal 2002 Oecologia 131 250 260 Duke FACE 27 1998 对森林生态系统NPP的影响 Norbyetal 2010 PNAS 107 ORNL FACE TheenhancementofNPPdeclinedfrom24 in2001 20
9、03to9 in2008 therewasnosignificantenhancement P 0 18 inanyyearafter2004 Norbyetal 2010 PNAS 107 ORNL FACE 对森林生态系统NPP的影响 a 对森林生态系统NPP的影响 Iversenatal 2005 Norbyetal 2010 PNAS 107 ORNL FACE 对森林生态系统NPP的影响 DecliningNavailabilityconstrainedthetreeresponsetoelevatedCO2 对森林生态系统根系的影响 Haselevated CO2 affected
10、rootbiomassorrootproliferationortheturnoverofthefineroot 对森林生态系统根系的影响 Iversenetal 2008 NewPhytologist 179 837 847 ORNL FACE Biomassproductiondoubledunderelevated CO2 ResponseatdepthtoalleviateNlimitation 对森林生态系统根系的影响 OnaverageinelevatedCO2 fine rootbiomassinthetop15cmofsoilincreasedby24 Jacksonetal
11、2009 Ecology 90 12 3352 3366 Duke FACE 对森林生态系统根系的影响 Pregitzeretal 2008 NewPhytologist 180 153 161 Aspen FACE 2005 Elevated CO2 significantlyincreasedbiomass Baderetal 2009 FunctionalEcology SCC FACE 对森林生态系统根系的影响 Iversen 2010 NewPhytologist ORNL FACE 对森林生态系统根系的影响 Potentialcausesofdeeperrootingdistrib
12、utionsunderelevated CO2 Increasedresourcedemandbytrees Greatercarbonavailableforallocationbelowground Increasedcompetitionforscarceresourcesinshallowersoilfrommicrobesorotherroots 对森林生态系统根系的影响 Turnoverdeclinedslightlyunderelevated CO2 Rootslivinglonger Iversenetal 2008 NewPhytologist 179 837 847 ORN
13、L FACE 对森林生态系统土壤呼吸的影响 Howelevated CO2 affectssoilrespiration 对森林生态系统土壤呼吸的影响 Bernhardtetal 2006 Biogeochemistry 77 91 116 DukeFACE 对森林生态系统土壤呼吸的影响 Soilrespirationwassignificantlyhigherby23 onaverageasassessedbyinstantaneousinfraredgasanalysis Jacksonetal 2009 Ecology 90 12 3352 3366 Duke FACE Pregitze
14、retal 2008 NewPhytologist 180 153 161 AspenFACE 2005 2006 2007 Seasonalsoilrespirationfor2005 2006and2007wassignificantlygreaterunderelevated CO2 对森林生态系统土壤呼吸的影响 Dukeforest AspenFACE Kingetal 2004 GlobalChangeBiology 10 1027 1042 对森林生态系统土壤呼吸的影响 Bader Korner 2010 GlobalChangeBiology 16 2830 2843 SCC F
15、ACE Duringwetperiods soilwatersavingsunderCO2 enrichedtreesledtoexcessiveVWC 45 thatsuppressedRs AtmosphericCO2enrichmentincreasedCstocksintheforestsoilatanaveragerateof44 9gCm 2yr 1 0 5cm 0 15cm Jastrowetal 2005 GlobalChangeBiology 11 2057 2064 OakRidgeFACE 对森林生态系统土壤碳库的影响 对森林生态系统土壤碳库的影响 Lichteretal
16、 2008 GlobalChangeBiology 14 1 13 Duke FACE Lichteretal 2008 GlobalChangeBiology 14 1 13 Duke FACE TheincrementalaccumulationoforganicmatterintheforestfloorunderelevatedatmosphericCO2representsadynamicCsinkof271gCm2over9yearsor30gCm2yr 1 对森林生态系统土壤碳库的影响 Conclusion 研究展望 Remainingchallenges 研究展望 Calfapietraetal 2009 TrendsinPlantScience Vol 15No 1 研究展望 Howaboutupscale 研究展望 Howaboutnaturalforests Plantation Naturalforest 研究展望 Howabouttropicalandborealforest Tropicalforest Borealforest 研究展望 Asignific
