A。CO2关键科学问题3:典型海域垂直碳 通量的头键过程和传输机理 CO2=>浮游植物 浮游动溶解无机碳 物理混合 颗粒有机碳 水平混合 溶解有机碳 沉积物再悬浮 溶解碳 底栖生物活动 沉积物有机碳 成岩作用
CO2 CO2 浮游植物 浮游动物 颗粒有机碳 沉积物有机碳 成岩作用 溶解有机碳 溶解无机碳 关键科学问题3：典型海域垂直碳 通量的关键过程和传输机理 沉积物再悬浮 水平混合 溶解碳 底栖生物活动 物理混合
HUMAN POPULATION CO? 温度升高 BC A EAR AD NITROGEN CLIMATE 备 Natural N fixaton 100 Anthropogenic N Fixi Trends YEAR YEAR9401960 LAND CO SPECIES EXTINCTIONS mal spec YEAR YEARS re 13. /hnis figure shows some conponent ofglobal clmange: (ar)increase in Auman population:(b)increase in usek(1991): Houghten et al. (1995: Klein Goldeuijk and Berties(1995); and Reid and Miller(1989). csee (C e lead)permiion from the International Geas/ere- Biosphere Programme(IGBP):@/GBP
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系研 过去140年间全球温度的距平变化 (按1961-1990年的平均) Dapartras h temperatur hc um th tas1-1250 awen the past 140 years(global) 00 t860 190 19 2000 Departures in temperature in C from the 1961-1990 average
Chinese Ecosystem Research Network Departures in temperature in ºC from the 1961-1990 average 过去140年间全球温度的距平变化 (按1961-1990年的平均)
各种模型对未来气温变化的预测 6.5 -Globe b6.0 品巴E5号 4332 5050505 15 several 巴s留与 ==A1 o50 1000 1200 1400 1600 2000 Yea
各种模型对未来气温变化的预测
Chinese Ecosystem Research Network Arctic Sea Ice will disappear by 2080 Hadley Centre for Climate Change NOvember 2000 Present day 20805 Snow cover and ice extent have decreased 0.150.30450.60.750.9 Northern Hemisphere spring and summer sea-ice extent h Fraction of ocean covered by sea ice decreased by about 10 to 15% since the 1950s. It is likely limate model estimates of Sepember Nothern hemisphe sea-ice coverage (fractional)at present day and at the end of that there has been about a 40% decline in Arctic sea-ice the 2/1t century for A IFl emisions scenario. The altering of ice thickness during late summer to early autumn in recent ound the Noth Pole in the future prediction may be an decades and a considerably slower decline in winter sea-io artifact of the model thickness The Met office
Chinese Ecosystem Research Network Arctic Sea Ice will disappear by 2080 Hadley Centre for Climate Change November 2000