生态化学计量学:复杂生命系统奥秘的探索

曾德慧, 陈广生

ECOLOGICAL STOICHIOMETRY: A SCIENCE TO EXPLORE THE COMPLEXITY OF LIVING SYSTEMS

ZENG De-Hui, CHEN Guang-Sheng

表1 人类活动对C、N、P全球生物地球化学循环的影响(Falkowski et al., 2000)

Table 1 Examples of human intervention in global biogeochemical cycles of C, N, P (Falkowski et al., 2000)

元素 Element 产生来源 Sources of flux 产生大小 Magnitude of flux (109 kg·a-1) 人类的影响 The change due to human activities (%) 自然 Natural 人类 Anthropogenic C 陆地生物呼吸和分解Terrestrial respiration and decay CO2 61 000 8 000 +13 化石燃料燃烧和土地利用改变Fossil fuel and land use CO2 N 自然界生物固氮Natural biological fixation 130 140 +108 农作物、化石燃料燃烧和施肥Fixation owing to rice cultivation, combustion of fossil fuels, and production of fertilizer P 风化Chemical weathering 3 12 +400 采矿Mining