全球二氧化碳循环的一维模式研究

One-Dimensional Analysis of Global Carbon Cycle

本文用一个全球碳循环的一维模式重建了１８６０年以来的大气二氧化碳浓度。结果表明：（１）模拟结果与冒纳罗亚（ＭａｕｎａＬｏａ）的观测结果之间存在极好的一致性；（２）海洋虽然是人类活动释放的ＣＯ２的最重要的汇，但其作为碳汇的能力受到海洋缓冲效应的限制。海洋吸收ＣＯ２的速率还与某些响应过程密切相关；（３）在全球碳循环中，生态系统的作用是双重的：人类活动对它的破坏使它成为ＣＯ２的源，而其对过量ＣＯ２的响应又使其成为ＣＯ２的一个汇。工业革命以来，人类对生态系统的破坏与其自身的恢复大致是同量级的；

The time-dependent atmospheric CO 2 concentrations since 1860 are rebuilt with a one dimensional model of global carbon cycle. The results show that: (1) an excellent agreement exists between the observations in Mauna Loa and the model simulations; (2) the cean is the most important sink of anthropogenic CO 2 , but its ability ad a carbon sink is limited by the buffer effect. The uptake rate of CO 2 by the ocean also relates closely to certain courses of the response; (3) the cosystem acts as a dual role in the global carbon cycle. It is a source because of human being impacts and, at the same time, a sink due to its response to the excess atmospheric CO 2 . Since the industrial era, destruction of the ecosystem byhuman activities and recovery by itself has been of same order of magnitude; and (4) the terrestrial biosphere shortens the response time of the whole carbon cycle system to the anthropogenic perturbations.