Biomass of forest stands under climatic change: a German case study with the Frankfurt biosphere model (FBM)

IF 2.3 4区地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES

Tellus Series B-Chemical and Physical Meteorology Pub Date : 1999-04-01 DOI:10.3402/TELLUSB.V51I2.16309

C. Häger, G. Würth, G. Kohlmaier

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引用次数: 3

Abstract

In this contribution, we perform a case study of the German forests. We couple the Frankfurt biosphere model (FBM) with a model of the age class development (AGEDYN). The coupled model is applied to simulate the temporal development of carbon pools in German forests under the influence of climate change taking into account changes in the age class structure. In the base case, the growth of forest stands is simulated using a temporally averaged climate dataset, being representative for the contemporary climate conditions. To assess the sensitivity of forest growth to changes in environmental conditions, the FBM is run in several scenarios. In these simulations the effects both of climate change and of the direct effect of increased levels of atmospheric CO 2 on photosynthesis (CO 2 fertilization) on forest growth are assessed. In another simulation run with the FBM both effects — climate change and CO 2 fertilization — are combined. In simulations under present day's climate conditions a good agreement is gained between simulation results and statistical data of the present standing stock carbon density of Germany's forests. A pure climate change leads to a decrease of the annual increments as well as to the climax standing stocks. The negative effect of climate change alone is overcompensated by enhanced photosynthesis in the simulations with combined climate change and CO 2 fertilization. In the transient case, the coupled model is used in two scenarios describing first a continuation of present day's climate conditions and second a transient climate change from present conditions (1990) to 2 × CO 2 conditions in 2090. Here, the simulations indicate that changes in the forest's age class structure can have a stronger influence on the future carbon balance of the forests in the considered region than the combined efffect of climate change and CO 2 fertilization. DOI: 10.1034/j.1600-0889.1999.00019.x

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气候变化下的林分生物量:基于法兰克福生物圈模型的德国案例研究

在这篇文章中，我们对德国森林进行了一个案例研究。我们将法兰克福生物圈模型(FBM)与年龄等级发展模型(AGEDYN)相结合。利用耦合模型模拟了气候变化影响下德国森林碳库的时间发展，并考虑了年龄级结构的变化。在基本情况下，使用代表当代气候条件的时间平均气候数据集模拟林分的生长。为了评估森林生长对环境条件变化的敏感性，在几种情况下运行了FBM。在这些模拟中，评估了气候变化的影响以及大气中二氧化碳含量增加对光合作用(二氧化碳施肥)对森林生长的直接影响。在另一个用FBM运行的模拟中，两种效应——气候变化和二氧化碳施肥——被结合在一起。在当前气候条件下的模拟中，模拟结果与德国森林现有蓄积量碳密度的统计数据吻合较好。单纯的气候变化导致年增长量减少，顶极林分蓄积量减少。在气候变化和CO 2联合施肥的模拟中，单纯气候变化的负面影响被增强的光合作用过度补偿。在瞬态情况下，耦合模式用于两种情景，第一种情景描述当前气候条件的延续，第二种情景描述从当前条件(1990年)到2090年2 × co2条件的瞬态气候变化。模拟结果表明，森林年龄级结构的变化对未来森林碳平衡的影响要大于气候变化和co2施肥的综合影响。DOI: 10.1034 / j.1600-0889.1999.00019.x

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来源期刊

Tellus Series B-Chemical and Physical Meteorology 地学-气象与大气科学

自引率

0.00%

发文量

期刊介绍： Tellus B: Chemical and Physical Meteorology along with its sister journal Tellus A: Dynamic Meteorology and Oceanography, are the international, peer-reviewed journals of the International Meteorological Institute in Stockholm, an independent non-for-profit body integrated into the Department of Meteorology at the Faculty of Sciences of Stockholm University, Sweden. Aiming to promote the exchange of knowledge about meteorology from across a range of scientific sub-disciplines, the two journals serve an international community of researchers, policy makers, managers, media and the general public.