کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4376817 | 1303395 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A new scheme for initializing process-based ecosystem models by scaling soil carbon pools A new scheme for initializing process-based ecosystem models by scaling soil carbon pools](/preview/png/4376817.png)
Process-based ecosystem models are useful tools, not only for understanding the forest carbon cycle, but also for predicting future change. In order to apply a model to simulate a specific time period, model initialization is required. In this study, we propose a new scheme of initialization for forest ecosystem models, which we term a “slow-relaxation scheme”, that entails scaling of the soil carbon and nitrogen pools slowly during the spin-up period. The proposed slow-relation scheme was tested with the CENTURY version 4 ecosystem model. Three different combinations of scaled soil pools were also tested, and compared to the results from a fast-relaxation regime. The fast-relaxation of soil pools produced unstable, transient model behaviour whereas slow-relaxation overcame this instability. This approach holds promise for initializing ecosystem models, and for starting simulations with more realistic initial conditions.
► We propose a new scheme of initialization for ecosystem models.
► The scheme entails the scaling of the soil pools slowly during the spin-up.
► The slow-relaxation scheme was tested with the CENTURY version 4 ecosystem model.
► Slow-relaxation overcame the unstable model behaviour seen using fast-relaxation.
Journal: Ecological Modelling - Volume 222, Issue 19, 10 October 2011, Pages 3598–3602