东北东部森林土壤呼吸空间分布格局的模拟

摘要

IBIS（Integrated Biosphere Simulator）model is an ecosystem process model ,which requires extensive input parameters. In this study, we simulated spatial pattern of soil respiration （Rs）in the eastern part of northeast China by using IBIS. The result showed that it was correlated to regional heterogeneity and climate conditions. When precipitation was less than 465 mm or temperature was less than -3℃, and the ecosystem Rs was limited.%IBIS模型是生态系统过程模型，运行过程需要大量参数设置。本文运用IBIS模拟区域范围内土壤呼吸（Rs）的空间分布情况，结果表明：土壤Rs空间分布随降水量与温度分布呈现区域异质性，降雨量低于465mm或年平均气温低于-3℃，就会成为生态系统呼吸的限制性因子。