为了更好地实现旱地的可持续发展,以河北省为研究对象,采用CENTURY模型模拟的方法,对1990年-2020年河北省旱地土壤有机碳的动态变化进行模拟并分析.结果表明:1)CENTURY模型模拟的土壤有机碳变化和实测值具有很好的一致性.2)30年来土壤有机碳储量和密度均呈上升趋势,1990年SOCS为158.60 Tg,2020年为167.66 Tg,30年中增加了 5.7％,表现出"碳汇"效应.3)SOCD年均增加0.06 Mg C hm-2,增加的区域主要分布在中南部和南部.
Abstract
In order to better realize the sustainable development of dryland,the dynamic changes of soil organic carbon in dryland in Hebei Province from 1990 to 2020 were simulated and analyzed by u-sing the CENTURY model simulation method.The results showed that:1)The changes of soil organic carbon simulated by the CENTURY model were in good agreement with the measured values.2)In the past 30 years,the SOCS was 158.60 Tg in 1990 and 167.66 Tg in 2020,an increase of 5.7％in 30 years,showing a"carbon sink"effect.3)The average annual increase of SOCD was 0.06 Mg C hm-2,and the increase was mainly distributed in the south-central and southern regions.
关键词
旱地/土壤有机碳/CENTURY模型/河北省
Key words
dryland/soil organic carbon/CENTURY model/Hebei Province
维普
万方数据