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Position: Home > Articles > A simulation of Change for Soil Organic Carbon in Croplands in Liaoning Province Chinese Journal of Soil Science 2014,45 (1) 105-109

辽宁省农田土壤有机碳变化的模拟研究

作  者:
刘慧屿;李双异;汪景宽
单  位:
沈阳农业大学土地与环境学院
关键词:
CENTURY模型;农田;有机碳
摘  要:
农田土壤长期受到人类干预,与自然土壤相比,其与大气之间的碳交换强度更大。以辽宁省农田生态系统为研究对象,采用生态系统碳循环模型-CENTURY模型模拟辽宁省农田耕层土壤有机碳(0~20 cm)在1951~2005年的动态变化,并以2005年大量样点的分析结果为基础,估算有机碳储量。研究表明:全省2005年农田耕层土壤有机碳密度平均为2.66kg m-2,其中辽东山区>辽中南平原区>辽西低山丘陵区,全省农田耕层土壤碳储量为112.15 Tg;CENTURY模型模拟的农田土壤有机碳与实测值有较好的一致性。
译  名:
A simulation of Change for Soil Organic Carbon in Croplands in Liaoning Province
作  者:
LIU Hui-yu;LI Shuang-yi;WANG Jing-kuan;College of Land and Environmental Science, Shenyang Agricultural University;
关键词:
Century model;;Cropland;;Organic carbon
摘  要:
Cropland, as a kind of special soil, is significantly disturbed by human activity compared with natural soil, which a large consequential carbon stock is released to atmosphere. The CENTURY model was used to simulate variations of soil organic carbon(SOC) density in croplands in Liaoning Province for the period from 1951 to 2005. The SOC sequestration was estimated based on the analysis results of large sampling points in 2005. The results showed that the model successfully simulated the dynamics of soil SOC at the soil depth of 0- 20 cm and the simulated results are fitting well to the measurements. The average SOC density was 2.66 kg m-2and the estimates of SOC sequestration was 112.15 Tg in cultivated layer in 2005.

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