RothC模型模拟华北潮土区的土壤有机碳动态  

RothC model simulation of soil organic carbon dynamics of fluvo-aquic soil in Northern China

作　　者：王金州[1] 卢昌艾[1] 张金涛[1] 单鹤翔[1] 张文菊[1] 黄绍敏[2] 徐明岗[1] 

机构地区：[1]中国农业科学院农业资源与农业区划研究所,农业部作物营养与施肥重点开放实验室,北京100081 [2]河南省农业科学院植物营养与资源环境研究所,河南郑州450002

出　　处：《中国土壤与肥料》2010年第6期16-21,49,共7页Soil and Fertilizer Sciences in China

基　　金：国家“973”项目(2007CB109308);支撑计划项目(2006BAD25B04);北京市基金项目(6102023)

摘　　要：运用RothC(Version 26.3)模型,模拟研究华北地区典型潮土长期定位施肥试验小麦-玉米轮作下土壤有机碳(SOC)含量的变化。本研究选取潮土区较为常见的6个典型施肥处理:不施肥(CK)、单施氮肥(N)、氮磷配施(NP)、氮磷钾配施(NPK)、氮磷钾配施有机肥(NPKM)和氮磷钾配施秸秆(NPKS),对耕层土壤SOC的模拟值与实际测定值进行了比较。除NPKS处理外,其余各处理模型模拟值与实测值之间吻合较好。将NPKS处理植物碳DPM/RPM由1.44调至3.35后,模拟效果明显改善。RothC模型可用来模拟和预测不同施肥措施下潮土SOC变化趋势,但在大量秸秆还田时需调整部分模型参数。The RothC model（Version 26.3）was used to simulate the dynamics of soil organic carbon（SOC）under the wheat-maize cropping system in a long-term fertilization experiment in the Northern China Plain.Six typical fertilizer treatments（CK、N、NP、NPK、NPKM-NPK＋ manure、NPKS-NPK＋ maize straw）were chosen to simulate the SOC dynamics of the topsoil（0～20 cm）.Model simulation agreed well with the measurements except the NPKS treatment.The simulation efficiency of the NPKS treatment improved when we modified the DPM/RPM ratio of plant carbon from 1.44 to 3.35.So we concluded that the RothC model was feasible to predict the SOC dynamics of fluvo-aquic soil under different fertilizer management practices in the Northern China Plain,but some model parameters should be modified when a great amount of straw carbon input into the soil.

关 键 词：RothC模型 潮土 土壤有机碳 模型模拟 

分 类 号：S153.62[农业科学—土壤学]