贡嘎山冷杉林土壤CO_2释放的模拟研究
鲁旭阳; 范继辉; 程根伟
刊名浙江林业科技
2009-11-15
卷号29期号:6页码:11-16
关键词CO2通量 Forest-DNDC 模型校准 冷杉
其他题名Simulation of CO_2 Emission from Soil of Abies fabri Forest at Gongga Mountian
通讯作者程根伟
合作状况其它
中文摘要利用贡嘎山冷杉林1998年和1999年土壤CO2通量对生物地球化学循环模型Forest-DNDC进行校准和验证,通过调整温度和湿度对 土壤根呼吸影响的计算公式和对模型参数的本土化,提高了模拟值与真实值之间的吻合程度,尤其是提高了冬季土壤CO2释放模拟的准确性。校准 后使土壤CO2日释放量模拟结果的平均误差(e)和相对平均误差(e′)分别下降了3.81 kg/hm2和13.49%,绝对平均误差(M)和相对绝对平均误差(M ′)也同时降低;模型效率的Nash-Sutcliffe系数(Me)和冷模拟(利用默认参数)相比,也由0.651提高到0.683。模型验证结果表明,冷杉林土壤CO2释放通量模拟值大体上能够与实际观测值的季节变化和日变化保持一致,在释放的量上也与实际观测值相当。
英文摘要Calibration and validation for Forest-DNDC was carried out by the fluxes of soil CO2 emission determined in 1998 and 1999 from Abies fabri forest at Gongga Mountain.Simulated fluxes of soil CO2 emission calibrated by changing temperature and humidity in the formula fitted well with values by measurement,especially that in winter.The mean error and the mean relative error of calibrated simulation of soil CO2 emission decreased 3.81kg/hm2 and by 13.49% than that of cold simulation as well as the mean and relative mean absolute error.The Nash-Sutcliffe index of model efficiency increased from 0.651 to 0.683.Validation of the model demonstrated that simulated CO2 emission of daily and seasonal change was similar to measured one.
资助信息国家重点基础研究发展计划资助(2005CB422005)
语种中文
公开日期2010-09-19
内容类型期刊论文
源URL[http://ir.imde.ac.cn/handle/131551/1992]  
专题成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前)
成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
推荐引用方式
GB/T 7714
鲁旭阳,范继辉,程根伟. 贡嘎山冷杉林土壤CO_2释放的模拟研究[J]. 浙江林业科技,2009,29(6):11-16.
APA 鲁旭阳,范继辉,&程根伟.(2009).贡嘎山冷杉林土壤CO_2释放的模拟研究.浙江林业科技,29(6),11-16.
MLA 鲁旭阳,et al."贡嘎山冷杉林土壤CO_2释放的模拟研究".浙江林业科技 29.6(2009):11-16.
个性服务
查看访问统计
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。


©版权所有 ©2017 CSpace - Powered by CSpace