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当前位置: 首页 > 文章 > CENTURY模型在杉木人工林生态系统的适用性研究 中南林业科技大学学报 2017 (7) 99-104
Position: Home > Articles > Validation and adaptability evaluation of Chinese fir plantation ecosystem model CENTURY Journal of Central South University of Forestry & Technology 2017 (7) 99-104

CENTURY模型在杉木人工林生态系统的适用性研究

作  者：
郝博;闫文德
单  位：
中南林业科技大学;湖南会同杉木林生态系统国家野外科学观测研究站;南方林业生态应用技术国家工程实验室
关键词：
杉木人工林;CENTURY模型;模型验证;适用性
摘  要：
基于土壤有机质模型CENTURY研究典型亚热带杉木人工林有着重要意义。本研究以湖南会同杉木林生态站为研究地点,基于会同观测站的长期气象资料,以及站内杉木人工林的生物量实测资料和生产力实测资料,对CENTURY模型进行了校正和模拟。首先在现有研究基础上收集模型运行所需数据,如土壤质地和土壤C、N含量等。其次在模型内的文件中改写所需驱动参数。运行模型后的结果表明:CENTURY模型模拟杉木人工林生物量的模拟值与实测值变化趋势一致,决定系数R2为0.937,大于临界值,均方根误差值RMSE为27.46 t·hm-2。同时在以月为单位的时间尺度上能够准确模拟杉木林生产力的变化,模拟结果反应气候与降水随着季节变化影响到杉木林生产力的变化,在适宜的气温和降水量达到峰值时植物生长也进入最活跃阶段,与先前的生产力研究结果吻合,说明模型能够模拟杉木林生物量对驱动参数变化的响应,适用于杉木林生态系统。
译  名：
Validation and adaptability evaluation of Chinese fir plantation ecosystem model CENTURY
作  者：
HAO Bo;YAN Wende;Central South University of Forestry and Technology;National Engineering Laboratory for Applied Technology of Forestry & Ecology in South China;Huitong National Field Station for Scientific Observation and Research of Chinese Fir Plantation Ecosystem in Hunan Province;
关键词：
Chinese fir plantation;;CENTURY model;;model validation;;applicability
摘  要：
It has important significance to use the soil organic carbon CENTURY model simulates the biomass of typical subtropical Chinese fir plantation. In this study, we set up study sites at Chinese fir Plantation in Hunan Province Ecological Station. The CENTURY model calibration and simulation base on a long time observation station meteorological data, as well as the station of Chinese fir plantation biomass productivity measured data. First we collect the research data needed for model running, Such as soil texture and soil C and N content. And then rewrite the model driving parameters. The model operation results show that Chinese fir plantation simulated values have a same trend with the measured values. The determination coefficient(R2) was 0.937 greater than the critical value. Relative mean square roots was 27.46 t·hm-2.The model is able to accurately simulate the productivity of Chinese fir plantation with month as the time unit. The simulation results react the relationship between the climate and precipitation with productivity of Chinese fir plantation. Peak under suitable temperature and precipitation during plant growth has entered the most active stage, with consistent with previous research results. All above explain this model can be applied to Chinese fir plantation ecosystem.

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