| 改进Biome-BGC模型模拟哈佛森林地区水、碳通量 |
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| 引用本文： | 张廷龙,孙睿,胡波,冯丽超,张荣华.改进Biome-BGC模型模拟哈佛森林地区水、碳通量[J].生态学杂志,2011,30(9):2099. |
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| 作者姓名： | 张廷龙 孙睿 胡波 冯丽超 张荣华 |
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| 作者单位： | 1. 遥感科学国家重点实验室(北京师范大学/中国科学院遥感应用研究所),北京100875;北京师范大学地理学与遥感科学学院,北京100875;北京市环境遥感与数字城市重点实验室,北京100875
2. 宁波市气象局,浙江宁波,315012 |
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| 基金项目： | 国家自然科学基金，公益性行业(气象)科研专项经费项目，欧盟计划FP7-ENV-2007-1项目 |
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| 摘 要： | Biome-BGC模型通过耦合植被、土壤与大气间的水分与CO2交换过程,实现植被生产力的模拟,但土壤水平衡模块的不够完善,导致在长时间无降水情况下植被生产力模拟存在较大误差.针对这一问题,本文对Biome-BGC模型中土壤水分胁迫气孔导度方程、蒸散计算公式及土壤水分流失过程等3方面进行了改进和调整,利用改进的Biome-BGC模型模拟美国哈佛森林地区蒸散、植被生产力,并与地面通量观测值进行了比较.结果表明,改进后模拟精度有明显的提高,蒸散、植被生态系统生产力(NEE)与观测值间的决定系数分别由0.483和0.658提高到0.617和O.813,蒸散逐年均方根误差平均下降了48.7％,NEE逐年误差平方和平均下降了39.8％.改进后的模型模拟结果更接近观测值.
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| 关 键 词： | 哈佛森林 Biome-BGC模型 碳通量 蒸散 |
Simulation of water and carbon fluxes in Harvard forest area by using improved BiomeBGC model. |
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| ZHANG Ting-long,SUN Rui,HU Bo,FENG Li-chao,ZHANG Rong-hua.Simulation of water and carbon fluxes in Harvard forest area by using improved BiomeBGC model.[J].Chinese Journal of Ecology,2011,30(9):2099. |
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| Authors: | ZHANG Ting-long SUN Rui HU Bo FENG Li-chao ZHANG Rong-hua |
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| Institution: | ZHANG Ting-long1,2,3,SUN Rui1,HU Bo4,FENG Li-chao1,ZHANG Rong-hua1,3(1 State Key Laboratory of Remote Sensing Science,Jointly Sponsored by Beijing Normal University and the Institute of Remote Sensing Applications of Chinese Academy of Sciences,Beijing 100875,China,2 School of Geography and Remote Sensing Sciences,Beijing Normal University,3 Beijing Key Lab for Remote Sensing of Environment and Digital Cities,4 Ningbo Meteorological Bureau,Ningbo 315012,Zh... |
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| Abstract: | Using Biome-BGC model can simulate vegetation productivity through the coupling of water and CO2 exchange processes between vegetation,soil and atmosphere,but the soil water balance module is not perfect enough,leading to a large deviation between simulated and observed values under condition of a long time no precipitation.Aiming at this problem,this paper improved and adjusted the equation of stomatal conductance stressed by soil water,the calculation formula of evapotranspiration,and the process of soil ... |
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| Keywords: | Harvard forest Biome-BGC model carbon flux evapotranspiration |
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