陆地生态系统氮循环模型

陆地生态系统氮循环模型

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
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yue@lreis.ac.cn
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Classification(s)

Earth System SubjectEarth Surface System Synthesis
Geography SubjectPhysical GeographyEcosystem

Detailed Description

陆地生态系统氮循环模型

 

(1)  植被方程:

 

 

 

 

 

 

(2)  有机土壤方程:

 

 

 

 

 

 

 

 

 

(3)  无机土壤方程:

 

 

 

 

 

 

 

式中,为植物中碳的潜在存储量(potential storage ofcarbon in vegetation为植物中氮的潜在存储量(potential storage ofnitrogen in vegetation为土壤碎屑层中碳的潜在存储量(potential storage ofcarbon in detritus);为土壤碎屑层中氮的潜在存储量(potential storage ofnitrogen in detritus);为土壤腐殖层中碳的潜在存储量(potential storage ofcarbon in humus);为土壤腐殖层中氮的潜在存储量(potential storage ofnitrogen in humus);为氨态氮的潜在存储量(potential nitrogen storageas in ammonium);为硝酸盐态氮的潜在存储量(potential nitrogenstorage as in nitrate);为总初级生产力这种光合作用率(flux of photosynthesisas in gross primary production);为树干和树根的呼吸作用率(flux of respiration oftrunk and root); 为落叶携带的碳的流失率(flux of litter-fall fromleaf as in carbon);为落叶携带的氮的流失率(flux of litter-fall fromleaf as in nitrogen);为枝干或根的掉落携带的碳的流失率(flux of litter-fallfrom trunk/root as in carbon);为枝干或根的掉落携带的氮的流失率(flux of litter-fallfrom trunk/root as in nitrogen);为植物的氮的吸收率(flux of nitrogen uptake byplant);为以氮化合物形式的碳固化率(flux of carbon fixationas in nitrogen);为氮固化率(flux of nitrogen fixation as innitrogen);为落叶层中碳的分解率(flux of detritusdecomposition as in carbon);为落叶层中氮的无机化率(flux of detritusdecomposition as in nitrogen);为落叶层中碳的腐殖率(fluxof detritus huminification as in carbon);为落叶层中氮的腐殖率(flux of detritus huminification as in nitrogen);为腐殖层中碳的分解率(flux of humusdecomposition as in carbon);为腐殖层中氮的无机化率(flux of humusdecomposition as in nitrogen);为腐殖层中碳化的碳的损失率(flux of humuscarbonization as in carbon);为腐殖层中碳化的氮的损失率(flux of humuscarbonization as in nitrogen);为氨态氮的沉积率(flux of nitrogen depositionas in ammonium);为硝酸盐态氮的沉积率(flux of nitrogendeposition as in nitrate);为硝酸盐化率(flux of nitrifation);为硝酸盐化过程中气体状散逸率(flux of gaseousemission during nitrification process);为氨态氮挥发率(flux of ammoniavolatilization);为反硝酸化率(flux of denitrification);为硝酸盐态氮淋滤率(flux of nitrate leaching)。

 

(4)  氮流量方程:

 

 

 

 

式中,是生态系统的生物固定能力。

 

 

 

式中,是碳氮比。

 

 

 

 

 

式中,是降水量;是降水中氨及硝酸盐浓度;分别是的干沉降。

 

 

 

 

 

式中,是腐层停留周期(a);是腐过程碳化是的碳氮比。

 

 

 

 

 

 

 

 

 

 

 

 

 

式中,是植物氮吸收速率为最大值的一半时的可用氮浓度;是硝化常数;是消化过程中气体散逸速率常数;是反硝化常数。

 

参考文献

Lin BAkiyoshi S Shibasaki T et al:陆地生态系统中全球生物地球化学氮循环模型。EcologicalModelling2000135

How to cite

《资源环境数学模型手册》 (2018). 陆地生态系统氮循环模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/96e1738a-3317-44ed-87cf-f5d4f5cbaf2c
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Contributor

contributed at 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
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Is authorship not correct? Feed back

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