植物入侵对土壤微生物影响的种群适应性生长模型

The Models of Soil Microbial Population with Adaptive Nutrient Uptake Effected by Plant's invasion

植物入侵为入侵地提供新的增量营养,激发土壤中微生物在不同生存状态之间随营养的变化而进行转换。文章利用微分方程模型分析了当微生物功能反应满足生殖常数R0>1时,微生物数量达到新的平衡状态。若新增营养丰富,微生物将有机会大量繁衍,数量逐渐达到平衡状态εx=(-x,0,Rx)。说明植物的成功入侵过程改变了土壤微生物功能群。

For the plant＇s invasion brings rich carbon resources, soil microbial species will transition from a reproducing--slow to a reproducing-fast state and back in order to adapt the new settling environment. When the basic reproductive number then the population will be asymptotic to a new steady state. The plant＇s activities changed the microbial functional groups in the soils.