Qualitative Analysis of the Effect of Weeds Removal in Paddy Ecosystems in Fallow Season
Joint Authors
Zhou, Leru
Liu, Zhigang
Zhou, Tiejun
Source
Discrete Dynamics in Nature and Society
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-11
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
In the paper, we introduce a differential equations model of paddy ecosystems in the fallow season to study the effect of weeds removal from the paddy fields.
We found that there is an unstable equilibrium of the extinction of weeds and herbivores in the system.
When the intensity of weeds removal meets certain conditions and the intrinsic growth rate of herbivores is higher than their excretion rate, there is a coexistence equilibrium state in the system.
By linearizing the system and using the Routh–Hurwitz criterion, we obtained the local asymptotically stable conditions of the coexistence equilibrium state.
The critical value formula of the Hopf bifurcation is presented too.
The model demonstrates that weeds removal from paddy fields could largely reduce the weeds biomass in the equilibrium state, but it also decreases the herbivore biomass, which probably reduces the content of inorganic fertilizer in the soil.
We found a particular intensity of weeds removal that could result in the minimum content of inorganic fertilizer, suggesting weeds removal should be kept away from this intensity.
American Psychological Association (APA)
Zhou, Leru& Liu, Zhigang& Zhou, Tiejun. 2020. Qualitative Analysis of the Effect of Weeds Removal in Paddy Ecosystems in Fallow Season. Discrete Dynamics in Nature and Society،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1153524
Modern Language Association (MLA)
Zhou, Leru…[et al.]. Qualitative Analysis of the Effect of Weeds Removal in Paddy Ecosystems in Fallow Season. Discrete Dynamics in Nature and Society No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1153524
American Medical Association (AMA)
Zhou, Leru& Liu, Zhigang& Zhou, Tiejun. Qualitative Analysis of the Effect of Weeds Removal in Paddy Ecosystems in Fallow Season. Discrete Dynamics in Nature and Society. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1153524
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1153524