The study achievements on the species diversity of plant community were summarized, which included the diversity study methods, the mechanism of origin and sustain of diversity, the environmental and biological factor...The study achievements on the species diversity of plant community were summarized, which included the diversity study methods, the mechanism of origin and sustain of diversity, the environmental and biological factors affecting the diversity changes, the ecological impact of diversity changes.展开更多
In the present review, recent progress on the vortex identification methods are introduced with a focus on the newly proposed omega method（ Ω method）. The advantages of Ω method are summarized with many illustrati...In the present review, recent progress on the vortex identification methods are introduced with a focus on the newly proposed omega method（ Ω method）. The advantages of Ω method are summarized with many illustrating examples. Furthermore, comparing with other existing methods（e.g., Q criterion and λ2 criterion）, one of the characteristics of Ω method is its independence on the chosen threshold values for vortex identifications. The important parameters involved for the practical applications of Ω method are further discussed in detail together with the physical interpretation of the Ω and some suggestions of the future work. Other emerging topics（e.g., Lagrangian coherent structure and Rortex） are also introduced with comments.展开更多
文摘The study achievements on the species diversity of plant community were summarized, which included the diversity study methods, the mechanism of origin and sustain of diversity, the environmental and biological factors affecting the diversity changes, the ecological impact of diversity changes.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.51506051,51606221)
文摘In the present review, recent progress on the vortex identification methods are introduced with a focus on the newly proposed omega method（ Ω method）. The advantages of Ω method are summarized with many illustrating examples. Furthermore, comparing with other existing methods（e.g., Q criterion and λ2 criterion）, one of the characteristics of Ω method is its independence on the chosen threshold values for vortex identifications. The important parameters involved for the practical applications of Ω method are further discussed in detail together with the physical interpretation of the Ω and some suggestions of the future work. Other emerging topics（e.g., Lagrangian coherent structure and Rortex） are also introduced with comments.
