Yes, the following parameters can be used to classify invasive plants: size, fecundity, competition, breadth of ecological niche, effect on total biomass, etc.

See:

Ecol Evol. 2015 May; 5(10): 1933–1943.

Published online 2015 Apr 17. doi:  10.1002/ece3.1432

Invasiveness of plants is predicted by size and fecundity in the native range

I hope this helps :)

Dear colleague,

one way would be follwoing the terminology of the EU Invasive Alien Species (IAS) Regulation, where 'invasiveness' is explained.

http://ec.europa.eu/environment/nature/invasivealien/index_en.htm

Other Information can be seen in e.g. Swiss, German, Austrian, UK lists of IAS, which include tree species, too.

Best regards

Georg

good greeting

I suggest you follow

Http://environment.arlingtonva.us/2015/04/updates-to-state-regulations-and-resources-on-invasive-plants/

Maybe a little help

According to U.S Forest Service (https://www.fs.fed.us/pnw/invasives/): How Does a Species Become Invasive?

Often, invasive species owe their success in colonizing new ecosystems to one or more of the following characteristics:

1. They tolerate a variety of habitat conditions

2. They grow and reproduce rapidly

3. They compete aggressively for resources (like food, water, and nesting sites)

4. They lack natural enemies or pests in the new ecosystem

All of the above answers are essentially correct, but in my assessments I consider a species "invasive" when the introduced species in question out-competes or displaces at least one native species.

Une espèce invasive dans le domaine marin est le plus souvent une espèce non indigène dont la compétitivité est forte  du fait de sa large tolérance à des conditions environnementales drastiques. Elle s'installe en conséquence de façon préférentielle dans les zones de   forte déstabilisation des écosystèmes.

nvasive plants seem to have a few things in common.

They produce seeds or berries prolifically, which are often bird-dispersed

They are “generalists,” meaning that they can grow in many different conditions

They grow quickly

They lack enemies, in that not many animals will eat them and few diseases affect them in their new environment

http://dx.doi.org/10.1016/j.tplants.2008.03.004

http://www.fs.fed.us/pnw/invasives/

According to studies: "the invasion success of many species might depend more heavily on their ability to respond to natural selection than on broad physiological tolerance or plasticity (see attached paper)." Genetic factors can be important in invasion success. This include epistatic interactions and the action of a few genes which could facilitate invasion success.

Interesting invasive plant species is a species that invades land,water resources and other indigenous plant species aggressively. The seed of the plant species germinates fast. So invasive plant species like Prosopis juliflora which is introduced to Ethiopia, Afar regional state to protect dessert condition of the area now invaded area including the farmlands and grazing lands of the region out control of the national government.

May be little help 

Thank you all of you