Table 1.

List of intentionally introduced alien plant species (IIAPS) used in the species distribution model.

IAPAS Group a	ID No.	Scientific Name	Common Name	Native Range	Mode of Introduction	Introduction Period	Degree of Naturalization
Group 1	I223	Medicago sativa	Alfalfa	Mediterranean	Intentional (Pasture)	Before 1949	III
Group 2	I072	Amorpha fruticosa	Bastard indigo bush	North America	Intentional (Erosion control)	Before 1949	V
	I138	Dactylis glomerata	Orchard grass	North Africa	Intentional (Pasture)	Before 1949	V
	I165	Festuca arundinacea	Tall fescue	North Africa	Intentional (Pasture)	Before 1970	V
	I176	Helianthus tuberosus	Jerusalem artichoke	North America	Intentional (medicinal)	Before 1911	V
	I258	Poa pratensis	Kentucky bluegrass	Temperate zone	Intentional (Erosion control)	Before 1949	IV
Group 3	I129	Coreopsis lanceolata	Lance leaf coreopsis	North America	Intentional (Erosion control)	Before 1963	V
	I150	Eragrostis curvula	African love grass	North Africa	Intentional (Erosion control)	Before 1990	IV
	I157	Ageratina altissima	White snakeroot	North America	Intentional (Gardening)	Before 1990	IV
	I210	Lolium perenne	Ryegrass	North Africa	Intentional (Pasture)	Before 1970	IV

^a Division into group 1, group 2, or group 3 was based on the principal component analysis of the spatial distribution of intentionally introduced alien plant species (IIAPS) shown in Figure 3. The Roman numerals I to IV in the last column indicate the degree of naturalization of the IIAPS. I, rarely; II, low density and distributed in a small area; III, low density but distributed widely; IV, high density and distributed locally; V, high density and distributed widely.