8Salvador Montiel,Carlos Monta?a.Seed bank dynamics of the desert cactus Opuntia rastrera in two habitats from the Chihuahuan Desert[J]. Plant Ecology . 2003 (2)
9Johnson MS,,Bradshaw AD.Ecological principles for therestoration of disturbed and degraded land. Applied Biochemistry and Biotechnology . 1979
10Matlack GR,,Good RE.Spatial heterogeneity in the soilseed bank of a mature coastal plain forest. Bull.Torrey Bot.Club . 1990