摘要
To analyze the basic conditions of constant colored-leaved tree species in Tibet, this study applied the "biological five-point method" to investigate the plant communities layer by layer, investigated landscape plant species and their landscaping application in Tibet. The results showed that(a) there are 40 constant color-leaved species(including varieties) in Tibet, belonging to 35 genera, 22 families, including 26 tree species and 16 shrub species. In terms of color, 22 species are yellow, 9 purple, 7 red and 2 others, occupying 55.00%, 22.50%, 17.50% and 5.00% of the total constant color-leaved species, respectively.(b) In the tree layer, the species ranking the top 2 of the importance value list are Prunus cerasifera Ehrhar f. atropurpurea Rehd. and Photiniax serrulata ‘Rubens' with an importance value of 26.063 and 9.035; in the shrub layer, the species ranking the top 3 of the importance value list are Ligustrum × vicaryi Hort, Berberis thunbergi var. atropurpurea Chenault, Platycladus orientalis cv. Aurea Nana with an importance value of 22.577, 18.987 and 10.529.(c) The most-applied species belong to the Rosaceae(9), Leguminosae(5), and Oleaceae(3), accounting for 22.50%, 12.50% and 7.50% of the total investigated constant color-leaved species, respectively.(d) Most of the investigated species grow well, but some of them including Berberis thunbergii var. atropurpurea Chenault grow moderately, Loropetalum chinense var. rubrum, Aucuba chinensis var. iegata grow poorly, and the causes of poor growth should be explored further or application of these species should be controlled. In addition, pertinent suggestions were put forward in view of major problems in the application of constant color-leaved species in Tibet.
To analyze the basic conditions of constant colored-leaved tree species in Tibet, this study applied the "biological five-point method" to investigate the plant communities layer by layer, investigated landscape plant species and their landscaping application in Tibet. The results showed that(a) there are 40 constant color-leaved species(including varieties) in Tibet, belonging to 35 genera, 22 families, including 26 tree species and 16 shrub species. In terms of color, 22 species are yellow, 9 purple, 7 red and 2 others, occupying 55.00%, 22.50%, 17.50% and 5.00% of the total constant color-leaved species, respectively.(b) In the tree layer, the species ranking the top 2 of the importance value list are Prunus cerasifera Ehrhar f. atropurpurea Rehd. and Photiniax serrulata ‘Rubens' with an importance value of 26.063 and 9.035; in the shrub layer, the species ranking the top 3 of the importance value list are Ligustrum × vicaryi Hort, Berberis thunbergi var. atropurpurea Chenault, Platycladus orientalis cv. Aurea Nana with an importance value of 22.577, 18.987 and 10.529.(c) The most-applied species belong to the Rosaceae(9), Leguminosae(5), and Oleaceae(3), accounting for 22.50%, 12.50% and 7.50% of the total investigated constant color-leaved species, respectively.(d) Most of the investigated species grow well, but some of them including Berberis thunbergii var. atropurpurea Chenault grow moderately, Loropetalum chinense var. rubrum, Aucuba chinensis var. iegata grow poorly, and the causes of poor growth should be explored further or application of these species should be controlled. In addition, pertinent suggestions were put forward in view of major problems in the application of constant color-leaved species in Tibet.
基金
Sponsored by Key Program of National Sci-tech Support Plan(2013BAJ03B00)
National Natural Science Foundation of China(51568059)
