Search

To figure out current landscaping of Linzhi City, analyze the basic situation of local landscaping quantitatively, and solve related problems in landscaping, this paper applied the "five-point sampling method" for the layered survey of landscape plant communities, investigated landscape plant species and their application in different regions of Tibet, particularly current landscaping, features and problems of Linzhi City, and put forward corresponding measures. The investigation covered 321 species (cultivars) of 196 genera, 87 families. The results showed that (1) Salix alga, Ligustrum x vicaryi, Poa pratensis had the highest importance value in the tree layer, shrub layer and herb layer, respectively, and the Importance value was 68.620, 24.139 and 35.747, respectively (2) Among all landscape plants in Linzhi City, the most applied families were Rosaceae (48), Salicaceae (21), Asteraceae (20), Leguminosae (20), Gramineae (19), Pinaceae (16), Cupressaceae (13) and Oleaceae (12), accounting for 14.95%, 6.54%, 6.23%, 6.23%, 5.92%, 4.98%, 4.05% and 3.73% of the total investigated species. (3) Natural environment of the plateau was the most influential restraint for local landscaping, and the application of landscape plants varied greatly among regions. (4) The local area was endowed with rich landscape plant resources, but these resources were not fully developed. [ABSTRACT FROM AUTHOR]

To figure out current urban greening of Lhasa City, analyze the basic situation of its landscaping quantitatively, and solve problems in urban greening, this paper applied "five-point sampling method" for the layered survey of landscape plant communities, investigated landscape plant species and application in Tibet comprehensively, elaborated current landscaping, characteristics and problems of Lhasa City, and gave pertinent countermeasures. The investigation covered 159 landscape plant species (varieties), 100 genera and 45 families. The results showed that species with the highest importance value in tree layer, shrub layer and herb layer were Prunus cerasifera f. atropurpurea (49.861), Platycladus orientalis cv Sieboldii (27.756), Poa pratensis (55.386); in the tree and shrub layer, Rosaceae was most applied (27 species), Salicaceae was the second most applied (18 species), followed by Oleaceae (9 species), Cupressaceae (8 species) and Leguminosae (6 species), the 5 families accounted for 24.77%, 16.51%, 8.26%, 7.34% and 5.50% of the investigated trees and shrubs; the applied landscape species were not rich, and landscaping development was not even; landscape plants were not reasonably combined, the introduced species accounted for a high ratio, and the ratio of native species was extremely low. [ABSTRACT FROM AUTHOR]

Site survey was applied to investigate landscape plants in Shigatse City of Tibet, current situation, pattern and problems of landscaping in the city were analyzed, and corresponding moves were proposed. The investigation covered 71 species (including varieties) of 45 genera and 20 families. The results showed that Populus × beijingensis W. Y. Hsu, Platycladus orientals and Poa pratensis had the highest importance value (47.787,86.802,75.700) in the tree layer, shrub layer and herb layer, respectively. Among all landscape plants in the city, Salicaceae is the most applied one, including 15 species; Rosaceae is the second most, including 10 species; and Leguminosae is the third, including 6 species. The three families account for 21.13%, 14.08% and 8.45% of the total investigated plants. The simple compound structures such as "tree + ground cover" and "shrub + ground cover" are major greening patterns of the city. Growth vigor of local plants is poor, and "ensuring the survival rate" is a key task in the urban landscaping. [ABSTRACT FROM AUTHOR]

To figure out current landscaping of Tibet, analyze local garden landscaping quantitatively, and solve greening problems, this paper adopted "five-point sampling method" for the stratified survey of garden plant communities, investigated species and application of garden plants in Tibet comprehensively, discussed current situation, characteristics and problems of local landscaping, and proposed corresponding measures. According to the investigation, (1) There arc 368 applied garden plant species (including varieties) of 207 genera, 91 families; (2) In the tree layer, shrub layer and herb layer, Picea likiangensis var. likiangensis, Buxus megistophylla, Poa pratensis have the highest importance value, i.e., 43.050, 25.128, 45.950; (3) The most applied families in local landscaping are Rosaceae (53), Salicaceae (23), Compositae (21), Leguminosae (20), Gramineae (19), Pinaceae (16), Oleaceae (14) and Cupressaceae (12), accounting for 14.40%, 6.25%, 5.71%, 5.43%, 5.16%, 4.35%, 3.80% and 3.26% of the total, respectively; (4) The total landscaping level is poor and uneven, application of landscaping plants varies greatly among regions, garden application is poor; (5) Proportion of garden landscapes is unreasonable. [ABSTRACT FROM AUTHOR]