| Cerasus, belonging to Rosaceae, which contains abundant kinds of species, distributes widely, and owns remarkable ornamental value, has been greatly favourited in landscaping of our country.However, the domestic Cerasus landscape usually demonstrates the competence in quantity while lacks deep study of cultivar resource, landscape planning, plant arrangement and landscape culture. Besides, problems as error and confusion in nomenclature exists commonly because of rapid upgrate of introcution of new cultivar. Hence, a normalization is needed for research of Cerasus family and its market application. This paper investigated and categorized Cerasus cultivars resources; studied and analyzed Cerasus communities from aspects of species composition, quantitative characteristics, plant diversity and hierarchy; quantitatively and qualitatively evaluated Cerasus landscape scenic beauty degree by AHP method to get better scored Cerasus landscape models; systematically reviewed and concluded Cerasus culture to provide professional guidance for establishing Cerasus landscaping. The main results are as follows:1) By literature review and field study, it was reorganized and recorded that there were totally 19 garden-cultivated species, 1 varietas and 90 cultivars of Cerasus used in landscaping. 90 cultivars including 22 newly-introducedwere distributed into 14 phylogenies(13 species and 1 varietas). The morphological characteristics of newly-introduced cultivars were recorded and described as well as their origin and application were discussed. In addition, the nomenclature of Cerasus cultivars were reorganized into 20 cultivars names which were firstly reported.,. Finally,species key accordingly were compiled.2) Added C. serrulata var. lannesiana Taige Group to C. serrulata var. lannesiana cultivars system. Therefore C. serrulata var. lannesiana cultivars system now contains 5 cultivar groups: C. serrulata var. lannesiana Single Group?C. serrulata var. lannesiana Semidouble Group?.C. serrulata var. lannesiana Double Group?C. serrulata var. lannesiana Juban Group?C. serrulata var. lannesiana Taige Group.3) This paper recorded 69 familiie, 122 genera, and 221 species after survey of 58 Cerasus communities from 6 parks: Xuanwu Lake park in Nanjing, Shanghai botanic garden, Gucun Park, Chenshan Botanic garden in Shanghai, Prince Bay park in Hangzhou and Turtle Head Isle park in Wuxi. Survey results indicated a subnormal diversity of species with relatively higher repetition proportion on average. In community structure, major proportion of tree layer was found; species diversity and quantity of shrubs layer was significantly insufficient compared with tree layer. Although slight irrational ratio was found between trees, shrubs and herb layers, rational vegetation density was finally confirmed. Also, the high-low layering varied with types of gardens. Community diversity was analyzed by 4 indicators as Gleason, Simpson, Shannon-Wiener and Pielou in this paper and significant difference was identified for Gleason and Shannon-Wiener indicators corresponding to garden and landscape types, while no distinguished value was proved by Simpson and Pielou indicators.4) Landscape analysis was implemented over 58 communities by AHP method and corresponding evaluation model was established. Cerasus communities were categorized as landscape of waterfront green space, road green space, natural community, architectural articles, Cerasus forest and open forest grassland. Highest scored communities in each category were analyzed individually.5) A thorough literature review was provided and a comparison of Cerasus culture between China and Japan was furnished. Compared with China, shorter history but faster development of Cerasus cultivation were found in Japan. Cerasus has become an indispensable element in Japanese life, even blended in every aspect of their life since Heian Period. This paper also categorized Japanese Cerasus by different circumstances from linguistics, naming, literature works to their living. |
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