멸종위기식물 풍란의 복원 후 시간경과에 따른 생육특성

Abstract

The purpose of this study was to analyze the flora and growth characteristic of restoration sites to investigate the efficient restoration method of endangered species of N. falcata. Analysis of investigating the growth medium, flora, growth and interaction of N. falcata by the number and method of attachment, correlation between growth and meteorological factors, coefficient estimate in a logistic regression model for the probability of survival was conducted.1. The floraThe flora of N. falcata habitat site was a total of 48 taxa including 29 families, 45 genera, 40 species and 8 varieties, and restoration site was a total of 48 taxa including 26 families, 42 genera, 43 species and 5 varieties. Among the plant species, 5 taxa were endemic plants in habitat site, and 1 taxa were endemic plant. 2 taxa were naturalized plants only in restoration site. There were a total of 24 taxa for the floristic regional indicator plants in habitat site, and a total of 16 taxa for the floristic regional indicator plants in restoration site. For a quantitative and objective analysis and evaluation of the flora, endemic index in habitat site (10.4%); restroration site (4.2%), specific index in habitat site (50.0%); restoration site (33.4%) and Pte-Q in habitat and restoration site (0.53), unaturalized index (4.2%), urbanized index (0.5%) only in restoration site used in this study.2. Gathering the seeds and investigating the growth medium of N. falcataAs to the result of an analysis of four culture media, including LMWP, MS, MS+Charcoal and Hyponex for an investigation of the appropriate growth medium for the seeds, the width of the plant, the number of leaves, the length of the leaves and the number of roots, overall, the figure of growth were highest in the LMWP culture medium.3. Growth monitoring of N. falcata after restorationAccording to the result of the growth monitoring of N. falcata , The survival rate was 27.0%, the death rate was 24.0%, the loss rate was 48.0%. According to the result of survival status by method of attachment, individual attached to the moss (35.4%) ＞ individual attached to the stone (22.2%) ＞ individual attached to the tree (8.3%) survived in order. According to the result of survival status by number of attachment, 1 individual (28.9%), 2 individuals(27.8%), 3 individuals(26.6%) survived in order.4. Growth of N. falcata over time after restorationAccording to the result of the overall growth rate analysis, shoot number increased to 190%, plant length to 134%, plant width to 121%, leaf number to 126%, and leaf length to 114%, however, the leaf width decreased. According to the result of the growth rate analysis by method of attachment, shoot number, plant length, plant width, leaf number, leaf width, leaf length were all found to have a positive effect on growth. According to the result of the growth rate analysis based on number of attachment, single shoot attached on plants has shown better growth than two or three attachment. Whereas 2 individuals attached to the plant shown better plant width, leaf width and growth. On the other hand, leaf number and leaf length were found to have a positive difference on the growth of 3 individuals. 5. Statistical analysisAccording to the result of analysis of the interaction effect between the method of attachment and the number of attachment after restoration, attachment method of tree, moss was relatively good for growth compared to stone