Adaptability Investigation and Influence Factors Analysis on The Plants in Pavilion of Future
Date Issued
2014
Date
2014
Author(s)
Liang, Wen-Tai
Abstract
The Future Pavilion is considered the most important exhibition greenhouse in northern Taiwan. It is characteristic of combining the concept of green building and gigantic greenhouse. Geological and ecological environments were recreated by planting many plantations. Nevertheless, continuous running of the show room relays on proper maintainance and slelction of the plantation. This study investigates all the mimic environments in the greenhouse and evaluates the plant growth conditions to build up the important plant cultivation reference for The Future Pavilion. In addition, the original maintenance database for plant is reviewed to analyze the reasons for poor plant growth and served for future references.
The investigation includes 538 plant species within 133 genus. The five largest number of plant families are Cactaceae (52 species), Euphorbiaceae (25 species), Araceae (23 species), Agavaceae (19 species), and Rosaceae (15 species), respectively. The average rating for plant appearance quality is 3.9 (full score = 5). The native plant area (4.04), subtropical area (4.01) and the succulent garden (4.41) had higher rating than average, whereas the tropical area (3.80), mountainous area (3.80), temperate area (3.7), and orchids and fern area (3.17) were lower than average. Based on the Apr 2014 final investigation, the percentages of well-adapted plants (level I and II), fairly-adapted plants (level III), poor-adapted plants (level IV and V) and dead plants among all investigated species were 66.3%, 14.4%, 13.6%, and 5.7%, respectively. The adaptive quality of plants is found highly correlated to plant characteristics, growing location, maintenance quality, and mortality rate, but not the family or species classification.
Growing condition had wind speed ranged as 0.3-1.5 m/s (level 1) in most of the places in the greenhouse. Greater wind speed (level 2) was only found at the entrance of the succulent area, which negatively affects the plant growth. The relative humidity (RH) at the top of the crag, the succulent area, and the crag in alpine plant area were lower than average, whereas the rest of the areas have average RH higher than 80%. Adequate light condition was found at the canopy layer in the greenhouse, but extreme high temperature also occurs here in the summer. The light condition and the temperature investigated are found suitable for the growth for most of the plants, but the light was insufficient for succulents. Soil hardiness ranged from 6 to 18 mm and was suitable for plant growth. Regarding to the water condition, all the soil water contents meet the proper range for most of the plants, except that the crag has severe water insufficiency. The pH ranged 5.59-6.48. However, soil EC was found greatly lower than the standard in many of the places and resulted in several nutrient issues.
According to the investigation of the maintenance quality, the auto-irrigation facilities did not irrigate evenly, causing either the problem of water deficiency or over-watering. For manual irrigation, the frequency and the irrigation amount were adequate for the plants in most of the exhibition areas but not for the orchid and fern area, and the crags. The general quality of pruning management should be more improved, particularly the pruning for the poorly-grown plants and the heavy pruning. High temperature resulted in more pest problems, and high humidity resulted in more disease problems. Due to complex environments and plant species, pest and disease control were ineffective. The low soil fertility was caused by long-term inproper fertilization.
Regarding to the fertilization quality, plant species, fertilization methods, and different degrees of nutrient insufficiency all significantly affect the results of the recovery treatments for nutrient-deficient plants. Leaf spray fertilization was less effective than direct fertigation on soil surface and might cause salt injury. Fertigation might be benefitial to plants, but also had leaching and complicated handling problems. Thus, water soluble fertilizers are not suggested to be used solely for fertilization. In order for continuous operation, mangers were recommended to maintain plants with proper treatments according to plant characteristics, present growth conditions, and soil ferttility.
Subjects
適應性
展覽溫室
綠建築
原生植物
熱帶植物
Type
thesis
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