碩士 / 國立花蓮教育大學 / 生態與環境教育研究所 / 95 / The purpose of this study is to investigate the vegetation of the costal areas in Taroko National Park and map real costal vegetation patterns in chart according to the species and vegetation types found in these areas. There were 443 vascular plants documented. Vegetation classification obtained in this study is useful as a basis for real vegetation mapping. In this study, a total of 119 species and six environmental factors (Altitude、Slope、Aspect、Topographic、Stone、Wind velocity) from the 80 sampling plots were analyzed by DCA, TWINSPAN and tabular comparison in the syntaxa. After grouping similar setting and naming each group, The results of the syntaxa was classified into 10 alliances and 17 associations as following. These 17 associations include Imperata cylindrical-Saccharum spontaneum ASS.、Ipomoea pescaprae-Vitex rotundifolia ASS.、Vitex rotundifolia ASS.、Bidens chilensis-Miscanthus sinensis ASS.、Miscanthus sinensis ASS.、Rhus javanica-Arundo formosana ASS.、Arundo formosana ASS.、Alpinia zerumbet-Macaranga tanarius ASS.、Casuarina equisetfolia ASS.、Pandanus odoratissimus ASS.、Arundo formosana-Leucaena leucocephala ASS.、Leucaena leucocephala ASS.、Broussonetia papyrifera-Macaranga tanarius ASS.、Arenga engleri-Macaranga tanarius ASS.、Cocculus orbiculatus -Pandanus odoratissimus ASS.、Cleyera japonica-Elaeocarpus sylvestris ASS.、Pistacia chinensis-Ficus microcarpa ASS..
These 17 associations are further combined into 10 alliances as following:1.Vitex rotundifolia ALL.2.Saccharum spontaneum ALL.3.Arundo formosana ALL.4.Leucaena leucocephala ALL.5.Broussonetia papyrifera-Macaranga tanarius ALL.6.Pandanus odoratissimus ALL.7.Casuarina equisetfolia ALL.8.Miscanthus sinensis ALL.9.Cleyera japonica-Elaeocarpus sylvestris ALL.10. Pistacia chinensis-Ficus microcarpa ALL. These categories are further tagged with four types of artificial landscape as in the following list number 11 to 14 and three types of nature landscape as in the following number 15 to 17. 11.artificial forest 12. cultivated lands 13. construction sites 14. roads and railroad 15.beach、riverbed 16.landslide site 17.river .
All those iterms were chosen to represent real vegetation map units in the areas survey conducted. The result indicates the vegetation of the Broussonetia papyrifera-Macaranga tanarius associationis the largest association which covers 53.62 hectares in the areas. As for the Leucaena leucocephala, the second largest association is about 45.38 hactares in the area. Both associations are respectively constituted 8.4％ and 7.1％ of total analytical areas. The result also indicates that the beach、riverbed landscape covers largest areas in the natural landscapes is about 181.53 hectares of the total investigated area while cultivated land is the largest in the total artificial landscape in the investigation. It is about 79.60 hectares. Both landscape areas are respectively counted as 28.6％ and 12.5％ of total analytical areas.
The results of the DCA analysis indicates that topographic is the key environmental factors that affects vegetation. The Taroko costal area is isolated by the steep landforms. The distribution of vegetation is also affected by the narrow sand beach under the cliff. so that the typical costal plants and vegetation were fewer, In addition, the interference from human activities were series.Therefore the artificial forest and cultivated lands have constituted a fairly large area while the nature vegetation in the secondary forest is full of the interfering pioneer species.
| Identifer | oai:union.ndltd.org:TW/095NHLTC587001 |
| Date | January 2006 |
| Creators | Mao-Chou Liao, 廖茂州 |
| Contributors | Hui-Chu Chang, 張惠珠 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 127 |
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