碩士 / 國立中興大學 / 水土保持學系 / 87 / This study is experimented in the native-tree garden of Huisun Experimental Forest in Guoshing in Nantou County. The weather type of this area is warm heavy-humid type with average temperature 21℃ and average relative humidity 80%. We select ten dominant tree species to measure their leaf photosynthesis and transpiration. Four of them were chosen to probe into the relationships among photosynthetic gas exchange rate and measured meteorological factors. Results were summarized as follows:
1.Formosan Ash had the highest net photosynthetic rate in ten tested species and Ring-cupped Oak was the lowest. Net photosynthetic rates of Laurel family species were higher than those of Beech family species. Leaf conductance and transpiration rate showed the same results. The seasonal variation of the photosynthetic rate for the species of Nanto Actinodaphne and Incense Nanmu were lowest, but that for the species of Formosan Apple, Chinese Cork Oak and Formosan Nato Tree were highest. The seasonal variations of water use efficiency (WUE) for ten tested plants were low. The WUE of Laurel family species were higher than that of Beech family species.
2.In the analysis of the relationships among photosynthetic gas exchange rate, the VPD had negative significant correlation with net photo-synthetic rate and leaf conductance. The VPD had positive significant correlation with transpiration rate. The PPFD and leaf temperature had low correlation with net photosynthetic rate and leaf conductance but positive significant correlation with transpiration rate.
3.In the analysis of the relationships among net photosynthetic rate and stomatal respondence, the net photosynthetic rate increase with leaf conductance and showed positive significant correlation. The leaf conductance had positive significant correlation with non-stomatal factor (Ci/Ca) besides Incense Nanmu. The effect between net photosynthetic rate and stomatal factor was small.
4.The leaf number and net photosynthetic had low correlation among the tested plants except Nanto Actinodaphne. The SPAD and net photo-synthetic also had low correlation among all the tested plants.
| Identifer | oai:union.ndltd.org:TW/087NCHU0080009 |
| Date | January 1999 |
| Creators | Tang, Iaw-tzu, 湯曜滋 |
| Contributors | Lin, Shin-hwei, 林信輝 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 54 |
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