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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 韓玉山 | |
dc.contributor.author | Jian-Ze Chen | en |
dc.contributor.author | 陳健澤 | zh_TW |
dc.date.accessioned | 2021-05-16T16:19:53Z | - |
dc.date.available | 2015-08-14 | |
dc.date.available | 2021-05-16T16:19:53Z | - |
dc.date.copyright | 2013-08-14 | |
dc.date.issued | 2013 | |
dc.date.submitted | 2013-08-07 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/6038 | - |
dc.description.abstract | 日本鰻是日本、韓國、台灣及中國重要養殖魚種,目前養殖業者的鰻苗完全仰賴漁民在河口捕撈。然而其資源量從1970年代以後急遽下降;且近年來因各國都市及工業不斷擴張,而使鰻魚的自然棲地受到嚴重的破壞。本研究擬探討從1970至2010年代,東亞四國日本鰻棲地改變的情形,與鰻魚長期資源量相互比較,觀察是否有所關聯性。
本研究實驗方法使用衛星遙測技術,將其應用在土地覆蓋之改變(Land Cover Change, LCC).衛星遙測技術是一項分析時間空間改變有效率的工具,它可以大範圍紀錄古今的地理樣貌,以提高效率以及精準度以利實驗分析。而本研究區域是從東亞四國中,各選定四條主要鰻苗捕撈河川,藉由USGS下載各河川衛星照片後,再由Arc GIS分析其棲地改變之情形。結果顯示,日本在1970至2010年代當中,河川天然棲地長度減少21%,天然面積減少27%,棲地品質指數(habitat quality index, HQI) 減少6%;韓國,天然棲地長度減少46%,天然面積減少57%,HQI減少29%;台灣,天然棲地長度減少22%,天然面積減少53%,HQI減少50%;中國,天然棲地長度減少76%,天然面積減少81%, HQI減少25%。在鰻苗長期資源量方面,日本官方平均年產量在1970年代為80.6噸,1990年代為35.9噸,而近5年來為6.6噸,資源量在1970年代至現今減少92%;而根據福隆當地漁民資料,1984~1995年間,年平均總產量334096隻,而2007~2013年間,年平均總產量14190隻,資源量從1970年代至今減少達96%。 結論而言,東亞地區在1970到2010年代,天然棲地總長度減少47%,天然棲地總面積減少81%,HQI減少25%。與鰻苗資源量官方統計減少92%及福隆當地漁民統計減少96%相互比較,鰻苗資源量應受到棲地破壞而減少。 | zh_TW |
dc.description.abstract | The Japanese eel is an important aquaculture species in Japan, Korea, Taiwan and China. At present the only source of glass eels needed by fish farmers comes solely from the catches made by fishermen at river mouths. However eel stocks have been in rapid decline since the 1970s. Furthermore with urbanization and constant expansion of industrialization in various countries, the natural habitat of eels have been severely damaged. The aim of this study is to discuss the relationship between habitat changes in the four East Asian countries and the long-term eel stock size from the 1970s to the early 2010s.
The method of this study is using satellite remote sensing on land cover change (LCC). Satellite remote sensing is an efficient tool for analyzing temporal and spatial changes as it could record geographical features on a large geographical scales over times to enhance efficiency and accuracy to facilitate data analysis. Present study focus on four major eel-catching rivers in each of the four East Asian countries. Then satellite images of those rivers were downloaded from the USGS website and fed to ArcGIS to analyze the condition of habitat change in each of them. The result of this study shows that in the period of 1970s~2010s in Japan, the length of natural habitats in the rivers decreased by 21%, loss of natural areas is 27%, and the habitat quality index, (HQI) decreased by 6%. In Korea, the length of natural habitats in the rivers decreased by 46%, the loss of natural areas is 57%, and the HQI decreased by 29%. In Taiwan, the length of natural habitats in the rivers decreased by 22%, the loss of natural areas is 53%, and the HQI decreased by 50%. In China, the length of natural habitats in the rivers decreased by 76%, the loss of natural areas is 81%, and the HQI decreased by 25%. In terms of long-term glass eel stock sizes, Japanese official data shows 80.6 tons of annual production in the 1970s, 35.9 tons in the 1990s and in the recent 5 years it is 6.6 tons. The eel stock size decreases by 92% from the 1970s to the present day. According to local fisherman in Fulung, eel stock data in the period of 1984~1995, the mean annual catch of glass eels is 334096, however, in the period of 2007~2013, the total number of glass eels is 14190 on average per year and the stock size decreases by 96% from the 1970s to the present day. In summary, in East Asia from the 1970s to the 2010s, the total length of natural habitats decreased by 47%, the loss of total natural habitats is 81%, and the HQI decreased by 25%. Compared with the official eel stock decrease of 92% in Japan, and local fisherman data of a decrease of 96% in Fulung, this shows eel stock size decline should be related to habitat loss. | en |
dc.description.provenance | Made available in DSpace on 2021-05-16T16:19:53Z (GMT). No. of bitstreams: 1 ntu-102-R00b45027-1.pdf: 8997326 bytes, checksum: b98a26b2f08769100f29c9568a74e02b (MD5) Previous issue date: 2013 | en |
dc.description.tableofcontents | Contents
中文摘要 i Abstract iii Contents v Figure legend viii Table contents xi Introduction 1 Materials and methods 6 Study area 6 Landscape image collection and processing 6 Remote sensing image classification 7 Eel resource data 8 Result 9 Remote sensing image 9 Japan 9 Ten-ryu River (天龍川) 9 Ohyodo River (大淀川) 10 Ni-yodo River (仁淀川) 10 To-ne River (利根川) 11 Korea 12 Han River (漢江) 12 Geum River (錦江) 12 Yeongsan River (榮山江) 13 Nakdong River (洛東江) 14 Taiwan 14 Danshui River (淡水河) 14 Lanyang River (蘭陽溪) 15 Zhuoshuei River (濁水溪) 16 Kaoping River (高屏溪) 17 China 17 Minjiang River (閩江) 17 Pearl River (珠江) 18 Qiantang River (錢塘江) 19 Yangtze River (長江) 19 Eel resource data 20 Discussion 22 Eel catch data 22 Habitat quality index, HQI 23 The long term habitat change in East Asia 23 Habitat destruction 24 The other factors of eel resource decline 26 Conclusion 30 References 31 Figure legend Fig.1 The artificial buildings of habitat destruction dam (a), aquaculture zone (b), harbor r(c), riverbank (d). 40 Fig.2 The four main rivers catching eel area in Japan; Ten-ryu River (天龍川), Ohyodo River (大淀川), Ni-yodo River (仁淀川), and To-ne River (利根川) 42 Fig.3 The four main rivers catching eel area in Korea; Han River (漢江), Geum River (錦江), Yeongsan River (榮山江) and Nakdong River (洛東江) 43 Fig.4 The four main rivers catching eel area in Taiwan; Danshui River (淡水河), Lanyang River (蘭陽溪), Zhuoshuei River (濁水溪) and Kaoping River (高屏溪) 44 Fig.5 The four main rivers catching eel area in China; Minjiang River (閩江), Pearl River (珠江), Qiantang River (錢塘江) and Yangtze River (長江) 45 Fig.6 The Ten-lyu River (天龍川) of Japan 1970s(A) 1990s(B) 2010s(C) 46 Fig.7 The Ohyodo River (大淀川) of Japan 1970s(A) 1990s(B) 2010s(C) 47 Fig.8 The Ni-yodo River (仁淀川) of Japan 1970s(A) 1990s(B) 2010s(C) 48 Fig.9 The To-ne River (利根川) of Japan 1970s(A) 1990s(B) 2010s(C) 49 Fig.10 The Han River (漢江) of Korea 1970s(A) 1990s(B) 2010s(C) 50 Fig.11 The Geum River (錦江) of Korea 1970s(A) 1990s(B) 2010s(C) 53 Fig.12 The Yeongsan River (榮山江) of Korea 1970s(A) 1990s(B) 2010s(C) 54 Fig.13 The Nakdong River (洛東江) of Korea 1970s(A) 1990s(B) 2010s(C) 55 Fig.14 The Dansuie River (淡水河) of Taiwan 1970s(A) 1990s(B) 2010s(C) 56 Fig.15 The Lanyang River (蘭陽溪) of Taiwan 1970s(A) 1990s(B) 2010s(C) 59 Fig.16 The Zhuoshuei River (濁水溪) of Taiwan 1970s(A) 1990s(B) 2010s(C) 62 Fig.17The Kaoping River (高屏溪) of Taiwan 1970s(A) 1990s(B) 2010s(C) 65 Fig.18 The Minjiang River (閩江) of China 1970s(A) 1990s(B) 2010s(C) 66 Fig.19 The Pearl River (珠江) of China 1970s(A) 1990s(B) 2010s(C) 69 Fig.20 The Qiantang River (錢塘江) of China 1970s(A) 1990s(B) 2010s(C) 70 Fig.21 The Yangtze River (長江) of China 1970s(A) 1990s(B) 2010s(C) 71 Fig.22 The bar chart of four Japanese rivers nature length (A),area (B) and HQI (C) in 1970, 1990 and 2010; four Japanese rivers total HQI value in 1970, 1990 and 2010 (D) 72 Fig.23 The bar chart of four Korean rivers nature length (A),area (B) and HQI (C) in 1970, 1990 and 2010; four Japanese rivers total HQI value in 1970, 1990 and 2010 (D) 74 Fig.24 The bar chart of four Taiwan rivers nature length (A),area (B) and HQI (C) in 1970, 1990 and 2010; four Japanese rivers total HQI value in 1970, 1990 and 2010 (D) 76 Fig.25 The bar chart of four China rivers nature length (A),area (B) and HQI (C) in 1970, 1990 and 2010; four Japanese rivers total HQI value in 1970, 1990 and 2010 (D) 78 Fig.26 The bar chart of East Asia four countries HQI value in 1970, 1990 and 2010 80 Fig.27 The eel resource run chart of Japan 81 Fig.28 The eel resource run chart of Korea 82 Fig.29 The eel resource run chart of Taiwan 83 Fig.30 The eel resource run chart of China 84 Fig.31 the eel resource run chart of Fulung 85 Table contents Table 1 The historical Landsat data path/row of Taiwan. 86 Table 2 The historical Landsat data path/row of Japan. 87 Table 3 The historical Landsat data path/row of Korea. 89 Table 4 The historical Landsat data path/row of China. 90 Table 5 the four countries eel resource official data during 1970s to 2010s 92 Table 6 the Fulung eel resource data during 1980s to 2010s 94 Table 7A The nature habitat and artificial building length and area of Ten-lyu River (天龍川) of Japan 96 Table 7B The percentage of HQI value of Ten-lyu River (天龍川) of Japan 96 Table 8A The nature habitat and artificial building length and area of Ohyodo River (大淀川) of Japan 97 Table 8B The percentage of HQI change value of Ohyodo River (大淀川) of Japan 97 Table 9A The nature habitat and artificial building length and area of Ni-yodo River (仁淀川) of Japan 98 Table 9B The percentage of the HQI change value of Ni-yodo River (仁淀川) of Japan 98 Table 10A The nature habitat and artificial building length and area of To-ne River (利根川) of Japan 99 Table 10B The percentage of the HQI change value of To-ne River (利根川) of Japan 99 Table 11A The nature habitat and artificial building length and area of Han River (漢江) of Korea 100 Table 11B The percentage of the HQI change value of Han River (漢江) of Korea 100 Table 12A The nature habitat and artificial building length and area of Geum River (錦江) of Korea 101 Table 12B The percentage of the HQI change value of Geum River (錦江) of Korea 101 Table 13A The nature habitat and artificial building length and area of Yeongsan River (榮山江) of Korea 102 Table 13B The percentage of the HQI change value of Yeongsan River (榮山江) of Korea 102 Table 14A The nature habitat and artificial building length and area of Nakdong River (洛東江) of Korea 103 Table 14B The percentage of the HQI change value of Nakdong River (洛東江) of Korea 103 Table 15A The nature habitat and artificial building length and area of Dansuie River (淡水河) of Taiwan 104 Table 15B The percentage of the HQI change value of Dansuie River(淡水河) of Taiwan 104 Table 16A The nature habitat and artificial building length and area of Lanyang River (蘭陽溪) of Taiwan 105 Table 16B The percentage of the HQI change value of Lanyang River (蘭陽溪) of Taiwan 105 Table 17A The nature habitat and artificial building length and area of Zhuoshuei River (濁水溪) of Taiwan 106 Table 17B The percentage of the HQI change value of Zhuoshuei River (濁水溪) of Taiwan 106 Table 18A The nature habitat and artificial building length and area of Kaoping River (高屏溪) of Taiwan 107 Table 18B The percentage of the HQI change value of Kaoping River (高屏溪) of Taiwan 107 Table 19A The nature habitat and artificial building length and area of Minjiang River (閩江) of China 108 Table 19B The percentage of the HQI change value of Minjiang River (閩江) of China 108 Table 20A The nature habitat and artificial building length and area of Pearl River (珠江) of China 109 Table 20B The percentage of the HQI change value of Pearl River (珠江) of China 109 Table 21A The nature habitat and artificial building length and area of Qiantang River (錢塘江) of China 110 Table 21B The percentage of the HQI change value of Qiantang River (錢塘江) of China 110 Table 22A The nature habitat and artificial building length and area of Yangtze River (長江) of China 111 Table 22B The percentage of the HQI change value of Yangtze River (長江)of China 111 Table 23 The eel resource in 1970s, 1990s and 2010s (A) and the percentage of the eel resource change value (B) of Japan 112 Table 24 The eel resource in 1970s, 1990s and 2010s (A) and the percentage of the eel resource change value (B) of Taiwan 113 Table 25 The eel resource in 1970s, 1990s and 2010s (A) and the percentage of the eel resource change value (B) of Korea 114 Table 26 The eel resource in 1970s, 1990s and 2010s (A) and the percentage of the eel resource change value (B) of China 115 Table 27 The eel resource of year average in 1984~1995 and 2006~2013 (A) and the percentage of the eel resource change value (B) of Fulung 116 Table 28 The percentage of the HQI change value of Japan 117 Table 29 The percentage of the HQI change value of Korea 118 Table 30 The percentage of the HQI change value of Taiwan 119 Table 31 The percentage of the HQI change value of China 120 Table 32 The percentage of the HQI change value of East Asia 121 | |
dc.language.iso | en | |
dc.title | 利用衛星遙測技術研究近40年來棲地破壞對日本鰻資源量的影響 | zh_TW |
dc.title | Study of the relationship between Anguilla japonica resource and habitat destruction by satellite remote sensing in the past 40 years | en |
dc.type | Thesis | |
dc.date.schoolyear | 101-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 廖一久,王佳惠,黃祥麟 | |
dc.subject.keyword | 棲地破壞,日本鰻,衛星遙測技術,東亞四國,鰻魚資源量, | zh_TW |
dc.subject.keyword | habitat destruction,Japanese eel,satellite remote sensing,East Asia four countries,eel stock size, | en |
dc.relation.page | 121 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2013-08-07 | |
dc.contributor.author-college | 生命科學院 | zh_TW |
dc.contributor.author-dept | 漁業科學研究所 | zh_TW |
顯示於系所單位: | 漁業科學研究所 |
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