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題 名 | 應用遺傳規劃法建立櫻花鈎吻鮭魚群數量對環境之反應函數=Application of Genetic Programming to Establish the Environmental Response Function for Taiwan Salmon |
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作 者 | 童慶斌; 李宗祐; | 書刊名 | 農業工程學報 |
卷 期 | 49:3 2003.09[民92.09] |
頁 次 | 頁46-59 |
分類號 | 388.5 |
關鍵詞 | 生態系統; 生態模擬; 啟發式演算法; Ecosystem; Ecological modeling; Heuristic algorithm; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究結合了資料分類與遺傳規劃法建立櫻花鈎吻鮭魚群數量與河川溫度及流量的關係,櫻花鈎吻鮭是分佈在最低緯度之陸封型鮭魚,因此對其保育有極重要的生態意義。櫻花鈎吻鮭對於河川溫度非常敏感,且從未在超過水溫18℃的水域發現其蹤跡,七家灣溪是櫻花鈎吻鮭的主要生活棲地,但近年來已經有部分的河段水溫已經超過17℃;除此之外,洪水發生將魚群沖刷至下游因而導致死亡亦是魚群減少的主要因素。近年來的研究顯示,氣候變遷可能會使七家灣溪水溫升高並有流量增加的情形,因此建立河川溫度及流量與櫻花鈎吻鮭族群數量的關係成為了解環境因子改變對於魚群數量影響的重要依據。本研究在此提供一個較新的方法來模擬魚群數量,利用資料分類將魚群數量依溫度及流量的屬性劃分為四類,再利用遺傳規劃法優選每個分類下溫度與流量跟魚群數量的關係,結果顯示資料分類結合遺傳規劃的模式可合理用來模擬櫻花鈎吻鮭的數量。 |
英文摘要 | The genetic programming with data classification is proposed to identify the functions to project the effects of stream temperature and flood on Taiwan Salmon. Taiwan Salmon is the land locked species, which can be found in the lowest latitude in the world. Thus, it is an important indicator for Taiwan's ecological conservation. Taiwan Salmon is very sensitive to stream temperature, and can not exist with stream temperature higher than 18℃. The ChiChaWan Creek is the important habitat of Taiwan Salmon. Stream temperature more than 17℃ has been observed in some stream sections in recent years. Besides, it has also been observed that population of Taiwan Salmon is reduced significantly due to flood flushing them to downstream and causes death. Recent research suggests that climate change may result in higher stream temperature and increasing flood in Taiwan Salmon's habitat. Thus, it is very necessary to develop functions to describe the effects of stream temperature and flood on Taiwan Salmon's population. A new approach is proposed to identify the functions by using genetic programming with data classification. Data classification is applied to divide fish population into different categories according to magnitude of flood and temperature, and then genetic programming is utilized to develop functions for each category, respectively. The results indicate that the proposed approach can successfully develop functions to provide reasonable predictions of Taiwan Salmon's population based on given temperature and possible flood. |
本系統中英文摘要資訊取自各篇刊載內容。