# 夢幻湖到海邊，母蟹要過一條馬路

- URL: https://justfly.idv.tw/%e5%a4%a2%e5%b9%bb%e6%b9%96%e5%88%b0%e6%b5%b7%e9%82%8a%ef%bc%8c%e6%af%8d%e8%9f%b9%e8%a6%81%e9%81%8e%e4%b8%80%e6%a2%9d%e9%a6%ac%e8%b7%af/
- 日期: 2026-10-28
- 分類: 文化觀察
- 標籤: 公民科學, 台江, 台灣生態, 陸蟹

![護蟹情境AI插畫，非夢幻湖現場紀錄或物種辨識照片]
AI情境插畫；人物、道路、蟹體與光線均非現場紀錄，不作地景或物種辨識依據。 / AI illustration, not a field photograph or a guide to the site or species.

臺南市安南區城西里夢幻湖周邊的海岸林，住著必須到海邊釋幼的兇狠圓軸蟹。從棲地通往海邊，抱卵母蟹得經過青草崙防汛道路與堤防；[國家公園季刊的護蟹紀錄](https://www.taiwan.nps.gov.tw/home/zh-tw/quarterly/32861/9850.html)提到，途中有車流，也有堤防陡坡。

##### 頭燈照著的調查工作

季刊記錄的護蟹工作裡，志工戴頭燈、穿反光背心，分組在樣區尋找陸蟹，在背甲做記號以減少重複計數，再記錄性別、抱卵狀態、時間與數量。參與調查前須接受培訓；這些是報導中的工作方法，不能當成每一晚都相同的現場畫面。

兇狠圓軸蟹生活在海岸棲地，幼體卻需要海水中的生長階段。母蟹通往海邊的路線，也就成了監測與交通管制要照顧的地方。

##### 七梯次調查，三梯次交管

[內政部2026年10月8日公告](https://www.moi.gov.tw/News_Content.aspx?n=2&s=342505)列出，當年63位志工參與護蟹，累計動員411人次；七梯次監測記錄14,212隻兇狠圓軸蟹。三梯次交通管制期間，則保護9,308隻抱卵雌蟹繁殖遷徙。

七梯次的監測數與三梯次的抱卵雌蟹數，統計範圍不同，不能直接拿來推算整個族群的抱卵比例。411人次也不能換算成411個夜晚，或推定每次值勤都長達整晚。

公告並載明，台江國家公園管理處自2022年起辦理這項計畫，委託台灣濕地保護聯盟招募及培訓志工，投入監測、夜間巡護與交通管制，保安警察第七總隊第七大隊也參與護蟹。

##### 在道路上留出通往海邊的空間

[台灣濕地保護聯盟2023年的成果紀錄](https://www.wetland.org.tw/news/22/302)寫到，當年交管曾封閉園區內部分青草崙堤防防汛道路。配合季刊對遷徙路線的描述，可以看見交通管制所處理的具體問題：母蟹往海邊走的途中，會遇上人使用的道路。

從樣區裡逐筆記錄，到道路上的交通管制，護蟹工作要同時照顧調查與通行。夢幻湖周邊的海岸林提供棲地，通往海邊的道路則需要另一種分工。

##### 母蟹走過的路，還要繼續照顧

14,212隻是七梯次留下的監測紀錄，9,308隻是三梯次交管保護的抱卵雌蟹。回到夢幻湖周邊的林地與道路，這些數字各自對應著調查與守護，尚不足以證明整個族群增加了多少。

— 鄭佩玲

### From Menghuan Lake to the Sea, a Road for Mother Crabs to Cross

Near Menghuan Lake in Chengxi Village, Annan District, Tainan, egg-bearing land crabs leave coastal habitat for the sea. A [national parks quarterly report](https://www.taiwan.nps.gov.tw/home/zh-tw/quarterly/32861/9850.html) describes their route across the Qingcaolun flood-control road and up an embankment, with traffic among the hazards.

##### What the headlamps illuminate

The quarterly describes trained volunteers wearing headlamps and reflective vests, searching assigned plots and marking crab shells to reduce double counting. Records include sex, egg-bearing status, time and count. This describes reported methods, rather than an eyewitness account of every shift.

These coastal land crabs release young at sea, where the larvae develop before returning to land. The route to the water therefore matters to both monitoring and traffic control.

##### Seven surveys, three traffic-control rounds

The [Ministry of the Interior announcement dated 8 October 2026](https://www.moi.gov.tw/News_Content.aspx?n=2&s=342505) reports 63 volunteers and 411 volunteer attendances. Seven surveys recorded 14,212 crabs known locally as 兇狠圓軸蟹; three traffic-control rounds protected 9,308 egg-bearing females on their breeding migration.

The survey count and the protected-female count cover different scopes. They do not establish the egg-bearing proportion of the whole population. Nor do 411 attendances mean 411 nights or full-night shifts.

The announcement dates the program to 2022. Taijiang National Park commissions the Taiwan Wetland Conservation Union to recruit and train volunteers for monitoring, night patrols and traffic control, with support from the Seventh Brigade of the Seventh Special Police Corps.

##### Making room on a road to the sea

A [2023 record published by the wetland conservation organization](https://www.wetland.org.tw/news/22/302) describes closing parts of the Qingcaolun embankment road during traffic control that year. Together with the quarterly’s account of the route, it shows where human road use intersects with crab migration.

Recording crabs in survey plots and managing road traffic address different parts of the same route. Coastal woodland provides habitat; safe passage toward the sea requires work beyond it.

##### The route still needs care

The 14,212 survey records and 9,308 protected egg-bearing females describe different parts of that work around Menghuan Lake. They do not by themselves establish how much the entire population has grown.

— 鄭佩玲