滄海桑田---紅樹林區的生態變遷

屆次
2004年
科別
環境科學
學校名稱
嘉義市立北興國民中學
指導老師
張毓禎、徐宜廷
作者
林騰立、魯成岳
關鍵字
紅樹林,生態變遷
備註
柯達公司攝影獎

摘要或動機

雙春海濱公園五年前規劃?紅樹林栽培區,透過學校向管理單位\r
申請調查。經由兩位學姊的協助下和特有生物保育中心所提供的資\r
料,結合目前調查和測試結果,對紅樹林成長過程中所產生的環境和\r
動物相改變,能有更詳細的探討。\r
(一)、四種紅樹林品種以海茄苳成長最快繁殖力也比較強,其次是紅\r
海欖。\r
(二)、紅樹林的成長伴隨環境因素的改變:\r
1. 砂土的攔截堆積量明顯增加。\r
2. 土壤的酸性因種植的紅樹林品種而有所改變。\r
3. 水質由於指標生物的出現間接可知有所改善。\r
4. 枯枝落葉等有機質增加提供食物網的基層能量。\r
5. 河道縮減導致漲潮時潮水漫流到低漥處。\r
(三)、動物相的改變:\r
1. 以魚類魚苗、螺、貝和蟹類的種類和數量增加最明顯。\r
2. 養殖業中常出現的無脊椎寄生蟲數量增加,間接可以得知宿主\r
的數量也會有相對的增加。\r
3. 許多以往紅樹林調查未曾紀錄過的海鞘和星蟲均有新紀錄。\r
Shuang-chun Coastal Park is planned as the planting region of mangrove during\r
five years. The investigation is granted through our school’s application to the\r
authorities concerned. Through the assistance of two senior alumni and the\r
information offered by ESRI, combined with our investigation and the testing result,\r
we can conduct a more detailed discussion about the changing phases of the\r
environment and animals during the growing process of the mangrove.\r
(I) Of the four species of mangroves, Avicennia marina grows the fastest with\r
superior reproduction, and second comes Rhizophora mucronata.\r
(II) The growth of mangrove accompanying the factor in the change of the\r
environment:\r
1. The apparent increase in the sand piling\r
2. The variation of the soil acidity subject to the differences of mangroves\r
3. The quality of water is known to improve indirectly due to the existence of\r
target living things.\r
4. Withered twigs and fallen leaves form organic substances to offer the bottom\r
energy of the food chain.\r
5. The shrinkage of the river width leads to the overflowing of the low-lying area\r
when the tide is on the flow.\r
(III) The changes in the animal phase\r
1. The apparent increase in the species and number of fish fry, spiral shells, shells,\r
and crabs.\r
2. The increase in the spineless parasites existing in the aquaculture, indirectly\r
estimating the proportional increase in the hosts of the parasites.\r
3. A new record of tunicate and Sipunculus sp.,which were not recorded in the\r
past many mangrove investigations.\r
\r


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