鎮(zhèn)遠舞陽河桃花水母的探究-evergreeneducation

1、鎮(zhèn)遠舞陽河桃花水母的探究Exploring the freshwater jellyfish in Wuyang River, Zhenyuan county,,鎮(zhèn)遠文德中學 田政琴Zhenqin Tian, Wende Middle School, Zhenyuan county,背景 Background,距離縣城向西約15公里處，有國家級風景名勝區(qū)——舞陽河。河中發(fā)現(xiàn)桃花水母，它被稱為生物進化研究的“活化石”，是一種淡水

2、水母，是地球上原始、低等的無脊椎腔腸動物，它以“水母體——水螅體——水母體”世代交替的生命形式存在,記錄著地球生命發(fā)展歷程。據(jù)了解，在我國每年都能觀賞到淡水水母的，就唯有貴州省鎮(zhèn)遠縣舞陽河風景區(qū)。因此我們產(chǎn)生了濃厚的興趣，于是開展了這一探究課題。 15 miles west of Zhenyuan county, Guizhou Province lies the national scenic spot- Wuyang Riv

3、er, the only place nationwide that you can expect the freshwater jellyfish on a yearly basis. Freshwater jellyfish, nicknamed “the living fossil”, is a low-form Coelenterate alternates its life form between jellyfish and

4、 hydra for generations, recording the development of the living of earth. It fascinates us a lot so we carried out a research,探究過程 Steps of Research,查閱資料： Literature Reviewing調查走訪： Investigation實地考察：Field Visit采集樣本回學校

5、觀察： Specimen Collecting and Study結果分析討論：Discussion & Analysis撰寫論文：Essay Writing,調查走訪 Collect Data,實地考察 Field Visit,實地考察 Field Visit,實地考察 Field Visit,采集樣本 Specimen Collecting,在校探究 Experiments at s

6、chool,桃花水母的生存環(huán)境 Environment,出現(xiàn)的時間 Time of Appearance,水質 Water Quality,2010：在7月至8月下旬出現(xiàn)，是近幾年出現(xiàn)最短的，且每天在13:00—16:00上浮。Freshwater jellyfish floated everyday from 13:00-16:00pm, in July and late August. The period stands as th

7、e shortest in recent years2012：在6月至11月初（至今）仍然大量出現(xiàn)，據(jù)調查所知，是近10年出現(xiàn)最多，時間最長的一年。Bloom from June to the closing of the report. The longest appearance of the last decade,人為痕跡少，弱酸性水質。PH為6.0-7.0之間Rarely trodden, weak acid water

8、body, PH ≈ 6.0-7.0,水流：,水溫：,光照：,水深：,約25 oC—32 oC,天氣晴朗，光照好才見上浮,約0.5-5米,Water Temperature: around 25 oC—32 oC,Lightening: Float only in sunny days with abundant light,Depth of Water: from around 0.5 -5 meters,Speed of flow:

9、 Slow speed, around 0.1m/s on the surface,在探究過程中出現(xiàn)很多困難和不足之處。如：器材不全，導致測量水深、水溫和水的污染程度有所誤差，另外，無法制作標本。而今年11月份出現(xiàn)的水母之多，可用“爆發(fā)”兩個字來形容，有人問這是否是一種“污染”，或是污染導致的結果，待續(xù)研究。 We confronted difficulties and imperfections like ins

10、ufficient equipments and inability to make samples, resulting in water temperature, depth and pollution measuring error. On the other side, the explosion in number of freshwater jellyfish this November leaves us ponderin

11、g if it’s a pollution, or a result of pollution. Research is to be continued.,總而言之，對生命個體的探究，其目的是：從不同的角度發(fā)現(xiàn)生物體生活習性，揭示生命的生活規(guī)律或起源，為其他事業(yè)（醫(yī)、藥、文、衛(wèi)）提供理論基礎 。同時，在探究過程中也給學生帶來樂趣，有助于他們對大自然的熱愛，為今后的學習和成長帶來很大的幫助。 In a word, the

12、 aim of exploring a creature is to discover its characters in multiple ways, revealing the law or origin of life, thus founding a theoretical basis serving other purposes like medicine, drugs, culture or health. Meanwhil