1. 關(guān)于海洋生態(tài)的論文
海洋生物學(marine biology)是研究海洋中生命現(xiàn)象,、過程 及其規(guī)律的科學,,是海洋科學的一個主要學科,也是生海洋生物學是一門綜合性交叉學科,,主要包括海洋有機體的功能,,海洋生物多樣性和生態(tài)三個方面的內(nèi)容,。
它是研究海洋中生命有機體的起源,分布,,形態(tài)和結(jié)構(gòu),,進化與演替的特征和生物生命過程的活動規(guī)律;探索海洋生物之間和生物與其所處的海洋環(huán)境之間的相互作用和相互影響的科學,。
2. 關(guān)于海洋生態(tài)的論文怎么寫
海洋是地球的主體,、生命的搖籃、人類文明的源泉,。地球表面分屬為陸地和海洋,。如以大地水準面為基準,陸地面積占地表總面積的29.2%,;海洋面積占地表總面積的70.8%,。海陸面積之比為2.5:1。世界大洋通常被分為四大部分,,即太平洋,、大西洋、印度洋和北冰洋,。浩瀚的海洋蘊藏著十分豐富的海洋生物資源,,有人推算,海洋向人類提供食物的能力,,相當于全世界陸地耕地面積所提供食物的1000 倍,。
3. 關(guān)于海洋生態(tài)文明建設(shè)的論文
我國既是陸權(quán)大國,也是海洋大國,。海洋安全了,,陸權(quán)才有保障。所以我國一定加強海洋國防建設(shè),,保證國家和人民的生活安全,。
4. 海洋生態(tài)系統(tǒng)論文
媽祖崇拜與海洋文化發(fā)展的關(guān)系 :
媽祖與海洋文化發(fā)展的關(guān)系 中國沿海各省包括臺灣,百姓皆以海事為他們工作的主軸,頻繁的海事活動使中國人真正認識到大海的偉大,從心理產(chǎn)生了崇拜海洋的.情結(jié),這種感情抒發(fā)于信仰領(lǐng)域,便成了航海保護神的崇拜--媽祖信仰.媽祖信仰早期的傳播,發(fā)生在湄洲島對面的大陸沿岸,傳播的主要力量來自民間.福建概分為內(nèi)陸山地和沿海平原兩個區(qū)域,沿海狹長的平原可以視為四個由山脈走向形成的河流流域分割開的四部分,除了海上的交通之外,水系提供了福建省內(nèi)運輸網(wǎng)的支架,而媽祖信仰就是因為莆田海濱海域的有效開發(fā),媽祖的信仰才逐漸伸展,而演變成至今的國際性、傳統(tǒng)性的民間信仰.
5. 海洋生態(tài)環(huán)境保護論文
Pollution
Sea pollution is becoming an increasing problem for our planet and we have a responsibility to reduce sea pollution.
I need to describe the problem. Our ship currently dumps all its rubbish into the sea.It's easy to result in huge endanger. First of all, Non-organic substances such as plastic bags kill fish and whales. Because fish get trapped and whales cannot digest them. Secondly some rubbish is inherently toxic.
I can suggest some solutions. First and foremost we can create a better system of disposing of rubbish for instance. We ought to store rubbish. Next, we are supposed to make ships environmentally and friendly. A case in point is that we should stop providing plastic bags.
We must act now before it is too late!
海洋污染英語作文二:Reduce Sea Pollution
Several problems are caused by the non-organic substance. We ought not to pour wastes into the ocean, because it not only pollutes the ocean, but also lead to a series of harmful consequence. First and foremost, the non-organnic things, for instance, plastic bags, may kill fish and whales. Second, fishes can't digest them. Finally, some of the rubbish is inherently toxic, they will posion marine life.
We must take actions to protect our whale from dying. One thing we should do is creating a better system of disposing of rubbish. Another effective solution is making ships environmentally friendly. Sypermarkets shall stop the giving of plastic bags.
As a captain of the ship, you should spare no efforts to think more helpful ideas and stop dumping rubbish from now on. We all need to raise awareness of these problems. It now becomes necessary that we must act now, before it is too late!
海洋污染英語作文三:Sea pollution
Between 75 and 80% of marine pollution is caused by land, particularly agriculture. 30% of this is from the atmosphere. Around 12% of the pollution is caused by maritime transport.
In South America, 98% of domestic wastewater ends up, untreated, in the sea. The countries along the Mediterranean Sea throw 50 million tons of waste into it every year and the Chinese throw 60 million tons of waste into the Yellow sea daily. Over half of the hydrocarbon discharge comes from continents, 5% comes from oil tanker accidents, 20% comes from waste and other ship-related accidents, 4% from sea exploitation and 11 to 15% is due to natural causes. Accidental pollution through hydrocarbon is significantly decreasing and only represents a small percentage of waste through degassing estimated at between 1.5 and 3 million tons of oil a year. In 2003, according to the WWF, between 0.7 and 1.3 million tons of oil were spread by degassing in the Mediterranean. According to the Ifremer (the French Institute for Exploitation of the Sea), coastal water pollution cost the world economy almost 12.8 billion dollars in 2006.
Marine pollution is the result of products being thrown into seas and oceans, mostly by mnkind: domestic waste (sewage and rubbish, pollutants in runoff water...), industrial waste (hydrocarbons, metals, synthetic chemical and organic substances, radionuclides...) and agricultural waste (fertilisers, pesticides...).
This includes water pollution and marine sediments, and more generally all damage to marine ecosystems caused by harmful substances being discharged into the sea, either by their nature or their quantity.
海洋污染英語作文四:Sea Pollution
Marine environment is one in water, seawater tolerance hydrolyzate and suspended solids, seabed sediment and marine organisms, including complex systems. Ocean rich biological resources, mineral resources, chemical resources and power resources is an indispensable resource treasure house of human beings, with human survival and development of the relationship very close.
The main objective of the current marine conservation is to protect the living marine resources, so as not to failure, in order for human sustainable use. In particular, give priority to protect those valuable and critically endangered marine life. According to the UN for investigation, due to overfishing, accidental capture and killing of non-target to allow hunting of marine, coastal shoreline construction, mangrove deforestation, widespread marine pollution, at least the world's 25 most valuable fishery resources depleted, whales, sea turtles, manatees and many other marine animals face extinction risk. Is expected that with the expansion of the scale of ocean development,Marine living resources are likely to cause more damage.
The task of the first marine protected right to stop over-exploitation of living marine resources and secondly to protect the habitat of marine life or habitat, in particular, their migration, spawning, foraging, avoiding predators coast, tidal flats, estuaries, coral reefs, it is necessary to prevent the heavy metals, pesticides, oil, organic and easy to produce nutrients such as eutrophication of marine pollution. Preservation of the marine living resources of the natural regeneration capacity and water purification capacity, preservation of the marine ecological balance, to ensure sustainable human development and utilization of the oceans.
海洋污染英語作文五:Polluting the seas
The seas and oceans receive the brunt of human waste, whether it is by deliberate dumping or by natural run-off from the land.
In fact over 80% of all marine pollution comes from land-based activities and many pollutants are deposited in estuaries and coastal waters. Here the pollutants enter marine food chains, building up their concentrations until they reach toxic levels. It often takes human casualties to alert us to pollution and such was the case in Minimata Bay in Japan when many people died as a result of a pollutant building up in food chains. A factory was discharging waste containing methyl mercury in low concentrations into the sea and as this pollutant passed through food chains it became more concentrated in the tissues of marine organisms until it reached toxic levels.
As a consequence 649 people died from eating fish and shellfish contaminated with mercury and 3500 people suffered from mercury poisoning.
海洋污染英語作文六:Sea Pollution
From the overall situation, wastewater emissions growth speed. Is expected in 2000 will reach 666 tons. City life sewage volume will continue to increase, in 2000 reached about 783 tons. The wastewater of low (estimated at 20% ~ 30%),most of untreated wastewater directly or indirectly discharged into the water body, the serious pollution of water resources. China's seven major river systems in nearly half of serious pollution, city section of river water qualitygenerally exceed the standard 86%. The polluted water, more serious is the Huaihe, Haihe, Liaohe, Songhua River, the downstream Yangtze River and the Pearl River Delta industries in developed region.
River city section of riverpollution, heavy on the river, north to south. In 1990, 94 river city section of evaluation, 65 are subject to different degrees of pollution, accounting for 69.1%, the main pollutants ammonia nitrogen, volatile phenol and oxygen consumption of organic matter. According to the survey, 700000000 peopledrinking water the Escherichi a coli exceed the standard, 164000000 people drink organic pollution of water, 35000000 people nitrate drinking water exceed the standard.
Huaihe is one of the most polluted rivers. Huaihe in the evaluation of the 2000kilometers of the river, 78.7% river does not meet the drinking water standard,the 79.7% section does not meet the standard of fishery water, 32% do not meet the standard of irrigation water. According to statistics, the national 3000 heavily polluting enterprises, enterprises of wastewater discharge of industrial pollution,Huaihe River Basin accounts for 160. A sewage units 1.55 182 towns within the basin, industrial wastewater emissions of 1610000000 cubic meters, 700000000 cubic meters of urban living water emissions. Huaihe sewage irrigation farmland,causing serious crop production; in 1989 the occasion of the Spring Festival, the sewage discharge upstream gate opening, the tap water in Huainan, Bengbu twocity is seriously polluted and not drinking, Huaihe basin, the public drinking watercrisis, people Voices of discontent.
Huaihe basin in many areas of cancer incidence rate than the normal area than 10 times to hundreds of times, some villages in 2/3 of hepatomegaly. At the same time, due to the pollution of the estuary, anadromous fish resources has been damaged, the sharp drop in output, part of the in
6. 海洋生態(tài)學論文
首先,水是任何生物體都不可缺少的重要組成成分,,生物體的含水量一般為60~80%,,有些生物可達90%以上(如水母、蝌蚪等),,從這個意義上說,,沒有水就沒有生命。其次,,生物的一切代謝活動都必須以水為介質(zhì),,生物體內(nèi)營養(yǎng)的運輸、廢物的排除,、激素的傳遞以及生命賴以存在的各種生物化學過程,,都必須在水溶液中才能進行,而所有物質(zhì)也都必須以溶解狀態(tài)才能出入細胞,,所以在生物體和它們的環(huán)境之間時時刻刻都在進行著水交換,。 各種生物之所以能夠生存至今,都有賴于水的一種特性,,即在3.98℃時密度最大,。水的這一特殊性質(zhì)使任何水體都不會同時全部凍結(jié),當水溫降到 3.98℃以下時,,冷水總是在水體的表層而暖水在底層,,因此結(jié)冰過程總是從上到下進行,這對歷史上的冰河時期和現(xiàn)今寒冷地區(qū)生物的生存和延續(xù)來說是至關(guān)重要的,。此外,,水的熱容量很大,,而且吸熱和放熱是一個緩慢的過程,,因此水體溫度不像大氣溫度那樣變化劇烈,也較少受氣溫波動的影響,,這樣,,水就為生物創(chuàng)造了一個非常穩(wěn)定的溫度環(huán)境。 生物起源于水環(huán)境,,生物進化90%的時間都是在海洋中進行的,。生物登陸后所面臨的主要問題是如何減少水分蒸發(fā)和保持體內(nèi)的水分平衡。至今,,完全適應(yīng)在干燥陸地生活的只有像高等植物,、昆蟲、爬行動物,、鳥類和哺乳動物這樣一些生物,,因為它們的表皮和皮膚基本是干燥和不透水的,而且在獲取更多的水,、減少水的消耗和貯存水三個方面都具有特殊的適應(yīng),。水對陸生生物的熱量調(diào)節(jié)和熱能代謝也具有重要意義,,因為蒸發(fā)散熱是所有陸生生物降低體溫的最重要手段。
7. 關(guān)于海洋生態(tài)的論文選題
1,、方宗熙(1912年~1985年)
福建云霄人,,我國海藻遺傳育種工作的主要開創(chuàng)者和奠基人。
2,、毛漢禮(1919年~1988年 )
浙江諸暨人,,物理海洋學家,我國物理海洋學奠基人之一,。
3,、朱元鼎(1896年~1986年)
浙江鄞縣人,魚類學家和水產(chǎn)教育家,,中國魚類分類學主要奠基人,。
4、朱樹屏(1907年~1976年)
山東昌邑人,,海洋生態(tài)學家,、水產(chǎn)學家和教育家,是中國海洋生態(tài)學,、水產(chǎn)學及湖沼學研究的先驅(qū)和奠基者,。
5、劉恩蘭(1905年~1986年)
山東安丘人,,地理學家,,我國第一位女海洋學家,中國海洋地理學的創(chuàng)始者之一,。
6,、劉光鼎(1929年~2018年)
山東蓬萊人,海洋地質(zhì),、地球物理學家,。
7、劉瑞玉(1922年~2012年)
河北樂亭人,,海洋生物學和甲殼動物學家,,中國海洋底棲生物生態(tài)學奠基人之一。
8,、任美鍔(1913年~2008年)
浙江寧波人,,地貌學家、海洋地質(zhì)學家,。
9,、汪德昭(1905年~1998年)
江蘇灌云人,物理學家、我國水聲事業(yè)奠基人,。
10,、吳寶鈴(1925年~1998年)
遼寧綏中人,海洋生物學家,,第一位考察北極的中國科學家,。
8. 關(guān)于海洋生態(tài)的問題
如果污染超過了海洋生態(tài)系統(tǒng)的自我調(diào)節(jié)能力或者說自凈能力,它就很難恢復到原來的狀態(tài),。
生態(tài)系統(tǒng)保持自身穩(wěn)定的能力被稱為生態(tài)系統(tǒng)的自我調(diào)節(jié)能力,。生態(tài)系統(tǒng)自我調(diào)節(jié)能力的強弱是多方因素共同作用體現(xiàn)的。一般地:成分多樣,、能量流動和物質(zhì)循環(huán)途徑復雜的生態(tài)系統(tǒng)自我調(diào)節(jié)能力強,;反之,結(jié)構(gòu)與成分單一的生態(tài)系統(tǒng)自我調(diào)節(jié)能力就相對更弱,。熱帶雨林生態(tài)系統(tǒng)有著最為多樣的成分和生態(tài)途徑,,因而也是最為穩(wěn)定和復雜的生態(tài)系統(tǒng),北極苔原生態(tài)系統(tǒng)由于僅地衣一種生產(chǎn)者,,因而十分脆弱,,被破壞后想要恢復便需花費很大代價。