ecosystem英語presentation

1、By JaneEcosystem Ecosystem 生態(tài)系統(tǒng)生態(tài)系統(tǒng)Unit6backgroundLOGOContents Definition Component Nutrition Structure ClassificationLOGOWhat is ecosystem？v Definition An ecosystem is a biological environment consisting of all the organisms living in a particular area, as well as all the nonliving, physical compon

2、ents of the environment with which the organisms interact, such as air, soil, water and sunlight. It is all the organisms in a given area, along with the nonliving (abiotic) factors with which they interact; a biological community and its physical environment.生態(tài)系統(tǒng)是指在一定的空間內(nèi)生物的成分和非生物的成分通過物質(zhì)生態(tài)系統(tǒng)是指在一定的空

3、間內(nèi)生物的成分和非生物的成分通過物質(zhì)循環(huán)和能量流動互相作用、互相依存構(gòu)成的一個具有自動調(diào)節(jié)機制的循環(huán)和能量流動互相作用、互相依存構(gòu)成的一個具有自動調(diào)節(jié)機制的生態(tài)學(xué)功能單位。生態(tài)學(xué)功能單位。LOGOthe basic component of ecosystemv nonliving environment (abiotic component) Energy：solar energy and other energies Climate： sunlight，temperature，rainfall，wind，etc. Matrix and media（基（基質(zhì)質(zhì)和介和介質(zhì)質(zhì)）： rock，so

4、il，water，air，etc. Material metabolism： ；mineral salts ； carbohydrate，protein，fat，humus.（腐殖質(zhì)）LOGOthe basic component of ecosystemv all the organisms (biotic component)Producers Producers are those organisms that can build up foods from inorganic materials, i. e. green plants, algae, and photosyntheti

5、c and chemosynthetic bacteria.1. Green plants, photosynthetic bacteria, chemosynthetic bacteria LOGOthe basic component of ecosystemv all the organisms (biotic component)2. Consumers herbivore（食草動物）: primary consumers carnivore/predator（食肉動物）: secondary consumers and the tertiary consumers omnivore（

6、雜食動物）: detritus consumers （腐質(zhì)消費者; 碎屑消費者 ）3. Decomposersmicroorganism/microbe（微生物）（bacterium【pl.bacteria】 and fungus【pl. fungi/funguses】）protozoan/protozoa （原生動物）small invertebrates （小型無脊椎動物）LOGObasic component of ecosystem thev all the organisms (biotic component)2. Consumers herbivore（食草動物）: primar

7、y consumers carnivore/predator（食肉動物）: secondary consumers and the tertiary consumers omnivore（雜食動物）: detritus consumers （腐質(zhì)消費者; 碎屑消費者 ）3. decomposersmicroorganism/microbe（微生物）（bacterium【pl.bacteria】 and fungus【pl. fungi/funguses】）protozoan/protozoa （原生動物）small invertebrates （小型無脊椎動物）LOGOnutrition st

8、ructure v nutrition structure of ecosystemFood chain and food web Food chains and food webs are representations of the predator-prey relationships between species within an ecosystem or habitat.LOGOnutrition structure v nutrition structure of ecosystemLOGOClassification v land ecosystemsforest ecosystem tropical forest ecosystem temperate forest ecosystemsgrassland ecosystem desert ecosystemLOGOClassification v aquatic ecosystems lake ecosystem river ecosystem marine ecosystem