BioticSystemVegetationinTropicalRainforest热带雨林的植物Where.pptVIP

AL Geography – Biotic System Vegetation in Tropical Rainforest 熱帶雨林的植物 Where are the Tropical Rainforests? 微氣候micro-climate 陽光難以透達 (light intensity is very low) 非常陰暗 (darkness) 空氣流動緩慢 (low speed of wind) 日夜溫差少 (low range of diurnal temperature) 相對濕度非常高 (high RH) 葉子特徵 the features of leaves 蠟質層 waxy cuticles 根部 root 支柱根/ 氣根 (stilt and aerial roots 根部 root 莖花 west-cauliflory 不同種類的植物(different kinds of vegetation)– 攀緣及藤本植物(climbers and lianas) 從攀緣的樹木中得到支撐 physical support 不同種類的植物(different kinds of vegetation)–附生植物;寄生植物(epiphytes;parasites) 生長在大樹上樹幹的陳國中 以便爭取陽光 會吸取樹木的養分 不同種類的植物(different kinds of vegetation)– 絞殺植物 (stranglers) 不同種類的植物(different kinds of vegetation)– 腐生植物 (saprophytes) They are important in nutrient renewal cycle without them nutrients cannot be released from organic matter and available to plants 在養分循環中是非常重要, 因沒有了他們, 有機物(陳國西)就不能被分解 為了爭取最多的陽光及減低蒸騰的速度 (remain rigid in the mid-day heat ? photosynthesis and decrease transpiration rate) 板根 (buttress roots) Plants which flower or fruit from their main stems or woody trunks 因太高的關係, 不利動物及昆蟲進食, 為了較易傳播花粉及種子, 故直接生長在莖或樹幹上 Not every animals can able to reach the upper storey for pollination such as butterfly