文字稿
研究人員說(shuō)，人類活動(dòng)使亞馬遜雨林變得更易燃。這是由一項(xiàng)關(guān)于巴西亞馬遜地區(qū)的研究所得出的結(jié)論之一，該結(jié)論表明即使是被保護(hù)的叢林也會(huì)受到影響。這項(xiàng)調(diào)查的成果已在《自然》期刊上發(fā)布。請(qǐng)聽(tīng) Victoria Gill 的報(bào)道。
(sound) The sound of burning rainforest. This is from footage captured by researchers in the Eastern Amazon. Their two-year study found that even selective logging in protected forests opened up the canopy enough to dry out the undergrowth and make it catch fire more easily.
To measure the impact of human activity on the rainforest, the team counted 2,000 species of trees, insects and birds, comparing biodiversity with the amount of forest cover, and you can hear the difference.
While a pristine undisturbed rainforest sounds like this (sound), far fewer species contribute to the chorus when the forest is degraded (sound).
This large-scale study showed that areas with 80% forest cover lost up to half their biodiversity.
詞匯表
footage 一段影片，片段
selective logging 選擇性伐木
canopy 樹(shù)冠（層）
undergrowth 林下植物，指叢林下層的灌木
biodiversity 生物多樣性
pristine 未被破壞（或砍伐）的，原始的
chorus 合唱
測(cè)驗(yàn)
請(qǐng)聽(tīng)報(bào)道并回答下列問(wèn)題。
1. Why even protected areas are at increased risk of forest fires?
2. What does two bursts of the forest sound in the report show about biodiversity?
3. True or false? This study showed that areas with two-thirds forest cover lost up to 50% of their biodiversity.
4. Which word in the text describes animals with similar characteristics to each other?
答案
1. Why are even protected areas at increased risk of forest fires?
Because it opens up the canopy enough to dry out the undergrowth, which makes it more likely to catch fire.
2. What do the clips of forest sound in the report tell us about biodiversity?
In one clip you can hear lots of birds and insects and in the other you hear less noise made by birds and insects – a reduction in biodiversity.
3. True or false? This study showed that areas that had lost two-thirds of their forest cover lost up to 50% of their biodiversity.
False. Two thirds would be approximately 67% of the forest cover and, according to the report, areas with 80% forest cover lost up to half their biodiversity.
4. Which word in the text describes animals with similar characteristics to each other?
Species.
