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◆Sentence◆ Even for the process to be considered carbon neutral on long time scales, Schlesinger noted, forest managers would have to be certain that replacement trees were given enough time to store the same amount of carbon that their predecessors contained when they were harvested. Especially if older, more carbon-rich forests are cleared to make room for faster-growing, easier-to-harvest trees, then even more carbon must be stored away to make up the difference. ◆句式结构分析◆ ①Even for the process /to be considered carbon neutral on long time scales 为状语成分；even 表强调，译为：即便，即使；该状语成分较长，可汉译为：即使是在较长时间跨度内这一过程被认为是碳中性的…… ②该句主干为“主系表”结构，即：forests managers/ would have to be / certain that …；certain之后，that引导宾语从句（表态度的形容词certain的宾语从句） ③that 宾语从句主干为被动句，即：replacement trees/ were given /enough time to … ④that their predecessors contained when they were harvested 为定语从句，修饰限定 the same amount of carbon ⑤especially if … trees为条件状语从句； ⑥主干为被动句，即：even more carbon / must be stored away; to make up the difference为目标状语。 ◆词汇分析◆ on long time scales 在长时间内 note v. 指出 store v. 存储 amount n. 数量 predecessor n. 前任；原先的东西 carbon-rich adj. 富含碳的；碳含量较高的 clear v. 清理；砍伐 fast-growing adj. 生长较快的 make room for …为……让道；为……腾出空间 make up … 组成；弥补 ◆参考翻译◆ 即使是在较长时间跨度内这一过程被认为是碳中性的，Schlesinger指出，森林管理者必须确保后来种植的树木有足够的时间生长，这样才能吸收存储与先前被砍伐的树木含有相同量的碳。特别是如果砍掉那些年代更久远且富含碳元素的森林来腾出空间去种植那些生长速度更快、更容易成才的树木，这就需要储存更多的碳来弥补差这种差异。 |
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