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n. 森林44 次
When Tom Swetnam joined the U.S. Forest Service in the 1970s, his mandate was to “put everything out,” he recalled.
汤姆·斯韦特纳姆回忆说，20世纪70年代他加入美国林务局时，他的任务是“把所有火都扑灭”。
They rid the forest of dead and sick trees, reducing competition and curbing the spread of disease.
它们清除了森林中枯死和患病的树木，减少了竞争，并遏制了疾病的传播。
Yet even as scientists and public officials increasingly agree on the need for more fires in our forests, climate change is making this tactic more challenging, experts said.
然而专家们表示，尽管科学家和政府官员越来越认同我们的森林需要更多的火，但气候变化正使这一策略变得更具挑战性。
the forest management practices in the 1970s.
20世纪70年代的森林管理做法。
the importance of forest ecosystems.
森林生态系统的重要性。
Christopher Kettle, Biodiversity International’s director for forest genetic resources and restoration in Rome, says that the need for infrastructure — things such as mechanisms for collecting and storing seeds, and nurseries to raise seedlings — might be most desperate here because many trees are ‘masting’ species, which don’t produce seeds every year.
国际生物多样性中心驻罗马的森林遗传资源与恢复主任克里斯托弗·凯特尔表示，这里对基础设施——诸如收集和储存种子的机制以及培育幼苗的苗圃——的需求可能最为迫切，因为许多树木属于“大年结实”物种，并非每年都结种子。