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Post-Fire Plant Recovery in the Mojave and Sonoran Deserts of Western North America

机译:北美西部莫哈韦沙漠和索诺兰沙漠的火灾后植物恢复

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摘要

Fire is thought to have been generally rare historically in the Mojave and Sonoran Deserts. However, invasion by exotic grasses (e.g., Schismus spp.) has increased fuel continuity, promoting fire in these deserts. Succession and recovery are not well understood processes in deserts, nonetheless for a novel disturbance like fire. In addition to helping build theories of desert succession and recovery, information on post-fire recovery has numerous practical implications (e.g., determining whether active revegetation is needed). Systematic reviews provide a means for obtaining literature using reproducible search criteria. This approach facilitates a balanced appraisal of available information, synthesizes scattered literature, and may result in insights not apparent by examining research studies individually. Using the systematic approach, I addressed these questions: What are post-fire resprouting frequencies among species? How quickly does perennial plant cover recover following fire? What is the relationship of species composition and time since fire? Which species are major post-fire colonizers? What variation occurs in post-fire responses between deserts?
机译:历史上,人们认为莫哈韦沙漠和索诺兰沙漠很少发生火灾。但是,外来草类(例如Schismus spp。)的入侵增加了燃料的连续性,在这些沙漠中引起了大火。沙漠中的演替和恢复过程尚不为人所知,尽管如此,它还是引发了像火一样的新型干扰。除了有助于建立沙漠演替和恢复的理论外,有关火灾后恢复的信息还具有许多实际意义(例如,确定是否需要主动植被恢复)。系统评价提供了一种使用可重复搜索标准获取文献的方法。这种方法有助于对可用信息进行平衡评估,综合散乱的文献,并且可能通过单独检查研究成果而得出的见解并不明显。我使用系统的方法解决了以下问题:物种之间的重燃后发芽频率是多少?多年生植物覆盖物在火灾后恢复的速度有多快?火灾后物种组成与时间的关系是什么?火灾后主要的殖民者是哪些物种?沙漠之间的大火后反应有什么变化?

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