是什么影响了科罗拉多山地烧毁森林中的人工树苗存活率?

IF 3.7 2区 农林科学 Q1 FORESTRY Forest Ecology and Management Pub Date : 2024-10-18 DOI:10.1016/j.foreco.2024.122321
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引用次数: 0

摘要

在整个美国西部,山地森林中大规模的严重野火正在造成无树区,由于缺乏种子来源和气候变暖,这些无树区可能无法自然重新造林。土地管理者通常会在这些地区种植苗圃培育的树苗,以促进森林恢复和复原能力,但影响树苗在整个景观中存活的因素尚不确定。我们获得了 5656 株树苗种植一个生长季后的存活监测数据,这些树苗分布在美国科罗拉多州的九个山地野火区和四个国家森林中。我们利用这些数据研究了树苗存活率在一系列因素(包括长期平均气候条件、种植后的天气条件以及种子采集地点和树种)影响下的变化情况。我们发现,经过一个生长季后,所有地块的平均存活率为 80%,但存活率从 0% 到 100% 不等。在较凉爽、潮湿的地块以及在较温暖、潮湿的年份种植的地块,存活率更高。松柏的存活率也比花旗松高,而且用于培育幼苗的当地采集种子来自海拔比种植地低的地点时,存活率也更高。我们的研究结果表明,在科罗拉多山地野火中,植树的地点和时间以及所使用的植物材料对植树成功与否起着至关重要的作用,并应有助于土地管理者在当前和未来的气候条件下优化火后植树幼苗的存活率。
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What influences planted tree seedling survival in burned Colorado montane forests?
Across the western United States, large, severe wildfires in montane forests are creating treeless patches that can fail to reforest naturally due to a lack of seed sources and a warming climate. Nursery-grown tree seedlings are commonly planted by land managers into these areas to promote forest recovery and resilience, but uncertainty exists about what influences their survival across the landscape. We obtained survival monitoring data that had been collected one growing season after planting for 5656 tree seedlings, which were distributed across nine montane wildfires and four National Forests in Colorado, USA. We used these data to examine how seedling survival varied across a range of factors, including long-term average climatic conditions, post-planting weather conditions, and locations and species of seed lot collection. We found that survival after one growing season averaged 80 % across all plots but ranged from 0 % to 100 %. Survival was greater at cooler, wetter sites and at sites planted in warmer, wetter years. Survival was also greater for ponderosa pine than for Douglas-fir, and when the locally collected seed lot used to produce the seedlings came from a site that was lower in elevation than the planting site. Our results suggest that the location and timing of tree planting, and the plant materials used, play critical roles in planting success in Colorado montane wildfires, and should help land managers optimize post-fire planted seedling survival under both current and future climatic conditions.
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来源期刊
Forest Ecology and Management
Forest Ecology and Management 农林科学-林学
CiteScore
7.50
自引率
10.80%
发文量
665
审稿时长
39 days
期刊介绍: Forest Ecology and Management publishes scientific articles linking forest ecology with forest management, focusing on the application of biological, ecological and social knowledge to the management and conservation of plantations and natural forests. The scope of the journal includes all forest ecosystems of the world. A peer-review process ensures the quality and international interest of the manuscripts accepted for publication. The journal encourages communication between scientists in disparate fields who share a common interest in ecology and forest management, bridging the gap between research workers and forest managers. We encourage submission of papers that will have the strongest interest and value to the Journal''s international readership. Some key features of papers with strong interest include: 1. Clear connections between the ecology and management of forests; 2. Novel ideas or approaches to important challenges in forest ecology and management; 3. Studies that address a population of interest beyond the scale of single research sites, Three key points in the design of forest experiments, Forest Ecology and Management 255 (2008) 2022-2023); 4. Review Articles on timely, important topics. Authors are welcome to contact one of the editors to discuss the suitability of a potential review manuscript. The Journal encourages proposals for special issues examining important areas of forest ecology and management. Potential guest editors should contact any of the Editors to begin discussions about topics, potential papers, and other details.
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