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面临风险的针叶树林的空间分类,以支持种子收集工作和可持续林业

James H Thorne¹, Jessie M Godfrey², Ryan M Boynton¹

¹Department of Environmental Science and Policy, University of California, One Shields Ave, Davis, CA, 95616, USA.

Journal of environmental management

|December 28, 2024

概括

来自危针叶树种群的适应气候的种子对于可持续林业至关重要. 这项研究优先考虑Pinus ponderosa (Pipo) 种子收集,将气候变化和野火风险与作业苗圃需求相结合,在它们丢失之前确定关键区域.

科学领域:

林业和保护科学林业和保护科学
适应气候变化适应气候变化
种子生态学种子生态学

背景情况:

处于危险的针叶树种群在炎热,干旱,低海拔环境中可能含有适应气候的种子,这些种子对于重新造林至关重要.
可持续的林业实践需要从能够抵御气候变化和增加野火风险的种群中识别和收集种子.

研究的目的:

开发和应用一个选框架,以优先考虑采集种子的Pinus ponderosa (Pipo) 调查区域.
整合气候变化暴露,野火风险和营运苗圃优先事项,以实现高效的种子采集战略.

主要方法:

交叉更新的Pipo范围地图与种子区和海拔带 (SZEB) 数据.
评估了740个潜在的收集单位的气候变化和野火风险.
结合运营苗圃数据 (库存,供应,需求) 和风险评估来排名SZEBs.

主要成果:

确定了182个高度暴露于气候变化的SZEB,其中42个也存在高风险的支架替换火灾.
在目前的种子批量库存中,只有4个高风险的SZEB被代表.
73个首要的运营优先级SZEB通常具有较低的风险排名.

结论:

将景观风险模型与运营性种子采集优先事项相结合,将努力引导到损失之前的脆弱种群.
选框架增强了形作物调查的空间指导,并改善了种子银行库存覆盖范围.
这种方法可以优化森林苗圃和田间管理,以适应气候变化.

关键词:

气候变化风险气候变化风险运营优先事项运营优先事项松树 (Pinus ponderosa) 是一个有趣的植物.再造林森林的再生收集种子收集种子空间优先级的确定

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