Why seedlings survive: influence of plant attributes
Why seedlings survive: influence of plant attributes
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DOI：
10.1007/s11056-012-9336-6
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发表时间：
2012-09-01
期刊：
影响因子：
2.2
通讯作者：
Grossnickle, Steven C.
中科院分区：
文献类型：
--
作者：
Grossnickle, Steven C.
幼苗存活和成功的森林恢复涉及许多造林实践。成功的森林恢复计划的一个重要方面是种植具有高成活率的优质幼苗。因此，苗圃需要创造具有植物属性的幼苗，以便幼苗在田间种植后获得最佳的成功机会。自20世纪中期以来，研究林务人员已经严格检查了赋予田间场地条件改善幼苗存活率的植物属性。这篇综述描述了通常测量的幼苗质量材料（即茎高、茎粗、根质量、茎根比、抗旱性、矿物质营养状况）和性能（即抗冻性和根系生长）的价值，这些植物属性被定义为回答幼苗在种植后存活的重要问题。这些植物属性的理想水平可以加快幼苗克服种植压力的速度，与森林恢复地点“耦合”，从而确保成功的幼苗建立。虽然种植具有这些理想植物属性的幼苗并不能保证高成活率；种植具有理想植物属性的幼苗可以增加田间种植后的存活率。
Seedling survival and successful forest restoration involves many silvicultural practices. One important aspect of a successful forest restoration program is planting quality seedlings with high survival capability. Thus the nursery needs to create seedlings with plant attributes that allow for the best chance of success once a seedling is field planted. Since the mid-twentieth century, research foresters have critically examined plant attributes that confer improved seedling survival to field site conditions. This review describes the value of commonly measured seedling quality material (i.e. shoot height, stem diameter, root mass, shoot to root ratio, drought resistance, mineral nutrient status) and performance (i.e. freezing tolerance and root growth) plant attributes defined as important in answering the question of why seedlings survive after planting. Desirable levels of these plant attributes can increase the speed with which seedlings overcome planting stress, become 'coupled' to the forest restoration site, thereby ensuring successful seedling establishment. Although planting seedlings with these desirable plant attributes does not guarantee high survival rates; planting seedlings with desirable plant attributes increases chances for survival after field planting.