INRA, UR0407 Pathologie Végétale, Montfavet Cedex, F-84143, France; Department Plant Sciences and Plant Pathology, Montana State University, 119 Plant Bioscience Bldg., Bozeman, MT, 59717-3150, USA.
Glob Chang Biol. 2014 Feb;20(2):341-51. doi: 10.1111/gcb.12447. Epub 2013 Nov 26.
Landscapes influence precipitation via the water vapor and energy fluxes they generate. Biologically active landscapes also generate aerosols containing microorganisms, some being capable of catalyzing ice formation and crystal growth in clouds at temperatures near 0 °C. The resulting precipitation is beneficial for the growth of plants and microorganisms. Mounting evidence from observations and numerical simulations support the plausibility of a bioprecipitation feedback cycle involving vegetated landscapes and the microorganisms they host. Furthermore, the evolutionary history of ice nucleation-active bacteria such as Pseudomonas syringae supports that they have been part of this process on geological time scales since the emergence of land plants. Elucidation of bioprecipitation feedbacks involving landscapes and their microflora could contribute to appraising the impact that modified landscapes have on regional weather and biodiversity, and to avoiding inadvertent, negative consequences of landscape management.
景观通过其产生的水汽和能量通量影响降水。具有生物活性的景观还会产生含有微生物的气溶胶，其中一些微生物能够在接近 0°C 的温度下催化云内冰晶形成和晶体生长。由此产生的降水有利于植物和微生物的生长。越来越多的观测和数值模拟证据支持涉及植被景观及其宿主微生物的生物沉淀反馈循环的合理性。此外，冰核活性细菌（如丁香假单胞菌）的进化历史支持了这样一种观点，即在陆地植物出现以来的地质时间尺度上，它们一直是这一过程的一部分。阐明涉及景观及其微生物群的生物沉淀反馈作用，可以有助于评估改变后的景观对区域天气和生物多样性的影响，并避免景观管理的意外负面影响。
