减少光照和浇水可促进森林表土移植后植物记忆的苏醒

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY
Chuang Yuan, Gaojuan Zhao, Youxin Shen, Fajun Chen, Xiaoying Xu, Xun Fu, Ya Lan, Zhengjun Hou, Yibo Guo, Xiai Zhu
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引用次数: 0

摘要

植物繁殖体是恢复实践中至关重要的植物区系记忆材料。唤醒供体地表土中植物繁殖体(即种子、根碎片、根茎、球茎和块茎)的植物区系记忆是全球退化地森林恢复的一种快速方法。然而,减少光照和浇水等可控措施对植物区系记忆唤醒的影响程度仍不清楚。我们在一项森林表土转移实验中采用了二次饱和 D-优化设计,以量化减少光照和浇水对植物区系记忆唤醒的影响。我们用植物繁殖体中出现的小植株的累积数量和丰富度来表示植物区系记忆觉醒的程度。我们的结果表明,在不同的生命形式中,减弱光照和浇水的任何组合都能显著增加小植株的累积数量和丰富度。减弱光照对植物区系记忆觉醒的积极影响明显大于浇水。不同生命形式对减光和浇水的反应呈现出不同的抛物线或正线性关系。光照减少约 60% 的退化地块和浇水约 80% 的供体地块会产生最高数量和最丰富的小植株。我们的结论是,在表土移植后的半干旱亚热带森林中,减少光照和浇水的组合能有效启动植物区系的记忆觉醒。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Light reduction and watering enhance flora memory awakening after forest topsoil translocation
Plant propagules are crucial flora memory materials in restoration practice. Awakening flora memory from plant propagules (i.e. seeds, root fragments, rhizomes, corms, and tubers) in the translocated topsoil from a donor site is a rapid method for forest restoration on degraded sites globally. However, it remains unclear to what extent manageable measures, such as light reduction and watering, affect flora memory awakening. We employed a quadratic saturation D‐optimal design in a forest topsoil translocation experiment to quantify the effects of light reduction and watering on flora memory awakening. We used the cumulative number and richness of plantlets emerging from plant propagules to represent the extent of flora memory awakening. Our results show that any combinations of light reduction and watering significantly increased both the cumulative number and richness of plantlets across different life forms. Light reduction had a significantly more positive effect on flora memory awakening than watering. Different life forms exhibited different parabolic or positive linear relationships in responses to light reduction and watering. Light reduction of about 60% of the degraded site and watering of about 80% of the donor site resulted in the highest number and richness of plantlets. We concluded that light reduction and watering combinations were effective in kick‐starting the flora memory awakening in a semiarid subtropical forest after topsoil translocation.
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来源期刊
Restoration Ecology
Restoration Ecology 环境科学-生态学
CiteScore
6.50
自引率
15.60%
发文量
226
审稿时长
12-24 weeks
期刊介绍: Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.
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