根状茎克隆植物葭萌对风化过程的生长和繁殖权衡

IF 3 2区 环境科学与生态学 Q2 ECOLOGY
Chaoqun Ba, S. Zhai, J. Qian, Bo Liu, Jinlei Zhu, Zhimin Liu
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引用次数: 0

摘要

生长和繁殖的权衡是克隆植物适应策略的重要组成部分。根状沙生植物如何通过权衡对风成过程(沙埋和风蚀)做出反应,对于它们在活动沙丘上的定植尤为重要。尽管根状物种对风成过程的反应已被部分记录,但这些克隆物种如何通过生长和繁殖的潜在权衡来响应风成过程仍不清楚。在本研究中,我们采用野外调查和生物量模型来评估芦苇营养生长和生殖生长之间的权衡,以及对沙埋和风蚀的响应。砂埋促进了种子生物量的积累和繁殖力的提高。风蚀降低了RE,但对种子生物量影响不显著。沙埋增加了分株生物量,风蚀增加了分株密度,加速了分株成熟。本研究表明,根状沙生植物根据风沙过程调整其生长策略,即生殖生长和分株大小响应沙埋而增加,营养生长和分株数量响应风蚀而增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Trade-offs in growth and reproduction of rhizomatous clonal plant Phragmites communis in response to aeolian processes
Trade-offs in growth and reproduction are essential parts of the adaptive strategies of clonal plants. How rhizomatous psammophytes respond to aeolian processes (sand burial and wind erosion) by means of trade-offs is supposed to be especially important for their colonization on the active sand dune. Despite the responses of rhizomatous species to aeolian processes have been partly documented, how these clonal species respond to aeolian processes by means of potential trade-offs in growth and reproduction still remains unclear. In this study we employed field investigation and biomass modelling to evaluate the trade-offs between vegetative and reproductive growth as well as between the number and size of ramets of Phragmites communis in response to sand burial and wind erosion. Sand burial promoted the accumulation of seed biomass and reproductive effort (RE). Wind erosion reduced RE but had no significant influence on seed biomass. Sand burial increased the biomass of ramets, while wind erosion increased ramet population density and accelerated ramet maturation. Our study demonstrates that rhizomatous psammophytes adjust their growth strategies in response to aeolian processes, i.e., reproductive growth and ramet size increase responding to sand burial, while vegetative growth and ramet numbers increase responding to wind erosion.
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来源期刊
Journal of Plant Ecology
Journal of Plant Ecology 生物-植物科学
CiteScore
4.60
自引率
18.50%
发文量
134
审稿时长
3 months
期刊介绍: Journal of Plant Ecology (JPE) serves as an important medium for ecologists to present research findings and discuss challenging issues in the broad field of plants and their interactions with biotic and abiotic environment. The JPE will cover all aspects of plant ecology, including plant ecophysiology, population ecology, community ecology, ecosystem ecology and landscape ecology as well as conservation ecology, evolutionary ecology, and theoretical ecology.
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