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The effect of low-temperature event on the survival and growth of Juglans mandshurica seedlings within forest gaps
Alternative TitleThe effect of low-temperature event on the survival and growth of Juglans mandshurica seedlings within forest gaps
Li Xiufen1; Wen Yongjing1; Zhang Jinxin1; Liu Limin1; Jin Lei1; Yan Tao1; Wang Yi1
2018
Source PublicationJOURNAL OF FORESTRY RESEARCH
ISSN1007-662X
Volume29Issue:4Pages:943-951
AbstractIn forest ecosystems, gap formation changes the allocation of abiotic resources and thus affects the survival and growth of understory plants. However, how tree seedling survival and growth respond to low-temperature events and the influencing mechanisms remain unclear. To clarify how low-temperature event limits the survival and growth of tree seedlings in the montane regions of eastern Liaoning Province, northeast China, we investigated temperature and light intensity within secondary forest gaps, and the survival and growth of Juglans mandshurica seedlings after a low-temperature event in the spring of 2014. Damage to seedlings due to low temperature significantly varied in different aspects. Seedlings in gaps on southeast-facing slopes were the most seriously damaged, followed by those in gaps on northeast-facing slopes. In contrast, seedlings in west-facing gaps and in control plots without slope aspect were not damaged. The freezing injury index for seedlings was negatively correlated with minimum temperature (r = - 0.608, P < 0.01), but it was positively correlated with light intensity (r = 0.818, P < 0.01). In addition, height and root collar diameter of damaged seedlings were significantly lower than those of the undamaged seedlings (P < 0.01) during the early growing season (April-July), but no significant difference were observed during the late growing season (July-October) (P > 0.05). The extent of seedling damage was directly related to slope aspect. Low temperature and high light intensity were found to be the dominant factors affecting extent of damage to seedlings on southeast- and northeast-facing slopes.
Other AbstractIn forest ecosystems, gap formation changes the allocation of abiotic resources and thus affects the survival and growth of understory plants. However, how tree seedling survival and growth respond to low-temperature events and the influencing mechanisms remain unclear. To clarify how low-temperature event limits the survival and growth of tree seedlings in the montane regions of eastern Liaoning Province, northeast China, we investigated temperature and light intensity within secondary forest gaps, and the survival and growth of Juglans mandshurica seedlings after a low-temperature event in the spring of 2014. Damage to seedlings due to low temperature significantly varied in different aspects. Seedlings in gaps on southeast-facing slopes were the most seriously damaged, followed by those in gaps on northeast-facing slopes. In contrast, seedlings in west-facing gaps and in control plots without slope aspect were not damaged. The freezing injury index for seedlings was negatively correlated with minimum temperature (r = - 0.608, P 0.05). The extent of seedling damage was directly related to slope aspect. Low temperature and high light intensity were found to be the dominant factors affecting extent of damage to seedlings on southeast- and northeast-facing slopes.
KeywordEASTERN LIAONING PROVINCE FROST DAMAGE EUCALYPTUS-PAUCIFLORA SECONDARY FORESTS AIR-TEMPERATURE CANOPY GAPS ESTABLISHMENT MORTALITY DENSITY LIGHT Secondary forest gap Freezing injury index Minimum temperature Light intensity Slope aspect
Indexed ByCSCD
Language英语
Funding Project[National Key Research and Development Program of China] ; [National Nature Scientific Foundation Project of China]
CSCD IDCSCD:6253685
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/144319
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.中国科学院
Recommended Citation
GB/T 7714
Li Xiufen,Wen Yongjing,Zhang Jinxin,et al. The effect of low-temperature event on the survival and growth of Juglans mandshurica seedlings within forest gaps[J]. JOURNAL OF FORESTRY RESEARCH,2018,29(4):943-951.
APA Li Xiufen.,Wen Yongjing.,Zhang Jinxin.,Liu Limin.,Jin Lei.,...&Wang Yi.(2018).The effect of low-temperature event on the survival and growth of Juglans mandshurica seedlings within forest gaps.JOURNAL OF FORESTRY RESEARCH,29(4),943-951.
MLA Li Xiufen,et al."The effect of low-temperature event on the survival and growth of Juglans mandshurica seedlings within forest gaps".JOURNAL OF FORESTRY RESEARCH 29.4(2018):943-951.
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