干旱区生态环境知识资源中心(Arid): 顶坛花椒叶片功能性状对早衰的响应

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	顶坛花椒叶片功能性状对早衰的响应
其他题名	Responses of leaf functional traits of Zanthoxylum planispinum var dintanensis to premature senescence
	李红; 喻阳华; 龙健; 李娟
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2021
卷号	40 期号:6 页码:1000-4890
中文摘要	为了解衰退对顶坛花椒(Zanthoxylum planispinum var.dintanensis)叶片功能性状的影响及其衰退响应策略,本研究以顶坛花椒为对象,测定了正常和早衰花椒人工林叶片功能性状及土壤理化性质。结果表明:在同一物候期,早衰造成顶坛花椒比叶面积、叶片磷、稳定碳同位素丰度和叶干物质含量升高,叶片有机碳、叶片氮、叶片钾和稳定氮同位素丰度减小,但仅比叶面积、稳定碳同位素丰度存在显著差异;相关性分析表明,早衰人工林叶片因子间的相关性较正常人工林弱;通过相对重要性和冗余分析,发现土壤水分对顶坛花椒比叶面积和稳定碳同位素丰度等叶片功能性状影响最大,其次是氮、钾和钙元素。正常和早衰花椒植株的生长限制元素随物候期而变化,早衰造成顶坛花椒对氮、磷养分利用效率降低,且使花椒形成了在保持原叶干物质含量基础上进一步降低比叶面积的策略,以提高其水分利用效率。研究结果可为顶坛花椒人工林生态系统稳定性的维持、顶坛花椒产量和品质的提升提供科学依据。
英文摘要	To understand the effects of recession on leaf functional traits of Zanthoxylum planispinum var.dintanensis and its recession response strategy,we investigated the leaf functional traits and soil physicochemical properties of normal and prematurely declining Z.planispinum var.dintanensis plantations.The results showed that specific leaf area,leaf phosphorus concentration, stable carbon isotope abundance,and leaf dry matter content were increased under premature senescence.The concentrations of organic carbon,nitrogen,potassium,and stable nitrogen isotope in leaves were decreased by premature senescence.There were significant differences in specific leaf area and stable carbon isotope abundance between normal and prematurely declining plantations.The correlations among leaf factors of prematurely declining plantation were weaker than that in normal plantation.The results of relative importance analysis and redundancy analysis revealed that soil moisture had the strongest effect on leaf functional traits such as specific leaf area and stable carbon isotope abundance in Z.planispinum var.dintanensis,followed by nitrogen, potassium,and calcium concentrations.Limited elements of normal and prematurely declining Z.planispinum var.dintanensis varied with phenological stage.The premature declining caused the reduction of nitrogen and phosphorus use efficiency of Z.planispinum var.dintanensis.Z.planispinum var.dintanensis would further reduce specific leaf area to improve its water use efficiency but maintain leaf dry matter content.These findings may provide a scientific basis for the maintenance of ecosystem stability and the improvement of yield and quality of Z.planispinum var.dintanensis.
中文关键词	植物功能性状 ; 早衰 ; 顶坛花椒 ; 干热河谷石漠化区
英文关键词	plant functional trait premature senescence Zanthoxylum planispinum var.dintanensis dry-hot valley rocky desertification area
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6983151
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365265
作者单位	李红, 贵州师范大学, 贵州省山地环境信息系统与生态环境保护重点实验室, 贵阳, 贵州 550001, 中国.; 龙健, 贵州师范大学, 贵州省山地环境信息系统与生态环境保护重点实验室, 贵阳, 贵州 550001, 中国.; 喻阳华, 贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国.; 李娟, 贵州师范大学地理与环境科学学院, 贵阳, 贵州 550025, 中国.
推荐引用方式 GB/T 7714	李红,喻阳华,龙健,等. 顶坛花椒叶片功能性状对早衰的响应[J],2021,40(6):1000-4890.
APA	李红,喻阳华,龙健,&李娟.(2021).顶坛花椒叶片功能性状对早衰的响应.生态学杂志,40(6),1000-4890.
MLA	李红,et al."顶坛花椒叶片功能性状对早衰的响应".生态学杂志 40.6(2021):1000-4890.