摘要
以黔中喀斯特干热河谷石漠化地区不同海拔的顶坛花椒为对象,采集土壤养分性状、叶功能性状和果皮品质性状数据,通过主成分分析筛选主要的土壤养分性状与叶功能性状,阐明其对果皮品质性状的影响规律。结果表明:总体上,叶片厚度和叶干物质含量均以低海拔为高,叶片磷含量以中低海拔为高,比叶面积以中高海拔为高,叶片含水率和叶绿素SPAD值以高海拔为高,叶片碳、氮含量未随海拔发生显著分异。果皮维生素C、维生素E和铁含量在样地YD3具有显著优势,必需氨基酸、非必需氨基酸、β-胡萝卜素、锌和碘含量未随海拔发生显著变化。采用主成分分析方法筛选出影响果皮品质性状的主要指标,包括土壤全磷含量、速效磷含量、全钙含量、速效钙含量、速效铁含量、碳磷比、碳氮比,以及叶片厚度、比叶面积、叶组织密度和叶片碳含量。通过冗余分析,进一步找到影响果皮品质性状的因子,为土壤速效钙含量、比叶面积、叶片厚度、叶组织密度和土壤碳磷比等,但仅土壤速效钙含量达到显著水平。其中,比叶面积和土壤钙含量分别倾向于影响微量元素和有机物合成,土壤计量关系可能同时影响有机和无机合成过程。
The effects of leaf functional traits and soil nutrients on the peel quality traits of Zanthoxylum planispinum ‘dintanensis’ are important for screening soil and leaf traits. In this study, we investigated Zanthoxylum planispinum ‘dintanensis’ at different altitudes in the rocky desert area of a karst dry hot valley in central Guizhou. First, the soil, leaf, and peel quality traits were obtained. The main soil and leaf traits were then screened using principal component analysis. Finally, the effects of the soil and leaf traits on the peel quality traits were determined. In general, leaf thickness and leaf dry matter content were high at low altitudes, leaf P content was high at middle and low altitudes, the specific leaf area was high at middle and high altitudes, the leaf water content and chlorophyll SPAD value were high at high altitudes, and leaf C and N content did not differ significantly with altitude. The Vc, Ve, and fruit Fe had significant advantages in the middle altitude(plot No. 3). Essential amino acid, non-essential amino acid, β-carotene, fruit Zn, and fruit I levels did not change significantly with altitude. Principal component analysis was used for screening the main indicators of peel quality traits. These included soil total P, available P, total Ca, available Ca, and available Fe contents, C∶P and C∶N ratios, and leaf thickness, specific leaf area, leaf tissue density, and leaf C content. Redundancy analysis showed that the factors affecting peel quality traits were soil available Ca content, specific leaf area, leaf thickness, leaf tissue density, and soil C∶P ratio, but only soil available Ca content reached a significant level. The specific leaf area and soil Ca content tended to affect the synthesis of trace elements and organic compounds, and the soil stoichiometry may have affected both organic and inorganic processes. The optimization of the peel quality of Zanthoxylum planispinum ‘dintanensis’ through the regulation of soil properties and plant functional properti
作者
喻阳华
李一彤
吴银菇
王俊贤
宋燕平
邓雪花
YU Yanghua;LI Yitong;WU Yingu;WANG Junxian;SONG Yanping;DENG Xuehua(School of Karst Science,Guizhou Normal University,Guiyang,Guizhou550001,China;State Engineering Technology Institute for Karst Decertification Control,Guiyang,Guizhou550001,China;School of Geography and Environmental Science,Guizhou Normal University,Guiyang,Guizhou550025,China)
出处
《森林与环境学报》
CSCD
北大核心
2023年第1期8-16,共9页
Journal of Forest and Environment
基金
贵州省科技支撑计划项目“高麻素与高香型顶坛花椒新品种筛选与高效培育技术研究”(黔科合支撑[2022]一般103)。
关键词
顶坛花椒
叶功能性状
土壤养分
果皮品质
主成分分析
冗余分析
Zanthoxylum planispinum‘dintanensis’
leaf functional traits
soil nutrients
peel quality
principal component analysis
redundancy analysis
