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Influence of Environmental Factors on Formation of Morphological Structure of Caragana Korshiskii. in Semi-arid Region
Authors
万惠娥
王延平
+3 more
程积民
胡相明
赵艳云
Publication date
1 January 2005
Publisher
Abstract
以半干旱区宁夏固原17a生柠条灌木林为研究对象,分析了不同地形、整地方式及降雨量对柠条生长形态的影响,并对影响柠条单株形态组成的指标进行了主成分分析。研究结果表明:(1)不同坡位对柠条的株高、根深、生物量影响显著,而对柠条的分枝数没有明显影响;不同整地方式对柠条的株高、分枝、根深及单株生物量均影响显著。(2)降雨量对柠条形态组成影响深刻,柠条的株高、分枝、单株生物量与年度累积降雨量之间呈"S"型曲线,说明柠条形态建成与降雨量有极大的相关性;根系的生长与降雨量之间则呈指数规律增长。(3)柠条各生长指标间存在着紧密的联系。株高、分枝、株生物量是描述柠条地上部形态结构特征的指标组合;根深则是描述柠条地下形态结构的指标
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018