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影响树木生长高度因素的研究.doc


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存档编号     赣南师范学院学士学位论文影响树木生长高度因素的研究教学学院:物理与电子信息学院届  别:   2011届专  业:   物理学学  号:   070800068姓  名:   颜熠乔指导老师:   钟握军完成日期:     录摘要·················································································3关键词···············································································3Abstract·················································································3Key words··············································································3引言···················································································································································································································································································································································································································································································································································································································································· 要:本文通过对树木中水的吸收与运输过程的描述,讨论与分析影响树木生长高度的三个主要因素:毛细现象、蒸腾作用、根压。通过理论的分析与计算,测算出水在树木中上升的高度,由此推测树木的高度,并将理论数据与某种树木的实际高度相比较,分析其中的差异,做出定性的结论。关键词:毛细现象;蒸腾作用;根压;水的运输Abstract:Basedonthetreesinthewaterabsorptionandtransportationprocessdescription,discussionandanalysisoftreegrowthheightofthreemainfactors:capillarity,transpiration,,estimatedincreaseinwaterheightinthetrees,whichindicatedthattheheightofthetrees,paretheactualheightofthetreestoanalyzethedifferences,:Capillarity;transpiration;rootpressure;·科赫博士率先爬上世界最高的5棵树进行水分输送测量。其中最高的一棵是生长在美国加利福尼亚州、有“世界第一高树”美誉的红巨杉,,与30多层高的大厦相当。在这些树的顶部,他们找

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  • 时间2019-09-20