[1]王梦蕾,袁红娟,白宇,等. 油松不同径向深度与方位树干液流特性研究[J].西北林学院学报,2023,38(5):221-227.[doi:10.3969/j.issn.1001-7461.2023.05.29]
　WANG Meng-lei,YUAN Hong-juan,BAI Yu,et al. Sap Flow Characteristics at Different Radial Depths and Directions in the Trunk of Pinus tabuliformis[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(5):221-227.[doi:10.3969/j.issn.1001-7461.2023.05.29]
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 油松不同径向深度与方位树干液流特性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第5期
页码:
221-227
栏目:
出版日期:
2023-09-30

文章信息/Info

Title:
 Sap Flow Characteristics at Different Radial Depths and Directions in the Trunk of Pinus tabuliformis
文章编号:
1001-7461(2023)05-0221-07
作者:
 王梦蕾1; 袁红娟2; 白宇1; 孙照斌1*
 （1.河北农业大学 林学院，河北 保定 071000；2.河北省文安县自然资源和规划局，河北 文安 065800）
Author(s):
 WANG Meng-lei1; YUAN Hong-juan2; BAI Yu1; SUN Zhao-bin1*
 （1.College of Forestry,Agricultural University of Hebei,Baoding 071000,Hebei,China; 2.Wenan County Natural Resources and Planning Bureau,Wen’an 065800,Hebei,China)
关键词:
 ; 油松; 树干液流; 解剖构造; 径向深度; 方位
Keywords:
Pinus tabuliformis;  sap flow;  anatomic structure;  radial depth;  direction
分类号:
S791.254
DOI:
10.3969/j.issn.1001-7461.2023.05.29
文献标志码:
A
摘要:
 为了解油松树干液流与木质部解剖构造的关系，分析树木构造对水分输送功能的影响，利用热扩散探针法（TDP）测定不同径向深度和方位的树干液流速率，采用富兰克林离析法测定相应部位的木材解剖构造特征，进而分析、探讨木质部解剖构造特征与树干液流的响应关系。结果表明，在径向距形成层不同深度处的液流速率顺序为V30~50 mm＞V20~30 mm＞V0~10 mm＞V10~20 mm，最大值和最小值分别为0.009 7、0.002 5 g·cm-2·s-1；各深度液流速率之间均呈显著线性相关关系；不同方位间液流速率大小顺序为西侧＞东侧＞北侧＞南侧，西侧最大液流速率为0.011 1 g·cm-2·s-1，南侧最小液流速率为0.003 0 g·cm-2·s-1；北侧液流速率与其他方位间液流速率具有高度相关性。不同径向深度管胞长度和长宽比在距形成层40 mm处最大，管胞宽度在距形成层40 mm处最小；不同方位管胞长度和长宽比在西侧最大，管胞宽度在西侧最小，与树干液流变化趋势基本一致；管胞长度和长宽比越大，管胞宽度越小，树干液流速率越快。不同径向深度与方位树干液流速率与解剖构造之间响应程度较高。
Abstract:
 In order to explore the relationship between sap flow and xylem anatomical structure in the trunk of Pinus tabuliformis,and to analyze the influence of tree structure on water transport function,the sap flow rates at different radial depths and orientations in the trunk were measured by thermal diffusion probe method (TDP).The anatomical structure characteristics of wood at corresponding positions were determined by Franklin segregation method.Then,the connection between the measured sap flow rates and the revealed characteristics of xylem anatomical structure was analyzed and discussed.The results showed that the order of liquid flow rates at different depths,i.e.,distance from cambium towards the pith in the radial direction,was V30-50 mm>V20-30 mm>V0-10 mm>V10-20 mm.The maximum and minimum values were 0.009 7 and 0.002 5 g·cm-2·s-1,respectively.There existed a significant linear correlation between the liquid flow rates at each depth.The order of liquid flow rate in different directions was west>east>north>south.The maximum liquid flow rate in the west side was 0.011 1 g·cm-2·s-1,and the minimum liquid flow rate in the south side was 0.003 0 g·cm-2·s-1.The liquid flow rate in the north was highly correlated with those in other three directions.At different radial depths,both the tracheid length and length/width ratio were the largest whereas the tracheid width was the smallest at the depth of 40 mm from the cambium.Among different directions,the tracheid length and length/width ratio were the largest but the tracheid width was the smallest in the west,which was basically consistent with the change trend of trunk sap flow.The greater the tracheid length and length/width ratio,the smaller the tracheid width,the faster the trunk sap flow rate.The response between sap flow rate and anatomical structure was higher in different radial depths and orientations.

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备注/Memo

备注/Memo:
 收稿日期：2022-07-15修回日期：2022-10-25
基金项目：河北省重点研发计划项目（22326806D）。
第一作者：王梦蕾，硕士。研究方向：材性培育与木材利用。E-mail:1577117412@qq.com
*通信作者：孙照斌，博士，教授。研究方向：木材加工利用。E-mail:sunzb920@163.com
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