[1]李广德,付海曼,贾黎明*. 银杏树干边材液流及水容特性研究[J].西北林学院学报,2014,29(04):54-58.[doi:doi:10.3969/j.issn.1001-7461.2014.04.09]
 LI Guang-de,FU Hai-man,JIA Li-ming*. Studies on the Characteristics of Xylem Sap Flow and Water Capacitance of Ginkgo biloba[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2014,29(04):54-58.[doi:doi:10.3969/j.issn.1001-7461.2014.04.09]
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 银杏树干边材液流及水容特性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第29卷
期数:
2014年04期
页码:
54-58
栏目:
出版日期:
2014-07-30

文章信息/Info

Title:
 Studies on the Characteristics of Xylem Sap Flow and Water Capacitance of Ginkgo biloba
文章编号:
1001-7461(2014)04-0054-05
作者:
 李广德12付海曼23贾黎明2*
 (1. 国家开放大学 农林医药学院 北京 100039; 2. 北京林业大学 省部共建森林培育与保护教育部重点实验室 北京 100083;3. 国家林业局 林产工业规划设计院 北京100010)
Author(s):
 LI Guang-de12 FU Hai-man23 JIA Li-ming2*
 (1. Faculty of Agroforestry & Medicine, The Open University of China, Beijing 100039, China; 2. The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China; 3. Planning and Design Institute of Forest Products Industry, State Forestry Administration, Beijing 100010, China)
关键词:
 银杏边材液流水势水容调控
Keywords:
Ginkgo biloba sap flow water potential water capacitance regulating and controlling
分类号:
S792.95
DOI:
doi:10.3969/j.issn.1001-7461.2014.04.09
文献标志码:
A
摘要:
 为探明银杏(Ginkgo biloba)枝叶水势、水容特征及其对树干边材液流的调节和影响。利用热扩散式边材液流检测技术、压力室技术等对其树干边材液流、枝叶水势、水容等进行测定。结果表明,春、夏、秋三季银杏树干边材平均液流速率分别为(1.11±0.76)×10-3、(0.82±0.58)×10-3、(0.94±0.21)×10-3 cm·s-1,三者之间无显著差异。银杏枝条与叶片水势、水容具有相似的“V”型日变化。整个生长季,银杏枝条和叶片平均水势分别为(-1.74±0.24)MPa和(-1.80±0.20)MPa;枝条和叶片水容分别为(0.38±0.02)×10-3 g·cm-3·MPa-1和(5.83±1.9)×10-3 g·cm-3·MPa-1。银杏枝叶水势、水容与树干边材液流速率呈负相关,共同作用和调节其蒸腾耗水,但不同时段其主导因子不同。
Abstract:
 In order to clarify the twig and leaf water potential and capacitance of Ginkgo biloba and its regulating and impacting on sap flow, sap flow velocity (Vsf), twig and leaf water potential (ψ) and water capacitance(C) were measured by using thermal dissipation sap flow velocity probe (TDP) and pressure chamber. The results showed that the average values of daily Vsf were (1.11±0.76)×10-3, ( 0.82±0.58)×10-3 and (0.94±0.21)×10-3 cm·s-1 in spring, summer and autumn, respectively. But the difference of Vsf in three seasons was not significant. It was a “V” curve for diurnal variation of G. biloba twig and leaf ψ, and C. Through the entire growth season, the average values of twig and leaf ψ were (-1.74±0.24) and (-1.80±0.20) MPa, and the C were (0.38±0.02) and (5.83±1.9)×10-3 g·cm-3·MPa-1, respectively. And the relationships between Vsf and ψ and C were opposite. In conclusion, water transpiration and use of G. biloba was regulated and controlled together by twig and leaf water capacitance, water potential, but in different times the dominant factors were different.

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备注/Memo

备注/Memo:
 收稿日期:2013-10-23修回日期:2013-12-08
基金项目:国家林业公益性行业科研专项经费重大项目(201004004); 北京市自然科学基金(6052016)”;北京林业大学“985”优势学科创新平台开放基金(000-1108003)。
作者简介:李广德,男,博士,讲师,研究方向:森林培育、远程教育。E-mail:guangdeli123@163.com
*通信作者:贾黎明,男,博士,教授,研究方向:用材林和能源林培育、城市林业。E-mail:jlm@bjfu.edu.cn
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