应用生态学报2017，Vol.28Issue(8)：2438-2444,7.DOI:10.13287/j.1001-9332.201708.035
五针热脉冲探头在测定树干液流中的应用
Application of the penta-needle heat pulse probes to determine the stem sap flow
摘要
Abstract
It is very important to measure sap flow accurately for investigating water consumption characteristics of trees,plant physiology and eco-hydrology.A new multifunctional digital pentaneedle heat pulse probes (PHPP) was selected in this study,which was used to measure the sap flow of the Lobular poplar,in order to test the applicability and reliability of the new penta-needle heat pulse sensors in the measurement of sap flow in comparison with the thermal diffusion method (TDP).The results showed that PHPP can accurately obtain the diurnal variation of the sap flow of the Lobular poplar and the results had statistically significant linear correlation with TDP,with R2 being 0.90,root mean square error 2.75 and mean relative error 11％.PHPP could accurately identify low and reverse sap flow,with the thermal parameters being fitted quickly and accurately.It was a promising method to measure sap fl0w.关键词
五针热脉冲数字探头(PHPP)/树干液流/热扩散探针(TDP)/干旱地区Key words
penta-needle heat pulse probe (PHPP)/sap flow/thermal diffusion probe (TDP)/arid region引用本文复制引用
杜梦鸽,王胜,樊军..五针热脉冲探头在测定树干液流中的应用[J].应用生态学报,2017,28(8):2438-2444,7.基金项目
本文由国家自然科学基金项目(41571224,41571130082)资助 This work was supported by the National Natural Science Foundation of China (41571224,41571130082). （41571224,41571130082）
