ISWC OpenIR  > 水保所知识产出(1956-2013)
五针热脉冲探头在测定树干液流中的应用
杜梦鸽1; 王胜2; 樊军1,2
2017
Source Publication应用生态学报
Volume28Issue:8Pages:2438-2444
Abstract

准确测量树干液流对研究树木耗水特性、植物生理和生态水文效应等具有重要意
义.本文选用一种新型五针热脉冲多功能数字探头( PHPP) ,运用热脉冲理论,测量小叶杨树
干液流,并与热扩散探针( TDP) 进行对比分析,探究五针热脉冲探头测量树干液流的适用性
和准确性.结果表明: 五针热脉冲探头能够准确揭示小叶杨树干液流昼夜变化规律,并且与热
扩散探针测量结果呈显著的线性相关关系,R2达到0.90,均方根误差为2.75,平均相对误差为
11%.PHPP 探头能较为精确地识别低液流和逆液流,可以快速准确地拟合热参数,直接测得
树干液流速率,应用潜力较大.

Other 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 flow.

Keyword五针热脉冲数字探头( Phpp 树干液流 热扩散探针( Tdp) 干旱地区
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8523
Collection水保所知识产出(1956-2013)
Affiliation1.西北农林科技大学资源环境学院
2.中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国 家重点实验室
Recommended Citation
GB/T 7714
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.
APA 杜梦鸽,王胜,&樊军.(2017).五针热脉冲探头在测定树干液流中的应用.应用生态学报,28(8),2438-2444.
MLA 杜梦鸽,et al."五针热脉冲探头在测定树干液流中的应用".应用生态学报 28.8(2017):2438-2444.
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