农业机械学报2025，Vol.56Issue(5)：492-500,9.DOI:10.6041/j.issn.1000-1298.2025.05.047
活立木茎干蓄水能力与液流相关性研究
Study on the Correlation Between Stem Water Storage Capacity and Sap Flow in Standing Trees
摘要
Abstract
The dynamic relationship between stem water content and sap flow is of great significance for understanding the mechanisms of plant water transport and transpiration regulation.However,traditional plant water monitoring methods are limited by spatial and temporal resolution,making it difficult to capture subtle changes in plant water dynamics.An intelligent monitoring system based on the i.MX6ULL chip was developed.By integrating advanced sensor technology,data acquisition,and analysis methods,real-time monitoring of key parameters such as stem water content,sap flow rate,transpiration,soil moisture,and air temperature and humidity was achieved.Long-term field monitoring of Ginkgo biloba trees verified the system's stability and reliability.Statistical analysis results showed that the sap flow and stem water content of Ginkgo biloba exhibited significant trends at different growth stages,with sap flow rates ranging from 0.82 cm/h to 20.52 cm/h.During the growing season,the stem water content derivative showed a significant negative correlation with sap flow data(Pearson correlation coefficient was greater than-0.7).As sap flow was increased during the growing season,stem water content was decreased,and the rate of stem water change could reflect the trend of sap flow to a certain extent.Additionally,for every 1℃ increase in air temperature,sap flow rate was increased by an average of 8.6％,while for every 10 percentage points increase in air relative humidity,the sap flow rate was decreased by 27.3％.The research result can provide experimental evidence for the relationship between water transport in standing trees and offer scientific support for plant physiology research and ecological management.关键词
活立木茎干蓄水能力/智能监测系统/液流/传感器技术/实时监测Key words
stem water storage capacity/intelligent monitoring system/sap flow/sensor technology/real-time monitoring分类
农业科技引用本文复制引用
赵燕东,刘小锋,聂立杨,李继龙,朱琳..活立木茎干蓄水能力与液流相关性研究[J].农业机械学报,2025,56(5):492-500,9.基金项目
国家重点研发计划项目(2020YFD1000500) （2020YFD1000500）
