scholarly journals Growth diagnosis of a transplanted tree based on sap flow measurement : A case study of Magnolia grandiflora L. for four years after transplantation

2016 ◽  
Vol 42 (1) ◽  
pp. 110-115 ◽  
Author(s):  
Shinichi TAKEUCHI ◽  
Riichi TAKAHASHI ◽  
Shinichi IIDA
Keyword(s):  
Sap Flow ◽  
Flow Measurement ◽  
Magnolia Grandiflora

Ozone uptake by adult urban trees based on sap flow measurement

2012 ◽  
Vol 162 ◽  
pp. 275-286 ◽  
Author(s):  
Hua Wang ◽  
Weiqi Zhou ◽  
Xiaoke Wang ◽  
Fuyuan Gao ◽  
Hua Zheng ◽  
...  
Keyword(s):  
Sap Flow ◽  
Flow Measurement ◽  
Urban Trees ◽  
Ozone Uptake

Knowledge-based systems and operational hydrology

1991 ◽  
Vol 18 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Slobodan P. Simonovic
Keyword(s):  
Expert System ◽  
Flow Measurement ◽  
Knowledge Based Systems ◽  
Flow Measurements ◽  
Knowledge Based ◽  
Original Concept ◽  
System Water ◽  
Potential Use ◽  
Selection Of

Knowledge-based systems were brought to the attention of hydrologists almost a decade ago. The application of knowledge-based systems technology is natural and appropriate for the field of hydrology because it contains numerous procedures developed from theory, actual practice, and experience. The emphasis of the present paper is on demystifying knowledge-based systems of artificial intelligence. After a detailed review of the most important applications to the field of hydrology, the original concept for applying knowledge-based technology is presented. The discussion ends with the list of possible benefits from the application of knowledge-based technology. An expert system for the selection of a suitable method for flow measurement in open channels is used as a case study to illustrate the discussion in the paper. The system has been designed for potential use in Environment Canada. Key words: expert system, water resources, hydrology, flow measurements.

scholarly journals Estimating stand water use of large mountain ash trees and validation of the sap flow measurement technique

1997 ◽  
Vol 17 (12) ◽  
pp. 747-756 ◽  
Author(s):  
R. A. Vertessy ◽  
T. J. Hatton ◽  
P. Reece ◽  
S. K. O'Sullivan ◽  
R. G. Benyon
Keyword(s):  
Water Use ◽  
Measurement Technique ◽  
Sap Flow ◽  
Flow Measurement ◽  
Mountain Ash ◽  
Ash Trees

scholarly journals Sap flow measurement by a single thermal dissipation probe: exploring the transient regime

2009 ◽  
Vol 66 (6) ◽  
pp. 608-608 ◽  
Author(s):  
Imen Mahjoub ◽  
Mohamed M. Masmoudi ◽  
Jean P. Lhomme ◽  
Netij Mechlia
Keyword(s):  
Sap Flow ◽  
Flow Measurement ◽  
Transient Regime ◽  
Thermal Dissipation ◽  
Thermal Dissipation Probe

scholarly journals Study on trees transplantation method with reduced crown and root system reduction based on sap flow measurement:

2019 ◽  
Vol 45 (1) ◽  
pp. 80-85
Author(s):  
TAKEUCHI Shinichi ◽  
SHINOZAKI Keitaro ◽  
HONMA Shuuichi ◽  
MATSUSHIMA Daiki ◽  
HIDAKA Eiji ◽  
...  
Keyword(s):  
Root System ◽  
Sap Flow ◽  
Flow Measurement ◽  
System Reduction

scholarly journals Environmental Control on Transpiration: A Case Study of a Desert Ecosystem in Northwest China

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1211 ◽  
Author(s):  
Shiqin Xu ◽  
Zhongbo Yu
Keyword(s):  
Sap Flow ◽  
Environmental Control ◽  
Arid Ecosystems ◽  
Desert Ecosystem ◽  
Time Lags ◽  
Evaporative Demand ◽  
Threshold Control ◽  
Stand Transpiration ◽  
Semi Arid

Arid and semi-arid ecosystems represent a crucial but poorly understood component of the global water cycle. Taking a desert ecosystem as a case study, we measured sap flow in three dominant shrub species and concurrent environmental variables over two mean growing seasons. Commercially available gauges (Flow32 meters) based on the constant power stem heat balance (SHB) method were used. Stem-level sap flow rates were scaled up to stand level to estimate stand transpiration using the species-specific frequency distribution of stem diameter. We found that variations in stand transpiration were closely related to changes in solar radiation (Rs), air temperature (T), and vapor pressure deficit (VPD) at the hourly scale. Three factors together explained 84% and 77% variations in hourly stand transpiration in 2014 and 2015, respectively, with Rs being the primary driving force. We observed a threshold control of VPD (~2 kPa) on stand transpiration in two-year study periods, suggesting a strong stomatal regulation of transpiration under high evaporative demand conditions. Clockwise hysteresis loops between diurnal transpiration and T and VPD were observed and exhibited seasonal variations. Both the time lags and refill and release of stem water storage from nocturnal sap flow were possible causes for the hysteresis. These findings improve the understanding of environmental control on water flux of the arid and semi-arid ecosystems and have important implications for diurnal hydrology modelling.

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