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[1]YU Hong-bo,YANG Jie,XU Yan-da,et al.Mathematical Model of Stem Sap Flow Flux for Hippophae rhamnoides L. subsp. sinensis Rousi in Huangfuchuan Basin[J].Research of Soil and Water Conservation,2009,16(01):162-166.

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Mathematical Model of Stem Sap Flow Flux for Hippophae rhamnoides L. subsp. sinensis Rousi in Huangfuchuan Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 01 Page number: 162-166 Column: Public date: 2009-02-20

Title:: Mathematical Model of Stem Sap Flow Flux for Hippophae rhamnoides L. subsp. sinensis Rousi in Huangfuchuan Basin

Author(s):: YU Hong-bo^1,2, YANG Jie¹, XU Yan-da¹, ZANG Chun-xin¹; 1. The Key Lab of Inner Mongolia Grassland/The Province-Ministry Co-constructing Incubation Base of National Key Laboratory, Huhhot 010021, China;
2. College of Geograghy Science, Inner Mongolia Normal University, Huhhot 010022, China

Keywords:: Thermal Dissipation Probe method; sap flow rate; model; Hippophae rhamnoides L. subsp. sinensis Rousi; Huangfuchuan Basin

CLC:: S718.43

DOI:: -

Abstract:: Sap flow rate of Hippophae rhamnoides L. subsp. sinensis Rousi in Huangfuchuan Basin was measured using TDP method. Synchronous environmental factors such as incident solar radiation, air temperature, relative air humidity, wind speed, soil temperature at depth of 10 cm were recorded continuously using automatic weather station. Leaf stomatal conductance was also measured at the same time using LI-6400. The data were processed with Excel 2000, Visual C++ 6.0 and SPSS 13.0. Mathematical model [gH₂O/(h·gDW)] of sap flow flux perunit dry foliage mass was developed by analyzing correlation between sap flow flux perunit dry foliage mass and environmental factors. The model is good based on the performance indices. Reasonable forecast result has been achieved by predicting sap flow flux perunit dry foliage mass on 23th July 2006 and on 2nd July 2007. Mathematical models[gH₂O/(d·tree)] of daily sap flow flux for H.rhamnoides in Huangfuchuan Basin were developed based on the model of sap flow flux perunit dry foliage mass. The models are good through being validated and the second model is better.

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