Forest and Grassland Resources Research >
Study on Populus euphratica Growth Model in Tarim River Basin
Received date: 2020-08-01
Revised date: 2020-10-08
Online published: 2020-11-30
This paper takes 78 groups of Populus euphratica trees in the Tarim River Basin as the research object,aiming to study the growth model of P euphratica tree height,diameter at breast height and volume.The study introduces the modeling and testing data into 16 empirical equations and theoretical equations,and obtains each model parameter value and coefficient of determination (R 2).Based on the average absolute error (MAE),root mean square error (RMSE) and average error (ME ) and the average prediction error percentage (MPSE),the study selects the P euphratica growth model of the best fitting effect.It finds that the most suitable growth model for P euphratica tree height is the Collier model with a determination coefficient of 0.771,and the most suitable growth model for P euphratica at breast height is also the Kolier model with a determination coefficient of 0.969. The most suitable growth model for P euphratica volume is the logistic model and its coefficient of determination is 0.966.The growth model of P euphratica is obtained through comparative study of multiple fitting models through the set inspection and evaluation standards,in order to provide a reference for the afforestation design of P euphratica in the Tarim River Basin.
Key words： Tarim River Basin; Populus euphratica; growth model; fitness test
Qingjie WANG , Guodong LI , Xiaoman LIU , Bowen AN , Huaifeng JI . Study on Populus euphratica Growth Model in Tarim River Basin[J]. Forest and Grassland Resources Research, 2020 , 0(5) : 100 -107 . DOI: 10.13466/j.cnki.lyzygl.2020.05.015
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