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author:

Li, Yi-fan (Li, Yi-fan.) [1] | Xu, Zhang-hua (Xu, Zhang-hua.) [2] (Scholars:许章华) | Hao, Zhen-bang (Hao, Zhen-bang.) [3] | Yao, Xiong (Yao, Xiong.) [4] | Zhang, Qi (Zhang, Qi.) [5] | Huang, Xu-ying (Huang, Xu-ying.) [6] | Li, Bin (Li, Bin.) [7] | He, An-qi (He, An-qi.) [8] | Li, Zeng-lu (Li, Zeng-lu.) [9] | Guo, Xiao-yu (Guo, Xiao-yu.) [10]

Indexed by:

Scopus SCIE

Abstract:

Unmanned aerial vehicle (UAV) hyperspectral remote sensing technology has developed rapidly in recent years, providing a new scheme for intelligent monitoring of forest resources. This study aims to deeply mining the UAV hyperspectral information, and construct the best model for extracting Moso bamboo (Phyllostachys pubescens) forest information. Firstly, the spectral information features of Moso bamboo, broadleaf, bare area and shadow were obtained and their spectral anisotropies were analyzed. Secondly, multiple machine learning algorithms were combined with the recursive feature elimination (RFE) to obtain three sets of optimized feature subsets. Eventually, three sets of optimization features were substituted into multiple machine learning algorithms to build nine models of Moso bamboo information extraction, comparing their classification effects and generalization capabilities. The results showed that: (1) The subset of features optimized by different base classifiers in combination with RFE and the ranking results of optimized features' importance were different, but all the three sets of optimized feature subsets showed relatively obvious feature difference patterns; (2) The nine models based on SVM-RFE, RF-RFE and XGBoost-RFE were all capable of extracting Moso bamboo information, among which, the classification effect of the XGBoost-RFE-XGBoost model was the best and had significant advantages, with the overall classification accuracy OA, Kappa coefficient and R (2) of 98.75%, 0.983 and 0.980, respectively, and the classification accuracy for Moso bamboo was 98.34%. Thus, XGBoost was the most applicable algorithm for feature optimization in combination with RFE, and the most effective algorithm with a better generalization ability for extracting Moso bamboo information from UAV hyperspectral images. This study is crucial for Moso bamboo's large area monitoring and fine identification, providing a technical reference for obtaining information about the spatial and temporal distribution of Moso bamboo resources timely and accurately, facilitating the monitoring and management of them, and giving full play to their ecological and economic benefits.

Keyword:

feature optimization machine learning algorithms Moso bamboo forest Recursive feature elimination (RFE) UAV hyperspectral remote sensing

Community:

  • [ 1 ] [Li, Yi-fan]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou, Peoples R China
  • [ 2 ] [Xu, Zhang-hua]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou, Peoples R China
  • [ 3 ] [Huang, Xu-ying]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou, Peoples R China
  • [ 4 ] [Li, Bin]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou, Peoples R China
  • [ 5 ] [He, An-qi]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou, Peoples R China
  • [ 6 ] [Xu, Zhang-hua]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming, Peoples R China
  • [ 7 ] [Hao, Zhen-bang]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming, Peoples R China
  • [ 8 ] [Yao, Xiong]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming, Peoples R China
  • [ 9 ] [Li, Zeng-lu]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming, Peoples R China
  • [ 10 ] [Guo, Xiao-yu]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming, Peoples R China
  • [ 11 ] [Hao, Zhen-bang]Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou, Peoples R China
  • [ 12 ] [Yao, Xiong]Fujian Univ Technol, Coll Architecture & Planning, Fuzhou, Peoples R China
  • [ 13 ] [Zhang, Qi]Fuzhou Univ, Acad Digital China, Minist Educ, Key Lab Spatial Data Min & Informat Sharing, Fuzhou, Peoples R China
  • [ 14 ] [Huang, Xu-ying]Nanjing Univ, Int Inst Earth Syst Sci, Nanjing, Peoples R China
  • [ 15 ] [Li, Zeng-lu]SEGi Univ, Kota Damansara, Malaysia

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Source :

GEOCARTO INTERNATIONAL

ISSN: 1010-6049

Year: 2023

Issue: 1

Volume: 38

3 . 3

JCR@2023

3 . 3 0 0

JCR@2023

ESI Discipline: GEOSCIENCES;

ESI HC Threshold:26

JCR Journal Grade:2

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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