Study on the extraction method of Glycyrrhiza uralensis Fisch. distribution area based on Gaofen-1 remote sensing imagery: a case study of Dengkou county DOI Creative Commons

Xinxin Wei,

Zeyuan Zhao,

Taiyang Chen

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: March 7, 2025

Glycyrrhiza uralensis Fisch., a perennial medicinal plant with robust root system, plays significant role in mitigating land desertification when cultivated extensively. This study investigates Dengkou County, semi-arid region, as the research area. First, reflectance differences of feature types, and importance bands were evaluated by using random forest (RF) algorithm. Second, after constructing G. vegetation index (GUVI), recognition accuracy was compared between RF classification model constructed based on January-December GUVI common indices set support vector machine (SVM) set. Finally, spectral characteristics other types under 2022 analyzed, historical distribution identified mapped. The results demonstrated that blue near-infrared are particularly for distinguishing . Incorporating year-round (January-December) data significantly improved identification accuracy, achieving producer’s 97.26%, an overall 93.00%, Kappa coefficient 91.38%, user’s 97.32%. Spectral analysis revealed distinct different years types. From 2014 to 2022, expanded from northeast County central southwestern regions, transitioning small, scattered patches larger, concentrated areas. highlights effectiveness models identifying , demonstrating superior performance alternative sets or algorithms. However, generalizability may be limited due influence natural anthropogenic factors Therefore, regional adjustments optimization parameters necessary. provides valuable reference employing remote sensing technology accurately map current regions similar environmental conditions.

Language: Английский

Study on the extraction method of Glycyrrhiza uralensis Fisch. distribution area based on Gaofen-1 remote sensing imagery: a case study of Dengkou county DOI Creative Commons

Xinxin Wei,

Zeyuan Zhao,

Taiyang Chen

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: March 7, 2025

Glycyrrhiza uralensis Fisch., a perennial medicinal plant with robust root system, plays significant role in mitigating land desertification when cultivated extensively. This study investigates Dengkou County, semi-arid region, as the research area. First, reflectance differences of feature types, and importance bands were evaluated by using random forest (RF) algorithm. Second, after constructing G. vegetation index (GUVI), recognition accuracy was compared between RF classification model constructed based on January-December GUVI common indices set support vector machine (SVM) set. Finally, spectral characteristics other types under 2022 analyzed, historical distribution identified mapped. The results demonstrated that blue near-infrared are particularly for distinguishing . Incorporating year-round (January-December) data significantly improved identification accuracy, achieving producer’s 97.26%, an overall 93.00%, Kappa coefficient 91.38%, user’s 97.32%. Spectral analysis revealed distinct different years types. From 2014 to 2022, expanded from northeast County central southwestern regions, transitioning small, scattered patches larger, concentrated areas. highlights effectiveness models identifying , demonstrating superior performance alternative sets or algorithms. However, generalizability may be limited due influence natural anthropogenic factors Therefore, regional adjustments optimization parameters necessary. provides valuable reference employing remote sensing technology accurately map current regions similar environmental conditions.

Language: Английский

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