Study on correlation between crop optical vegetation index and radar parameters and its influencing factors based on plot unit

被引：0
|
作者：
Wu, Guijie [1 ,2 ]
Zhou, Zhongfa [1 ,2 ,3 ]
Zhao, Xin [1 ,2 ,3 ]
Huang, Denghong [1 ,2 ]
Long, Yangyang [1 ,3 ]
Peng, Ruiwen [1 ,2 ]
机构：
[1] Guizhou Normal Univ, Sch Karst Sci, Guiyang, Peoples R China
[2] State Engn Technol Inst Karst Desertificat Control, Guiyang, Peoples R China
[3] Guizhou Normal Univ, Sch Geog & Environm Sci, Guiyang, Peoples R China
来源：
GEOCARTO INTERNATIONAL | 2025年 / 40卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Plot-level analysis; optical vegetation indices; radar vegetation indices; back-scattering coefficients; correlation analysis; SOIL-MOISTURE; ENVISAT-ASAR;
D O I：
10.1080/10106049.2025.2453621
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study investigates the correlation between optical vegetation indices (NDVI, EVI, and DVI) in the Xixiu Modern Efficient Vegetable Agricultural Demonstration Park using Sentinel-1A radar and Sentinel-2A optical imagery.Results show that VH back-scattering coefficients exhibit the most significant correlation with optical vegetation indices across time periods, while VV, RVI, and CR show weaker or inconsistent correlations. Landscape shape index (LSI) and patch size significantly influence these relationships, with larger LSI or patch sizes enhancing the correlation between VH, VV, RVI, and NDVI/DVI.
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页数：18
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