A commentary review on the use of normalized difference vegetation index (NDVI) in the era of popular remote sensing

• 作者: Sha Huang Lina Tang Joseph P.Hupy Yang Wang Guofan Shao
• 来源期刊: 林业研究（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: REVIEW ARTICLES
• 页码范围: 1-6
• 页数: 6页
• 语种: 英文

摘要

The Normalized Difference Vegetation Index(NDVI),one of the earliest remote sensing analytical prod-ucts used to simplify the complexities of multi-spectral imagery,is now the most popular index used for vegeta-tion assessment.This popularity and widespread use relate to how an NDVI can be calculated with any multispectral sensor with a visible and a near-IR band.Increasingly low costs and weights of multispectral sensors mean they can be mounted on satellite,aerial,and increasingly—Unmanned Aerial Systems (UAS).While studies have found that the NDVI is effective for expressing vegetation status and quantified vegetation attributes,its widespread use and popularity,especially in UAS applications,carry inher-ent risks of misuse with end users who received little to no remote sensing education.This article summarizes the progress of NDVI acquisition,highlights the areas of NDVI application,and addresses the critical problems and consid-erations in using NDVI.Detailed discussion mainly covers three aspects:atmospheric effect,saturation phenomenon,and sensor factors.The use of NDVI can be highly effective as long as its limitations and capabilities are understood.This consideration is particularly important to the UAS user community.