Mapping volumetric soil moisture in the Vietnamese Red River Delta using Landsat 8 images

IF 1 4区地球科学 Q4 GEOGRAPHY, PHYSICAL

Journal of Spatial Science Pub Date : 2022-02-08 DOI:10.1080/14498596.2022.2034130

Huu Loc Ho, Hai Son Vu, D. Tran, Edward Park, An Giang

引用次数: 1

Abstract

ABSTRACT This study estimates the surface soil moisture content in a case study situated in the Vietnamese Red River Delta, using the Landsat 8 satellite images. The trapezoidal relationship between land surface temperature and vegetation index was used to obtain soil wetness indexes. A split-window algorithm was developed to overcome the missing of atmospheric data. The method was validated with ground truth across different land covers. The RMSE between the calculated and measured SMC ranges between 0.556 and 0.971 and varies across different types of land covers. The method is important to monitor SMC across large areas with limited surveyed data.

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使用Landsat 8图像绘制越南红河三角洲的体积土壤湿度

本研究利用Landsat 8卫星图像估算了越南红河三角洲的表层土壤水分含量。利用地表温度与植被指数之间的梯形关系获得土壤湿度指数。为了克服大气数据的缺失，提出了一种分窗算法。该方法通过不同土地覆盖的地面真实值进行了验证。计算值与实测值的均方根误差(RMSE)在0.556 ~ 0.971之间，不同土地覆盖类型的均方根误差存在差异。该方法对于在有限的调查数据下监测大面积SMC具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Spatial Science 地学-地质学

CiteScore

5.00

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Spatial Science publishes papers broadly across the spatial sciences including such areas as cartography, geodesy, geographic information science, hydrography, digital image analysis and photogrammetry, remote sensing, surveying and related areas. Two types of papers are published by he journal: Research Papers and Professional Papers. Research Papers (including reviews) are peer-reviewed and must meet a minimum standard of making a contribution to the knowledge base of an area of the spatial sciences. This can be achieved through the empirical or theoretical contribution to knowledge that produces significant new outcomes. It is anticipated that Professional Papers will be written by industry practitioners. Professional Papers describe innovative aspects of professional practise and applications that advance the development of the spatial industry.