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The Applicability of Remote Sensing Models of Soil Salinization Based on Feature Space

文献类型： 外文期刊

作者： Liu, Jing 1 ; Zhang, Li 1 ; Dong, Tong 1 ; Wang, Juanle 3 ; Fan, Yanmin 1 ; Wu, Hongqi 1 ; Geng, Qinglong 4 ; Yang, Qiangjun 5 ; Zhang, Zhibin 1 ;

作者机构： 1.Xinjiang Agr Univ, Coll Resources & Environm, Urumqi 830000, Peoples R China

2.Key Lab Grassland Restorat & Environm Informat, Urumqi 830000, Peoples R China

3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Soil & Fertilizer & Agr Water Conservat, Urumqi 830000, Peoples R China

5.China Geoengn Corp, Beijing 100101, Peoples R China

关键词： salinization; feature space; remote sensing inversion; coastal areas; arid areas; applicability

期刊名称：SUSTAINABILITY （ 影响因子：3.889； 五年影响因子：4.089 ）

ISSN：

年卷期： 2021 年 13 卷 24 期

页码：

收录情况： SCI

摘要： Soil salinization is a major challenge for the sustainable use of land resources. An optimal remote sensing inversion model could monitor regional soil salinity across diverse geographical areas. In this study, the feature space method was used to study the applicability of the inversion model for typical salt-affected soils in China (Yanqi Basin (arid area) and Kenli County (coastal area)), and to obtain soil salinity grade distribution maps. The salinity index (SI) surface albedo (Albedo)model was the most accurate in both arid and coastal regions with overall accuracy reaching 93.3% and 88.8%, respectively. The sensitivity factors for the inversion of salinity in both regions were the same, indicating that the SI-Albedo model is applicable for monitoring salinity in arid and coastal areas of China. We combined Landsat 8 Operational Land Imager image data and field data to obtain the distribution pattern of soil salinity using the SI-Albedo model and proposed corresponding countermeasures for soil salinity in the Yanqi Basin and Kenli County according to the degree of salinity. This study on soil salinity in arid and coastal areas of China will provide a useful reference for future research on soil salinity both in China and globally.

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