Publications

Chen, FY; Wu, GF; Wang, JJ; He, JJ; Wang, YH (2016). A MODIS-Based Retrieval Model of Suspended Particulate Matter Concentration for the Two Largest Freshwater Lakes in China. SUSTAINABILITY, 8(8), 832.

Abstract
Suspended particulate matter concentration (C-SPM) is a key parameter describing case-II water quality. Empirical and semi-empirical models are frequently developed and applied for estimating C-SPM values from remote sensing images; however, they are usually region- or season-dependent. This study aimed to develop a Moderate Resolution Imaging Spectroradiometer (MODIS)-based retrieval model of C-SPM for Poyang and Dongting Lake together. The 89 C-SPM measurements in Poyang and Dongting Lake as well as their corresponding MODIS Terra images were used to calibrate C-SPM retrieval models, and the calibration results showed that the exponential models of MODIS red band and red minus shortwave infrared (SWIR) band at 1240 nm both explained about 76% of the variation of C-SPM of Poyang and Dongting Lake together. When the two models were applied to the validation datasets, the results indicated that the exponential model of red band obtained more stable C-SPM estimations with no bias at a significance level of 0.05 in both lakes. The MODIS red-band-based model achieved acceptable results for estimating C-SPM in both Poyang and Dongting Lake, and it provided a foundation for obtaining comparable spatiotemporal information of C-SPM, which will be helpful for comparing, understanding, managing, and protecting the two aquatic ecosystems.

DOI:
10.3390/su8080832

ISSN:
2071-1050