Differences of lake water color, water environment and hydrological remote sensing

Lake water color remote sensing is a subject that analyzes the optical quantities such as water color element parameter concentration and inherent optical characteristics through strict physical radiative transfer equation ( Duan Hongtao et al ,2019).
The basis of remote sensing of lake water color is to accurately obtain the radiation signal from water body , The key is to analyze the internal relationship between remote sensing reflectance and the inherent optical characteristics of water color factor .
The core parameter of lake water color remote sensing is phytoplankton pigment 、 Concentration and inherent optical properties of water color three elements such as non pigment particles and colored dissolved organic matter .

Remote sensing of lake water environment is a subject that takes the environmental parameters that can be obtained directly or indirectly by remote sensing except water color factors as the research object , Including water temperature 、 Phytoplankton bloom 、 Parameters and primary productivity that can be directly monitored, such as aquatic vegetation 、 Total phosphorus 、 Indirect monitoring parameters such as eutrophication index (IOCCG,2018).

Lake hydrology is a subject that studies the change of lake water volume and lake hydrodynamic process , Its core content is to study the changes of lake hydrological elements and the relationship between lake water balance , Including the establishment of water balance relationship 、 The influencing factors of lake water change and the response of lake water to climate change ( Zhang Qi et al ,2020b).
Remote sensing of Lake hydrology is based on remote sensing , Taking the hydrological elements of lakes as the main observation object , Develop the principle of quantitative inversion or estimation for its information extraction 、 A discipline of methods and techniques .