Long-term water clarity patterns of lakes across China  using Landsat series imagery from 1985 to 2020

Chen, Xidong; Liu, Liangyun; Zhang, Xiao; Li, Junsheng; Wang, Shenglei; Gao, Yuan; Mi, Jun

doi:https://doi.org/10.5194/hess-26-3517-2022

Articles | Volume 26, issue 13

https://doi.org/10.5194/hess-26-3517-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-26-3517-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 13

Research article

|

08 Jul 2022

Research article |

| 08 Jul 2022

Long-term water clarity patterns of lakes across China using Landsat series imagery from 1985 to 2020

Xidong Chen, Liangyun Liu, Xiao Zhang, Junsheng Li, Shenglei Wang, Yuan Gao, and Jun Mi

Data sets

The 30 m long-term LAke Water Secchi Depth (SD) dataset (LAWSD30) of China (1985–2020) X. Chen and L. Liu https://doi.org/10.5281/zenodo.5734071

Natural Lake Dataset in China (NLD_China) X. Chen and L. Liu https://doi.org/10.5281/zenodo.5734166

Short summary

A 30 m LAke Water Secchi Depth (LAWSD30) dataset of China was first developed for 1985–2020, and national-scale water clarity estimations of lakes in China over the past 35 years were analyzed. Lake clarity in China exhibited a significant downward trend before the 21st century, but improved after 2000. The developed LAWSD30 dataset and the evaluation results can provide effective guidance for water preservation and restoration.