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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Qian Li analyzed the data, prepared figures and/or tables.

Ligang Ma conceived and designed the experiments, performed the experiments, authored or reviewed drafts of the paper, approved the final draft.

Suhong Liu performed the experiments.

Adilai Wufu analyzed the data, contributed reagents/materials/analysis tools.

Yinbo Li analyzed the data, contributed reagents/materials/analysis tools.

Shengtian Yang performed the experiments.

Xiaodong Yang the teacher Xiaodong Yang made suggestions for the revision of the paper.

Data Deposition

The following information was supplied regarding data availability:

FigShare

DOI:10.6084/m9.figshare.9415880

https://figshare.com/articles/Plant_litter_cover/9415880/2

The 01_The_First_Upscaling_RF.R implements the first-level random forest modeling. The input data is 01_The_First_Upscaling folder, where 01_ModelData folder is modeling data and 02_PredictData folder is data used for prediction.

The 02_The_Second_Upscaling_RF.R implements the second-level random forest modeling. The input data is 02_The_Second_Upscaling folder, where 01_ModelData folder is modeling data and 02_PredictData folder is data used for prediction.

The 03_Slope_and_F.R script is to calculate the annual average trend of change and F statistics of the plant litter cover of 2000-2018.

The 04_Classification_C50.R realizes the classification of the sediment concentration grade and calculates the KAPPA coefficient. The file 04_C50.xlsx is the input data.

Data_Processing_Introductions.docx explains some of the considerations for running R scripts.

Funding

This work was supported by the National Key Research and Development Program of China (2016YFC0402409) and the National Natural Science Foundation of China (41661079, U1603241, 41771470). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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