Journal of Agricultural Big Data ›› 2025, Vol. 7 ›› Issue (1): 59-68.doi: 10.19788/j.issn.2096-6369.100032

Previous Articles     Next Articles

A 10-m Fractional Vegetation Cover Monthly Dataset of the Kherlen River Basin in 2022

NIU BoWen1(), FENG QuanLong1,*(), ZHANG Yu1, GAO BingBo1, SUKHBAATAR Chinzorig2, FENG AiPing3, YANG JianYu1   

  1. 1. College of Land Science and Technology, China Agricultural University, Beijing 100093, China
    2. Institute of Geography and Geoecology, Mongolian Academy of Sciences, Ulaanbaatar 15170, Mongolia
    3. Ministry of Ecology and Environment Center for Satellite Application on Ecology and Environment, Beijing 100094, China
  • Received:2024-05-04 Accepted:2024-07-11 Online:2025-03-26 Published:2025-02-05
  • Contact: FENG QuanLong

Abstract:

Precisely obtaining the Fractional Vegetable Cover (FVC) at the river basin scale is of immense importance for delving into the ecological environment, wetland health, and ecological conservation strategies within watersheds. The Kherlen River Basin is an important ecological area across the border between China and Mongolia. It has high biodiversity and is essential for supporting and maintaining the balance of ecosystems in the region. Thus, this dataset focuses on the Kherlen River Basin, leveraging Sentinel-2 multispectral remote sensing imagery with a spatial resolution of 10 m to derive FVC with high precision. The dataset provides vegetable cover data to support the ecological protection of the Kherlen River Basin. In order to overcome the problem, traditional vegetation coverage inversion methods, such as pixel dichotomy, linear regression, and random forest regression models, could be more effective in mining subtle differences between spectral features and finding complex nonlinear relationships between high-dimensional features. To estimate the vegetation coverage more accurately in the watershed, this paper compares the performance of four models: the Bidirectional Long Short-Term Memory (BiLSTM) model based on deep learning, Random Forest Regression, Multilayer Perceptron, and LSTM, to determine the optimal data processing method. The feature data used are based on Sentinel-2 multispectral data, integrating spectral indices and elevation data. The vegetation-related information reflected includes chlorophyll content, moisture status, and topography. This feature dataset is further divided into training and testing sets. The comparison results show that BiLSTM achieved an R2 of 0.716 and an RMSE of 0.103, indicating the best overall performance. This model generated a monthly vegetation coverage dataset for the Kherlen River Basin in 2022, comprising vegetation coverage inversion results for 12 months. All data have undergone operations such as mosaicking and mask extraction. This dataset can assess the vegetation growth status and ecosystem health of the Kherlen River Basin and support ecological protection research in related watersheds.

Data summary:

Item Description
Dataset name A 10-m Fractional Vegetation Cover Monthly Dataset of the Kherlen River Basin in 2022
Specific subject area Land resources and information technology
Research topic Fractional Vegetation Cover
Time range 2022
Geographical scope Kherlen River Basin,Mengolia
Spatial resolution 10 m
Data types and technical formats .tif
Dataset structure The dataset contains 12 images; the content is monthly images of vegetation cover data in the Kherlen River Basin for the year 2022.
Volume of dataset 148 GB
Key index in dataset Fractional Vegetable Cover Index
Data accessibility https://cstr.cn/17058.11.sciencedb.agriculture.00026
https://doi.org/10.57760/sciencedb.agriculture.00026
Financial support Research and development on remote sensing monitoring and assessment technology of non-point source pollution in Kherlen River Basin under the National Key Research and Development Program (2021YFE0102300)

Key words: Kherlen River Basin, machine learning, deep learning, BiLSTM, fractional vegetable cover