Long time series ecological function map of Qinghai Tibet Plateau (1990-2020)- A Big Earth Data Platform for Three Poles

1) Data content: the modified universal soil and water loss equation (RUSLE) is used to estimate the soil water erosion modulus at the plot scale. The soil conservation is used to measure the ability of the ecosystem to reduce soil erosion caused by precipitation, and to characterize the amount of water erosion reduction caused by vegetation, that is, the difference between the amount of soil water erosion under actual surface coverage and extreme degradation. Based on the above process, a 30-year (every five years from 1990 to 2020) ecological function map of the Qinghai Tibet Plateau is made, including two parts of water conservation and soil conservation data sets.

2) Data source and processing method: Based on ecosystem type data, MODIS NDVI products, 1:1 million soil attribute data, meteorological interpolation and elevation data, the atlas uses the precipitation storage method to estimate the water conservation of forest and grassland ecosystems, and measures its water conservation capacity by the hydrological regulation effect of ecosystem, that is, the increment of water conservation compared with bare land.

3) Data quality: the data has a temporal resolution of 5 years and a spatial resolution of 1000m, which can meet the needs of high-precision Ecosystem Assessment on the Qinghai Tibet Plateau.

4) Data application achievements and prospects: the statistical results show that in recent 30 years, the spatial distribution of water conservation work energy on the Qinghai Tibet Plateau has shown an overall distribution pattern of high in the southeast and low in the northwest, and gradually decreasing from the southeast to the northwest. The overall amount of soil conservation showed an increasing trend in fluctuation, and the amount of soil conservation function showed a decreasing trend in most areas of the West and south, of which the decreasing trend was obvious in the South and the increasing trend in the East.

File naming and required software

File naming: stored in TIF format, the file name is "XX yyyy. TIF", where XX represents the function item, such as WS for water conservation, SC for soil conservation, yyyy for year, such as ws-2020 TIF represents the distribution map of water conservation function of Qinghai Tibet Plateau in 2020.

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Cite as:

Cao, W., Huang, L. (2021). Long time series ecological function map of Qinghai Tibet Plateau (1990-2020). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Terre.tpdc.271899. CSTR: 18406.11.Terre.tpdc.271899. (Download the reference： RIS | Bibtex )

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

Support Program

Second Tibetan Plateau Scientific Expedition Program

Copyright & License

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License： This work is licensed under an Attribution 4.0 International (CC BY 4.0)