2000-2020年三江源地区30米生态环境质量数据集

三江源地区30米生态环境质量数据集涵盖了三江源地区2000年-2020年每五年一期的生态遥感指数（RSEI）栅格数据。数据扩大10000倍保存为整型，值域0-10000，使用时先转浮点型数据再除以10000得到正常生态环境质量指数。
该数据集基于Landsat影像计算四个分量，采用主成分变换构建遥感生态指数（RSEI）。使用该数据集可以对三江源地区的多年期生态环境质量进行高空间精度的监测和动态分析，旨在揭示该地区的生态环境质量细致的时空变化特征，及时、准确地掌握三江源地区生态环境质量状况及其变化态势，为该地区生态保护政策的制定及生态工程成效的评估提供科学依据和技术支持，从而促进该地区经济、社会、资源和环境的可持续发展。

The 30-meter eco-environment quality dataset of the Three-River Source Region includes raster data of the Remote Sensing Ecological Index (RSEI) at 5-year intervals for the period 2000–2020. The data is scaled up by 10,000 times and stored as integer type, with a value range of 0–10,000. When using the dataset, it should first be converted to floating-point type and then divided by 10,000 to obtain the standard eco-environment quality index.
This dataset calculates four spectral components based on Landsat imagery, and constructs the Remote Sensing Ecological Index (RSEI) through principal component transformation. Using this dataset enables high-spatial-precision monitoring and dynamic analysis of the multi-temporal eco-environment quality in the Three-River Source Region. It aims to reveal the detailed spatiotemporal variation characteristics of the eco-environment quality in this region, timely and accurately grasp the status and changing trends of the eco-environment quality in the Three-River Source Region, provide scientific basis and technical support for the formulation of local ecological protection policies and the evaluation of ecological engineering effectiveness, so as to promote the sustainable development of the regional economy, society, resources and environment.