<b>Assessment of Ecological Environment Quality in the Qilian Mountain National Nature Reserve Based on a Modified Remote Sensing Ecological Index</b>

Ecological environment change are critical issue in global environmental protection research. Examining the spatiotemporal dynamics and underlying drivers of regional Ecological Environment Quality(EEQ) is fundamental for supporting the sustainable management of ecosystems. To evaluate the spatiotemporal dynamics of EEQ in the Qilian Mountain National Nature Reserve(QMNNR) from 1986 to 2023, this study constructed an Modified Remote Sensing Ecological Index(MRSEI) on the GEE and incorporated the PLUS model.