id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-31428	Sun, Yujun	Spatiotemporal Variation of Vegetation Coverage and Its Driving Factors in the Beijing-Tianjin-Hebei Region Based on the Google Earth Engine Platform	2025	9	.pdf	application/pdf	4795	209	42	The calculation formula is as follows: slope median FVC FVC 𝑗 𝑖 ∀𝑗 𝑖 (2) Under the dual pressures of global climate change and intensive human activities, vegetation cover has become an “indicator” of ecosystem response and resilience at the regional scale [2].	cache/ajst-31428.pdf	txt/ajst-31428.txt