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The objective of the study is to assess changes of FVC in some urban and sub-urban areas of Hanoi city 2007 to 2015 based on a two endmember spectral mixture analysis (SMA) model using multi-spectral and multi-temporal LANDSAT TM and OLI images. FVC was estimated for the years of 2007 and 2015 by means of two endmember SMA based on NDVI, the assessment of FVC changes was finally carried out. The study results show that: FVC was decreased with the total area of 699.8 km 2 , accounting for 75.5% of total area, decreased by 87.5 km 2 per year in Soc Son’s south, Dong Anh’s east, Gia Lam’s east and Thanh Tri’s west; some areas had medium and weak decrease rate such as Cau Giay, North and South -Tu Liem and Soc Son’s west; total area of almost unchange in FVC was 184.5 km 2 , accounting for 19.9% , occurring mainly in Ba Dinh, Dong Da, Hoan Kiem; only 44.9 km 2 was increased, accounting for 4.9% of total area, only 5.6 km 2 per year, mainly concentrated in the district of Hoang Mai, noth-eastern Soc Son, Dong Anh’s south.

tạp chí khoa học đại học quốc gia hà nội: nghiên cứu giáo dục  (vnu journal of science: education research)/tạp chí khoa học đại học quốc gia hà nội: các khoa học trái đất và môi trường (vnu journal of science: earth and environmental sciences)

Đánh giá biến động độ che phủ thực vật tại một số khu vực đô thị và ven đô Hà Nội từ tư liệu ảnh vệ tinh LANDSAT đa phổ và đa thời gian