Nguyễn Đức Thuận1 Khoa Quản lý Đất đai, Học viện Nông nghiệp Việt Nam.
Từ khóa: Chỉ số NDVI, NDVI, ứng dụng, diện tích, đất lúa, Vụ Bản, Nam Định
NDVI index application to determine the area of rice in Vu Ban district, Nam Dinh province in 2016
Nguyen Duc Thuan
Due to the composition of objects on the Earth’s surface is different, the absorption or emission of electromagnetic waves is different, just like vegetation, each different plant also absorbs and emits electromagnetic waves differently. So on the basis of remote sensing data we can identify the different spectral characteristics of the plant. These characteristics as a basis for building up vegetation index (NDVI) is separated from the near – infrared channel and the red channel. Through calculating NDVI data from Landsat – 8 dated 04.23.2016 for the region Vu Ban district, Nam Dinh province and linear stretch the NDVI values for the water surface is from 115 to 150, vacant land is 151, building land from 152 to 170, rice field from 171 to 187, soil color from 182 to 185, perennial crops and protection forest from 188 to 197. Since then statistical area of paddy land is 8883.14 hectares in Vu Ban district accounting for 59.93% and 52.01 ha deviated compared to the actual area obtained locally.
Keywords: GIS, NDVI, remote sensing…
Người phản biện: PGS.TS. Ngô Đức Phúc
Ngày nhận bài: 10/7/2016
Ngày thông qua phản biện: 27/7/2016
Ngày duyệt đăng: 05/8/2016