Selasa, 22 Juli 2008

Aqua MODIS - Vegetation Index

THE WET AGRICULTURE LAND IDENTIFICATION WITH AQUA MODIS IMAGERY IN JAVA ISLAND USING TRANSFORMATION OF VEGETATION INDEX

ABSTRACT


Aqua MODIS image is one remote sensing image that is relatively new images, which has 36 bands i.e. band 1 to band 7 of the imagery has the ability to observe the land. Aqua MODIS imagery represents the land information in global scale; therefore, the entire of Java Island is selected as the research area. Aims of this research were to investigate the Aqua MODIS ability in identifying the wet agricultural land based on NDVI (Normalized Difference Vegetation Index) transformation and EVI (Enhanced Vegetation Index) and to analyze the comparison of vegetation greenness level as the EVI and NDVI transformation results in wet agricultural land.

This research used Aqua MODIS image acquire remotely sensed on September 30, 2007 that has spatial resolutions at 1B level are 250 m and 500m. The other primary data that had been used was wet agricultural land data as the recently result of field checking. There were 150 samples taken using purposive sampling method. In order to assist the multispectral classification, the land cover map had been used as the supporting data. The applied method vegetation index transformation, with the formula: NDVI = (Rnir – Rred)/ (Rnir + Rred) and EVI = [(1.5 + L)*(Rnir – Rred)] / (L + Rnir + 6*Rred – 7.5*Rblue).

The result of the research displayed that the red band (0.62-0.67 μm), near infrared band (0.841-0.876 μm) and blue band (0.459-0.479μm) of the imagery were able in representing the information of wet agricultural land distribution using vegetation index based on vegetation greenness level. The relationship between vegetation greenness level as the EVI and NDVI transformation results in wet agricultural land are that EVI has higher correlation value namely r=0.887, than NDVI has, namely r=0.873, and the greenness level of wet agricultural land can be diverged sharper by the EVI imagery than NDVI one.
Keywords : Aqua MODIS, Wet Agricultural Land, Vegetation Index Transformation, Java Island, vegetation greenness level, NDVI, EVI


Sumber :
Setyaningrum, Nugraheni (2008). Citra Aqua MODIS Untuk Identifikasi Lahan Pertanian Basah di Pulau Jawa dengan Transformasi Indeks Vegetasi. Skripsi. Yogyakarta: Fakultas Geografi UGM

1 komentar:

  1. can i see your maps from aqua modis index vegetaion?

    BalasHapus