Compare Result of Soil Moisture Distribution using Tasseled Cap Transformation and Topographic Wetness Index

摘要

Availability of water will determine the type of plants and agriculture, so the water has a very important role for agricultural. Water needs to be converted into soil moisture before it is absorbed by plants. Soil moisture is the water contained in the soil are bound by various kakas (matrix, osmosis, and capillaries). The moisture content of the soil can be determined using the spectral approach of remote sensing imagery and the topography of an area. This study aims to determine the distribution of soil moisture using Tasseled Cap transformation and Topographic Wetness Index (TWI). The Tasseled Cap Transformation method used to obtain spectral information about the soil wetness index. For knowing moisture content of the soil, topographic aspect derived from TWI. The results of this research is the best method of estimating soil moisture in Magelang Regency.