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GIS as a system composed of several components; namely hardware, software, data and geographic information, and management.
2.5. Remote Sensing
Remote sensing is a technique to gather information of the object and its environment from a distance without physical touch. The main purpose of remote
sensing is to collect data on natural resources and environment. This technique usually produces some forms of the image further processed and interpreted to
produce useful data for applications in agriculture, archeology, forestry, geography, geology, planning and other fields Lo, 1995.
According to Lilesand and Keifer 1994 in Wijaya 2005 remote sensing involves two main processes of data collection and data analysis. The elements of the
data collection process include: a source of energy, b energy traveling through the atmosphere, c the interaction between energy with the appearance on the earth, d the
sensor aircraft and spacecraft or satellite, and e the results in the establishment of data and pictorial form or shape numeric. The use of sensors to record a variety of
electromagnetic energy emitted and reflected by the appearance on the earth. The process of data analysis involves the testing data by using interpretation tools and
observation tools for analyzing pictorial data and computer to analyze sensor data with the numeric data assisted by the reference of the resource studied.
2.6. Remote Sensing and GIS Applications
Needs of remote sensing technology combined with GIS for the purpose of inventory and monitoring is very important, especially when associated with the
collection of data quickly and accurately. Besides collecting data by remote sensing technology can reduce or even eliminate the influence of subjectivity. Remote
sensing and GIS can be combined to enhance the capabilities in terms of data collection, data manipulation, data analysis and provides integrated spatial
information Wahyunto, 2007.
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Application of remote sensing is used to obtain information relating to the condition of vegetation cover andor current land use obtained by interpretation of
satellite imagery. By such process it was obtained the information of distribution and the condition of permanent land cover and vegetation. Remote sensing is a
technology that can be utilized to provide the latest maps with time, effort and costs which are relatively smaller for a very wide area Sulistyo, 2004
GIS has an important role in various aspects of our recent life. Through GIS, a variety of information can be processed and analyzed and then linked to its location
on the earths surface. GIS can be used to help in managing agricultural and plantation resources such as in expanting the area of plants, trees, or waterways. In
addition, GIS could also be used to establish the crop, to develop the rotation of cropping systems, and to perform the calculations on an annual basis against soil
degradation occurs due to differences in seeding, planting, or the techniques used in the harvest. GIS is also used for mapping areas and farmland. By the mapping we can
detect whether the land is worth to be planted or not.
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III. METHODOLOGY
3.1. Time and Location
The research was conducted in Tanah Laut Regency, consisting of 11 counties, from December 2010 up to May 2011. Data processing and analysis
performed at the Laboratory of Remote Sensing and GIS Master of Science in Information Technology MIT, Bogor Agricultural University, while the data
collection and field surveys was conducted in the Regency of Tanah Laut. Tanah Laut Regency, is situated 114
o
30’20 - 115
o
23’31 East and 3
o
30’33- 4
o
11’38 South and has an area of 3,631.35 km
2
. Average temperature is 20,1
o
C – 34
o
C and humidity is 80-83. The area is dominated by low-sloping plains that stretched
from West to East and undulating to mountainous areas in land from the south. Tanah Laut Regency is known
as a center for cattle because nearly 40 of meat in South Kalimantan is supplied from this regency.
Figure 1. Tanah Laut Regency
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3.2. Data and Tools Secondary data was collected from various sources including the Livestock
Office of Tanah Laut Regency and South Kalimantan Provincial Livestock Office. Other data used are Indonesia Topographical Map scale 1: 50.000 and Landsat TM
7 imagery of 2010. The Landsat TM 7 imagery was processed by using ER Mapper 6.4, and
visualization of the availability of animal feed using ArcGIS 9.2 ESRI Inc.. All vector data were projected to the Universal Transverse Mercator UTM coordinate
system. The 50S zone with the World Geodetic System WGS 1984 datum was selected and applied.
Tabel 1. Types and Sources of Secondary Data No Data Types
Scale Year
Form Data Data source 1.
2. 3.
Tanah Laut Regency RBI
Map Landsat TM 7
Livestock population
data 1 : 50.000
30x 30 m 2007
April 16
th
2010 2010
Digital Digital
Tabular Bakosurtanal
BTIC-landsat imagery
provider Animal
Husbandry Office of Tanah
Laut Regency
3.3
.
Research Framework
This study was commenced with the processing of Landsat TM7 using supervised classification, and then was validated by using the ground check data. The
results were used as a reference for mapping potential areas and determine the level of availability of fodder
.
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Figure 2. Research Framework
3.4. Methods 3.4.1. Ground Check
