Cara Membuat Peta Tutupan Lahan dengan ArcGIS (by. Denisya Putri)

Summary

In this tutorial, Syahrini, a student from the Geography Science department, demonstrates how to create a land cover map using GIS software (ArcGIS). The process involves steps such as importing satellite bands, transforming coordinate systems, performing image compositing, and clipping the data to administrative boundaries. She also explains the importance of sharpening the image for better clarity and classifying land cover types. The video highlights how to generate a land cover map for Garut, including key benefits like identifying land use, natural resources, and biological phenomena. The tutorial concludes with a discussion on the significance of land cover mapping.

Takeaways

• 😀 The tutorial is about creating a land cover map using GIS software, specifically ArcGIS.
• 😀 The process starts by opening ArcGIS and importing satellite image bands (Band 1-8) for the target area.
• 😀 UTM 49N coordinates are initially used, but the tutorial guides users to change it to UTM 48S for proper alignment.
• 😀 Users are instructed to create a composite by merging the bands of the image.
• 😀 The tutorial demonstrates how to project the image to change its coordinate system.
• 😀 Next, a clipping process is explained to crop the satellite image to administrative boundaries.
• 😀 The properties of the composite image are adjusted, and a color palette is modified for better visualization.
• 😀 The tutorial also covers the process of sharpening the image for more detailed visualization using pansharpening.
• 😀 The classification tool in ArcGIS is activated to classify the land cover types from the image, with options for up to 8 classes.
• 😀 The final output is a land cover map for the Garut area, showing different land types like forests, wetlands, and agricultural land.
• 😀 The benefits of land cover maps include identifying land use patterns, natural resources, and ecological conditions in a given area.

Q & A

What is land cover and how is it represented?

Land cover refers to the physical features found on the Earth's surface, such as forests, wetlands, or urban areas. It is represented by a boundary line that delineates different areas of land cover, which can be natural or man-made.

What is the purpose of the tutorial?

The tutorial aims to demonstrate how to create a land cover map using ArcGIS, which involves processing satellite imagery and classifying different types of land cover.

How do you start the process of land cover mapping in ArcGIS?

To begin the land cover mapping process, you first open ArcGIS and import the relevant satellite data, such as Bands 1-8 for the desired area (e.g., Garut).

Why is it important to check the coordinate system when working with satellite data?

Checking the coordinate system is crucial because it ensures the spatial accuracy of the data. In this tutorial, the coordinates were initially set to UTM 49N, but needed to be transformed to UTM 48S for proper alignment and analysis.

What is the significance of creating a composite image in land cover mapping?

Creating a composite image by combining different satellite bands allows for a clearer and more comprehensive visualization of land cover, making it easier to analyze the different features of the area.

What tool is used to change the coordinate projection in ArcGIS, and why is this step necessary?

The 'Project Raster' tool in ArcGIS is used to change the coordinate projection. This step is necessary to adjust the spatial reference system so that the data aligns with the correct geographic coordinates.

How does clipping the data help in the land cover mapping process?

Clipping the data ensures that the satellite image is restricted to the administrative boundaries of the study area (e.g., Garut), making the analysis more focused and relevant to the region of interest.

What does the term 'pansharpening' refer to, and why is it used?

Pansharpening refers to the process of combining a high-resolution panchromatic image with a lower-resolution multispectral image to enhance the clarity and detail of the final image. It is used to make the land cover map more detailed and visually sharper.

What is the role of image classification in the land cover mapping process?

Image classification categorizes the land cover types (e.g., forests, water bodies, urban areas) based on pixel values in the satellite imagery. This process is essential for identifying and labeling different land cover classes.

What are the benefits of creating a land cover map, as mentioned in the tutorial?

A land cover map helps to determine the extent of different land types, understand the distribution of natural resources, and study biotic phenomena such as vegetation and wildlife in the region.