Application Of Remote Sensing And Gis For Forest Cover Change Detection In Ngoc Hien District Ca Mau Province 1990 2016

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ACKNOWLEDGEMENT

The success and result of this project required a lot of guidance and assistance from

many people and I am extremely fortunate to have this all along the completion of my project

work. Whatever I have done is only due to such guidance and assistance and I would not

forget to thank them.

A special thanks to Assoc. Prof. PhD. Phung Van Khoa, who advised us throughout

this study. Without his enthusiasm and advice, it is unlikely this work would have been

completed and for that we are truly grateful.

I am thankful to and fortunate enough to get constant encouragement, support and

guidance from teachers in Vietnam National University of Forestry.

I would like to thank the staffs and foresters in the Dat Mui and Nhung Mien

Mangrove Forest Management Board for their support and assistance.

Students:

Trinh Nam Phong

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ABSTRACT

Ngoc Hien is known as the southernmost rural district of Ca Mau, Vietnam with the

extensive mangrove forest areas and availability. Therefore, the detection of forest cover

change annually is very necessary in order to have sensible management methods. Through

researching, we recognized that the flora in Ngoc Hien is quite abundant and mostly is

mangrove species. The mangrove forest area increases continuously through periods 1990 –

1995 – 2016. The forest lost area decreased significantly from 1995 to 2016. It proves that

local people in Ngoc Hien have had more awareness about protecting forest. The application

of RS and GIS to detect mangrove forest cover changing is very useful. It helps us to shorten

the time to research and give us the high accurate results.

Keywords: Remote sensing; Forest Cover Change; application of GIS; construct

map…

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ACRONYMS

RS: Remote Sensing

GIS: Geographical Information System

TM: Thematic Mapper

MSS: Multi-spectral Scanner

SPOT: Satellite Probatoire d'Observation de la Terre

NDVI : Normalized Difference Vegetation Index

ENVI : Environment for Visualizing Images

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CONTENTS

CHAPTER I. INTRODUCTION ........................................................................................... 1

CHAPTER II. LITERATURE REVIEW ................................................................................ 3

2.1. General definition about Remote Sensing and GIS .......................................................... 3

2.2. Application of Remote Sensing and GIS.......................................................................... 3

CHAPTER III. OBJECTIVES, CONTENTS AND METHODOLOGY ................................. 6

3.1. Goal and objectives: ........................................................................................................ 6

3.1.1. Goal: ............................................................................................................................ 6

3.1.2. Objectives: ................................................................................................................... 6

3.2.Contents: .......................................................................................................................... 6

3.2.1. Collecting materials related to the status of forest cover in Ngoc Hien (Ca Mau) in the

period (1990 - 1995- 2016) .................................................................................................... 6

3.2.2. Construct map and detect forest cover change in Ngoc Hien in the period (1990 - 1995-

2016) ..................................................................................................................................... 6

3.2.3. Propose some solutions for effective and sustainable forest managing and using in Ngoc

Hien (Ca Mau) ....................................................................................................................... 7

3.3.Methodology: ................................................................................................................... 7

3.3.1.Collecting materials related to the study ........................................................................ 7

3.3.2.Image Acquisition and Pre-processing ........................................................................... 7

3.3.3.Software ........................................................................................................................ 8

3.3.4.Image Interpretation ...................................................................................................... 8

3.3.5.Fieldwork .................................................................................................................... 21

CHAPTER IV. NATURAL AND SOCIOECONOMIC CHARACTERISTICS OF THE

STUDY SITE ...................................................................................................................... 24

4.1. Natural characteristics ................................................................................................... 24

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4.1.1. Geography .................................................................................................................. 24

4.1.2. Terrain ....................................................................................................................... 25

4.1.3. Climate....................................................................................................................... 25

4.1.4. Hydrology .................................................................................................................. 25

4.1.5. Natural Resources ...................................................................................................... 25

4.2. Socioeconomic characteristics ....................................................................................... 26

4.2.1. Social characteristics .................................................................................................. 26

4.2.2. Economic characteristics ............................................................................................ 26

4.3. Mangroves and roles of mangroves in Ngoc Hien- Ca Mau ........................................... 26

Chapter V. RESULTS .......................................................................................................... 28

5.1. Results of fieldwork combine with interpret Landsat image ........................................... 28

5.2. Forest cover change map in periods 1990 – 1995 – 2016 ............................................... 37

5.2.1. Forest cover change map in 1990................................................................................ 37

5.2.2.Forest cover change map in 1995................................................................................. 38

5.2.3. Forest cover change map in 2016................................................................................ 40

5.3.Reason causing forest cover change in Ngoc Hien district and solutions ......................... 41

5.3.1. Reason causing forest cover change in Ngoc Hien district .......................................... 41

5.3.2.Propose solutions ........................................................................................................ 42

Chapter VI. CONCLUSION, LIMITATION AND FUTHER STUDY ................................. 44

6.1. Conclusion .................................................................................................................... 44

6.2. Limitation and further study .......................................................................................... 44

REFERENCES