Applyying Gis And Remote Sensing Technology To Detect Mangrove Forest Cover Change In Ha An District Quang Yen Town Quang Ninh Province In 2000 2014

MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT

VIETNAM FORESTRY UNIVERSITY

STUDENT THESIS

APPLYING GIS AND REMOTE SENSING TECHNOLOGY TO

DETECT MANGROVE FOREST COVER CHANGE IN HA AN

DISTRICT, QUANG YEN TOWN, QUANG NINH PROVINCE

IN 2000 - 2014

Major: Advanced Curriculum in Natural Resources Management

Code: D850101

Faculty: Forest Resources and Environment Management

Student: Nguyen Vu Bach Student ID: 1054010901

Class: K55 Natural Resources Management Course: 2010 – 2014

Advanced Education Program

Developed in Collaboration with Colorado State University, USA

Supervisor: Asso.Prof. Tran Quang Bao Ph.D.

Ha Noi, November 2014

TABLE OF CONTENTS

INTRODUCTION ................................................................................................................. 1

I. LITERATURE REVIEWS ............................................................................................... 3

1.1. Climate change: .............................................................................................................. 3

1.2. Roles of Mangrove forest: .............................................................................................. 3

1.3. Remote sensing:.............................................................................................................. 4

II. OBJECTIVES AND METHODOLOGY ......................................................................... 7

2.1. Objectives....................................................................................................................... 7

2.2. Scopes............................................................................................................................. 7

2.3. Methods: ......................................................................................................................... 7

2.3.1. Data Sources: ............................................................................................................. 7

2.3.2. Field survey method:.................................................................................................. 8

2.3.3. Image classification method..................................................................................... 10

2.3.4. Method mapping fluctuations mangrove forests:..................................................... 10

2.3.5 Characteristics of Landsat images for the study area: ................................................ 10

2.3.6 Fluctuations of mangrove forests in 2000 – 2014: ..................................................... 14

III. RESULTS..................................................................................................................... 17

3.1.Processing mangrove forest area ................................................................................... 17

3.2. Mapping mangrove forest in Ha An over time ............................................................. 18

3.3. Evaluating the accuracy of Landsat image interpretation methods.............................. 19

3.4. Fluctuations mangroves in 2000 – 2014....................................................................... 20

3.3. Cause of fluctuations mangrove period 2000 – 2014: .................................................. 22

IV. DISCUSSION............................................................................................................... 23

V. CONCLUSION............................................................................................................... 24

LIST OF ACRONYMS

Notation Meaning

NDVI Normalized Difference Vegetation Index

OLI Operational Land Imager

TIRs Thermal Infrared Sensor

LIST OF TABLES

Table Name Page

2.1 Landsat Data used for data analysis 7

2.2 The specifications of the Landsat images 12

3.1 Mangrove forest area each year in the study area 19

3.2 Evaluation accuracy table in 2014 19

3.3 Fluctuation mangrove in 2000 - 2005 20

3.4 Fluctuation mangrove in 2005 – 2010 20

3.5 Fluctuation mangrove in 2010 - 2014 20

LIST OF FIGURES

Figure Name Page

2.1

Location of studied areas: Viet Nam, Quang Ninh province, Quang

Yen town, Ha An district.

8

2.2

Overview classification methods and image processing of Landsat

remote sensing

9

3.1 Landsat 8 satellite image of study area in 2014 13

3.2 Studied area in year 2000, 2005, 2010 and 2014 14

3.3 NDVI of studied area in each year 15

3.4 NDVI of mangrove in each year 16

3.5

Distribution of coastal mangroves overtime in Ha An district, Quang

Yen Town, Quang Ninh

17

3.6 Location of 20 points in the field to check the accuracy in 2014 18

3.7 Maps of mangroves fluctuation periods 2000 - 2005, 2005 - 2010, 2010 - 2014 21

3.8 Fluctuations of mangroves period 2000 – 2014 21

1