Prospect, potential and real ability of remote sensing ...iocwestpac.org/files/upload_manual/5_mr.phan Minh Thu.pdf · Prospect, potential and real ability of remote sensing applications

Prospect, potential and real

ability of remote sensing

applications to map habitats and

monitor land use in Vietnam

Phan Minh Thu1,2

Nguyen Tac An1, Michael E. Schaepman3,

Tong Phuoc Hoang Son1, Rik Leemans2, 1: Institute of Oceanography, Vietnam

2: Wageningen University, The Netherlands3: University of Zurich, Switzerland

Remote Sensing for Coastal Habitat MappingThe 8th IOC/WESTPAC International Scientific Symposium, Busan, Republic of Korea, 28-31 Mar 2011

http://www.fordfound.org/news/more/11272000ifp/index.cfmhttp://www.fordfound.org/news/more/11272000ifp/index.cfm

Outline

Introduction

Methods

Case studies

Capacity of RS

Conclusions


Introduction


Introduction

Widely application of remote sensing for land-

use/land cover, coastal habitat and

environmental assessment

Scales of RS images: from molecules to

ecosystems and biomes (reviewed by

Schaepman et al., 2009).


Scale of RS application

(Schaepman et al., 2009).


Application of RS for Coastal zones

Environmental quality: Chl, Primary

production, SST, TSS, optics

Coastal habitats: mangrove forests, coral

reefs, seagrass beds

Economic zoning and management: land use

and monitoring, such as shrimp culture,

urbanization, agriculture


To discuss the potential of possible

applications of remote sensing

techniques to accomplish marine

and coastal habitats in Vietnam

Objectives


Methods


General method

RS images

Pre

-pro

cessin

g s

teps

Cla

ssific

ation

Supervised classification

Post classification

Accuracy assessment

Ground

truth

Them

e m

aps RS maps GIS maps

Overlay maps

Result maps


Case studies


Mangrove changes

Remote sensing techniques and GIS


Mangrove changes in Tra Vinh

SPOT4 (2001) Topo-map (1965)

Mangrove (2001) Mangrove changes

(Phan Minh Thu & Populus, 2007)


Mangrove changes in Ca Mau

(Nguyen Tac An & Phan Minh Thu, 2006)


Ecological zoning in Ca Mau

I. Harvesting

paddy field and

orchards

III. Mixed

shrimp and

mangrove

forest

IV. Mangrove

forest

(Tong Phuoc Hoang Son et al., 2005)


Causes of mangrove degradation

Conversion to agriculture and aquaculture

Fire wood, housing materials

War

Natural disasters (more and more) CC ?


Coral reefs - Mapping

DII technique


Depth Invariance Index method

Reef sites in coastal waters of Vietnam where detected the distribution of CR (TPHS,2010)

Coral reefs distribution

The distributed map of surface sediment in coastal

wates of Quang nam with “sand” sites for DII method

Cu Lao Cham (May 2008)

(Tong Phuoc Hoang Son, 2010)

ALOS – Project PI 326


Coral reefs distribution

Nha Trang Ninh Thuan

(Tong Phuoc Hoang Son et al, 2005)(Tong Phuoc Hoang Son et al, 2007)


Cause of coral reefs degradation

The coral

bleaching event

and mass mortality

of benthos in

Condao during Mid

of October of 2005

(Tong Phuoc Hoang Son et al, 2006)



Acidification and

geothermal activities Runoff and sediment flux




Coastal

development



Land use monitoring

Multi temporal Imageries


Land use 1989 in Nha Trang


Land use 2003 in Nha Trang


Land use classification

Results:

Land u

se

1

10

100

1000

10000

Sa

nd

Se

ttle

me

nt

Ro

ad

/ce

me

nt

Ro

ck/h

ard

Ba

re la

nd

Fo

rest/T

ree

Ma

ng

rove

Cu

ltiv

ate

Aq

ua

cu

ltu

re

Sw

am

p

Are

a (

ha

)

Urban: 10.1%

cultivated land: 4.9%

Aquaculture: 3.0%

Natural lands: mainly distribition

(Phan Minh Thu et al., 2010)


Land use changes

0

500

1000

1500

2000

1985 1990 1995 2000 2005 2010

Year

Are

a (

ha

)

Settlement

Cultivate

Aquaculture

Capacity building

for remote sensing in marine & coastal

habitats and environmental monitoring


Training and trainee

GIS and RS course in Aus-Vietnam project (1997-

1998)

NF-POGO 2004 in India (1 trainee)

NF-POGO 2006 in ION - Vietnam (15 trainees)

NF-POGO 2007 in ION - Vietnam (20 trainees)

Extended NF – POGO in Bermuda ( 2 trainees)

Coming NF-POGO 2011 in IO – Vietnam (Sep –

Oct ) core trainees from previous ones (initial

activity for establishing RS – SEA Network)


Equipment

PRR 2600/2610

10-AU Fluorometer

HPLC

Coming Spectophometers (lab + handle)

Coming Camera system for calibration

Other equipment supporting field studies


Conclusions


Conclusions

Potential application of RS for coastal

habitats in identification of status and

changes

Problems of calibration (Approach of OC and

other instrument and high resolution images)

Validation (ground truth - field methodologies)

Capacity in RS studies

Appication of RS for environmental

monitoring, eutrophication, coastal habitats,

natural disasters


Cảm ơn rất nhiều

Thank you very much

for your attention

Ford Foundation IFP (Vietnam)

Wageningen University (The Netherlands)

ALOS-PI 326 project of JAXA (Japan)

Documents

Prospect, potential and real ability of remote sensing ...iocwestpac.org/files/upload_manual/5_mr.phan Minh Thu.pdf · Prospect, potential and real ability of remote sensing applications