Present at On of G1 by T P Toung, IRRI

7/31/2019 Present at On of G1 by T P Toung, IRRI

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G1 BWDB IRRI IWM LGED - SRDI

BWDB IRRI IWM LGED SRDI

Project G1: Resource profiles,

extrapolation domains and landuse patterns

Bangladesh Water Development BoardInternational Rice Research Institute

Institute of Water ModellingLocal Government Engineering Department

Soil Resource Development Institute


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Content

Introduction

Progresses and outputs

Work plan Conclusions


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Work PackagesWP1 Geodatabase of the coastal zone

Identification and acquisition of dataInventory of metadata and data format agreementsDatabase development and documentation

WP2 Characterisation of test sites and poldersGeo-referencing of test sitesIdentification of key site characteristics and resource profiles of trialsIdentification of links between geodatabase layers and sitesLand cover / land use maps and temporal water and soil salinity mapping

WP3 Extrapolation domains for new technologiesIdentification of areas suitable for new technologies and the policies or decisions thatwould be necessary to enable those technologies to succeedRoundtable discussion with partners on extrapolation method and preliminary results

Final domain maps generated and evaluated with partners and LGOsWP4 Land use plans under future hydrological scenariosPreparation of current land-use plansIdentification of future scenarios and drivers of changeMulti criteria land-use modelingRoundtable discussion with partners on preliminary resultsFinal land-use modelsEvaluation and synthesis of land-use maps


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Change in Knowledge, Attitude and/or

SkillsChange in Practice / Behaviour Impact

Project outputs

Compilation of a geodatabase

covering all thematic spatial

information related to the project,

including characterization of the

test sites and study areas

Learn about new technologies and

where its chances of adoption is

greatest.

Use of domain maps as a decision

support tool to more effectively

scale up the adoption of new

technologies

Extrapolation domains for each

technology

Land-use plans based on

trends,constraints, and

interventions

Increased chances of

appropriate technology

adoption and likelihood of

adoption of sustainableland and water use

policies.

Local GO and extension agents responsible for water resource and land

management and land use zoning.

OUTCOMES

Use the maps as decision support

tools when planning future

interventions.

Local GO and extension agents responsible for agricultural technical

innovations

Understand the implications of different

land use plans under different future

scenarios.

Expected Outcomes/Impact


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Outputs & Progress - IRRI

Medium resolution seasonal rice maps published

Rice cropping patterns in Bangladesh (2012) Murali KrishnaGumma, Andrew Nelson, Aileen Maunahan, Prasad S.Thenkabail, and Saidul Islam. Rice Today, Vol 11, No 1

Mapping seasonal rice in a high cropping intensity environmentof Bangladesh using MODIS time-series data and spectral

matching techniques (submitted) Murali Krishna Gumma, AndrewNelson, Aileen Maunahan, Prasad S. Thenkabail, and Saidul Islam.ISPRS Journal of Photogrammetry and Remote Sensing


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These will be compared with 2004 rice area maps from SRDIand then updated with high resolution land use maps in 2012


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Study sites georeferenced

Polder 3

Aquaculture to Aqua+Rice

or Aqua + Aqua

Polder 30

Intensification from one to

two/three crops

Polder 43/2f

Intensification from

one/two to three crops


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Outputs & Progress - LGED

Mouza boundaries fortarget polders

Smallest geographicunit for Bangladesh

Vital for detailed

socio-economiccharacterizationusing 2001 or 2011census data

Also necessary forgeo-locatinghousehold survey

data that does nothave GPScoordinates

Selected mouza boundaries overlaid on polders


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Outputs & Progress - IWM

Regular monitoring ofwater salinity onalternate days, low andhigh tide

Salinity, water level and other monitoring in the coastal zone


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All Salinity monitoring location in the River of G4 & G1 project

16 Monitoring

Stations


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POLDER-30

0.02.0

4.06.08.0

10.012.014.016.018.020.022.0

17-May-1

1

1-Jun-1

1

16-Jun-1

1

1-Jul-11

16-Jul-11

31-Jul-11

15-Aug-1

1

30-Aug-1

1

14-Sep-1

1

29-Sep-1

1

14-Oct-11

29-Oct-11

13-Nov-1

1

28-Nov-1

1

13-Dec-1

1

28-Dec-1

1

12-Jan-1

2

27-Jan-1

2

11-Feb-1

2

26-Feb-1

2

12-Mar-12

-

r-

Salinity

(ppt)

Date

Polder 30 (Station-1, Sholmari river)

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

17-

May-1

1

1

-Jun-1

1

16

-Jun-1

1

1-Jul-11

16-Jul-11

31-Jul-11

15-Aug-1

1

30-Aug-1

1

14

-Sep-1

1

29

-Sep-1

1

14

-Oct-11

29

-Oct-11

13-Nov-1

1

28-Nov-1

1

13-Dec-1

1

28-Dec-1

1

12

-Jan-1

2

27

-Jan-1

2

11

-Feb-1

2

26

-Feb-1

2

12-Mar-12

-

r-

Salinity(ppt)

Date

Polder 30 (Station-2, Pussur river)

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

17-May-1

1

1-Jun-1

1

16-Jun-1

1

1-Jul-11

16-Jul-11

31-Jul-11

15-Aug-1

1

30-Aug-1

1

14-Sep-1

1

29-Sep-1

1

14-Oct-11

29-Oct-11

13-Nov-1

1

28-Nov-1

1

13-Dec-1

1

28-Dec-1

1

12-Jan-1

2

27-Jan-1

2

11-Feb-1

2

26-Feb-1

2

12-Mar-12

-

r-

Sali

nity

(ppt)

Date

Polder 30 (Station-3, Pussur river)

0.0

2.04.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

20.0

17-May-1

1

1-Jun-1

1

16-Jun-1

1

1-Jul-11

16-Jul-11

31-Jul-11

15-Aug-1

1

30-Aug-1

1

14-Sep-1

1

29-Sep-1

1

14-Oct-11

29-Oct-11

13-Nov-1

1

28-Nov-1

1

13-Dec-1

1

28-Dec-1

1

12-Jan-1

2

27-Jan-1

2

11-Feb-1

2

26-Feb-1

2

12-Mar-12

27-Mar-12

Sa

linity

(ppt)

Date

Polder 30 (Station-4, Jhapjhapia river)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

16-Jun-1

1

1-Jul-11

16-Jul-11

31-Jul-11

15-Aug-1

1

30-Aug-1

1

14-Sep-1

1

29-Sep-1

1

14-Oct-11

29-Oct-11

13-Nov-1

1

28-Nov-1

1

13-Dec-1

1

28-Dec-1

1

12-Jan-1

2

27-Jan-1

2

11-Feb-1

2

26-Feb-1

2

12-Mar-12

27-Mar-12

Salinity

(ppt)

Date

Inside Polder 30 (Station-5, Kharia Khal)


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Salinity monitoring locations in the River of ongoing projects (IWM, BWDB, World bank)

31 Monitoring

Stations


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BWDB Rainfall and Evaporation stations in the Coastal Area


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BWDB Salinity stations in the Coastal Area


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Outputs & Progress - SRDI

In the three target polders

there are four soil salinitymonitoring sites which aresynchronized withIWM water salinitymonitoring sites. [Polder 3,

30, 43/2F]

Soil Salinity monitoring at Project sites


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Outputs & Progress - SRDI

We continue monitoring soil salinity in 65 SRDI-sites distributed allover the coastal zone. In most places we take one sample each

site per month. But from March to May we monitor twice amonth.

We are measuring salinity of surface (015 cm) and sub surface(1530 cm) soil

Soil Salinity monitoring of SRDI-networks


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Outputs & Progress - SRDITopsoil EC (dS/m) of greater Khulna district.

Site. 14A, Location: Krishnanagar, Batiaghata. Soil series: Bajoa, MHL,

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

18.00

J F M A M J J A S O N D

2001

2002

2003

2004

2005

20062007

2008

2009

Peak soil salinity


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Outputs & Progress - SRDIMaps of various soil parameters

2009SoilSalin

itymap(tobeupdatedin2012

)


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Metadata inventory and reports on coastal polder activities

Provision of metadata of available information

Information on water level, recharge, constraints, gates, etc.

Other stations measuring salinity and water flow?

Surface and ground water assessments

Coastal Embankment Improvement Project report

Future activities - BWDB


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Provision of transport network and census data Road network map including market locations

Census questionnaire and parameters Census data, socio-economic data at Mouza level Description of ongoing LGED activities and development plans

for polders and coastal region

Future activities - LGED

G1


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Land use mapping/salinity mapping and domain methodology Continue the monitoring of soil salinity in 65 stations

Detailed soil survey in April 2012 Provision of the methodology for the detailed salinity maps

2009/12 Provision of rice area map for 2004 (pre cyclone assessment) Provision of maps of land types and associates Provision of soil texture map Acquisition of district level crop calendars

Future activities - SRDI

G1


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Hydrology, Water level and salinity mapping Continue the monitoring of water salinity and level

Maps of maximum water salinity and its interpolation methods Water salinity threshold maps showing the date of start and end

dates of 1 ppt and 4 ppt for 2010, 11 and 12

Minimum and maximum water levels and maps assessingpotentials of gravity irrigation and drainage for three polders Acquisition of metrological dataTemp, Rainfall, Humidity and

evaporation Acquisition of rainfall days data for December 2008 to May 2009

for correct interpretation of monthly soil salinity measurements

Future activitiesIWM (1)

G1


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Climate change impacts and Scenarios (From G4)Impact of climate change on coastal zoneincrease intemperature, high rainfall..2030-2050 (15-18 months)Scenarios of external hydrological drivers (CC, Upstream flows, SLR)

Future activitiesIWM (2)

G1


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Sharing data/information with Partners Inventory of satellite data

Provision of remote sensing imagery to G1 partners Provision of Bangladesh poverty map and mediums resolution

rice area map to G1 partners

Future activitiesIRRI (1)

G1


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Land use mapping/salinitymapping and domainmethodology

Detailed land covermapping for 2009 and 2012

Development of improvedsoil salinity index/mappingusing remote sensing.Testing and validated with

SRDI data Draft of methodology for

extrapolation domains

Future activitiesIRRI (2)


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Conclusions

Much progresses have been made, despite of 12-month delayin recruitment of a GIS and land use modelling specialist at theIRRI Dhaka office.

Position should be filled in May/June 2012

This has delayed outputs by ~ 6 months . Revised G1milestones and timelines have been submitted to CPWF

By the end of 2012: Complete WP1 and WP2 and start on WP3

G1


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Thank you


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Reflections on GBDC At the start of the GBDC we postulated that cropping intensity

& diversification in polders 3, 30, 43/2/F can be greatlyenhanced. Our work in the last year strengthen our belief:there is huge potential

We are making good progress on the soft side of thecommunity-based water management, but software alonecan not work if the hard ware is out of dateand it iscompletely out of date. Rehabitation is not adequate, theyneed redesigned according to theirnew roles.

Roles of the polder have to be revised to serve the newcropping systems, which varies accordingly the polderssome cases opposite to their original functions e.g. intakesaline water instead of salinity control

The real possibility of increasing cropping intensity anddiversification rest on having adequate development funds torevamp the water management of the polders. Great to seemany on going/being planned work by LEGD, BWDB on the

poldersquestion: how we can join hand with these GO in


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Reflections on GBDC zonation (at regional level and within polders) is

fundamental in solving conflicts between agriculture andbrackish water aquaculture as well as between high landand lowland. zonation/land use maps to be developed byGBDC will be useful for the GOB coastal zone planning anddevelopment.

How do we incorporate community-based management into the zoning/land use mapping?

Preliminary results from homestead survey reveal theimportance of homestead economy (homestead area ~ 20%of total land area) we may have to focus more onhomestead, especially on livelihood of the tenants??

Documents

Present at On of G1 by T P Toung, IRRI