Land resource management of coastal areas in Indian cities: Comparative assessment with prevailing methodsRavinder Dhiman1, Pradip Kalbar1, 2, Arun B. Inamdar2, 3

1Centre for Urban Science and Engineering 2Interdisciplinary Program in Climate Studies 3Centre of Studies in Resources Engineering

Indian Institute of Technology BombayMumbai, 400076 – India Email: rdhiman@iitb.ac.in

Ü Introduction

Ü Motivation and problem definition

Ü Methods

Ü Data processing and study area

Ü Description of Coastal Area Index model

Ü Validation

Ü Results

Ü Conclusion2

Contents

Urban infrastructure;Port activities;Offshore drilling;Aquaculture;Tourism;

Mangrove system;Seagrass system; Sandy beach systems;Coral reef systems;Estuary systems;

Introduction

Coastal degradation

Livelihood security Development

Coastal Regulation Zone (CRZ) Notifications

The Environment (Protection) Act, 1986

Regulated inclusion of activities

1981 Advisory to coastal states1991 CRZ notification 19911992 BB Vohra committee

1994 Allows construction along WB199620002002

Increase in FSI for SRAmended to permit non-polluting industries in CRZ of SEZs; rare mineral mining permitted

2004 MSS by MoEFCC after effects of tsunami

2011 CRZ 2011;

2012 OM allowing projects in violation 2014 Karnataka, Kerala and Maharashtra

request amending CRZ 2011 for urbanization and tourism needs

2015 Sailesh Nayak Committee amended to allow resorts and hotels in CRZ II; LR allowed

2018 CRZ 20184

Genesis of CRZ

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Challenges and Issues with CRZ

Source: Maharashtra Coastal Zone Management Authority (MCZMA)

6All the classic geomorphological features and urban signatures are available

Data Type SourceLULC Landsat 8Coastal Slope SRTMCoastal Elevation SRTMNDVI Landsat 8Geology Survey of IndiaSoil Survey of IndiaCRZ Boundaries GIS Maps from MCZMA

Study area and data processing

Layer Weights (Wj)

Utility FunctionLULC

NDVI

DEM

Slope

Geology

Soil

Pixel Values

Layer n

Layer 1

Layer 2

Layer j

m

2

..

.

..

1

6..

. .3

.

.

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Coastal Area Index (GIS coupled MCDM approach)

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Methodology framework

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Validation at Case Location 1

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Results (Case Location 1 – Predominantly Urban)

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Results (Case Location 2 – Predominantly Rural)

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Results (Case Location 3 – Undeveloped area)

Ü Current CRZ guidelines are unable to deliver the expected outcomes.

Ü The comparative assessment of CRZ approach and CAI approach highlightedthe advantages of CAI.

Ü CAI approach is developed and demonstrated using freely available remotesensing dataset which makes it economical as well for implementation.

Ü Most effective coastal management options can be proposed for differentclasses of coastal areas based on CAI.

Ü CAI based decisions will enhance the quality of decision making for coastalplanners, managers and researchers.

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Conclusion

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